Single/Triple, Low-Glitch, 250MHz, Current- Feedback Amplifiers with High-Speed Disable

Transcription

1 9-9; Rev ; / EVALUATION KIT AVAILABLE Single/Triple, Low-Glitch,, Current- General Description The MAX/MAX9/MAX9 are low-power, current-feedback video amplifiers featuring fast disable/enable times and low switching traients. The triple MAX and the single MAX9 are optimized for applicatio with closed-loop gai of +V/V () or greater and provide a - bandwidth of and, respectively. The triple MAX9 is optimized for closed-loop applicatio with gai of +V/V () or greater and provides a - bandwidth. These amplifiers feature. gain flatness up to with differential gain and phase errors of.% and.. These features make the MAX family ideal for video applicatio. The MAX/MAX9/MAX9 operate from a +V single supply or from ±.V to ±.V dual supplies. These amplifiers coume only.ma per amplifier and are capable of delivering ±ma of output current, making them ideal for portable and battery-powered equipment. The MAX/MAX9/MAX9 have a high-speed disable/enable mode that isolates the inputs, places the outputs in a high-impedance state, and reduces the supply current to µa per amplifier. Each amplifier can be disabled independently. High off isolation, low switching traient, and fast enable/disable times (/) allow these amplifiers to be used in a wide range of multiplexer applicatio. A settling time of to.%, a slew rate of up to V/µs, and low distortion make these devices useful in many generalpurpose, high-speed applicatio. The MAX/MAX9 are available in a tiny -pin QSOP package, and the MAX9 is available in a space-saving -pin µmax package. Applicatio High-Definition Surveillance Video High-Speed Switching/Multiplexing Portable/Battery-Powered Video/Multimedia Systems High-Speed Analog-to-Digital Buffers Medical Imaging High-Speed Signal Processing Professional Cameras CCD Imaging Systems RGB Distribution Amplifiers Pin Configuration appears at end of data sheet. µmax is a registered trademark of Maxim Integrated Products, Inc. Features Low Supply Current:.mA per Amplifier Fast Enable/Disable Times: / Very Low Switching Traient: mv p-p High Speed - Small-Signal Bandwidth (MAX, A VCL +) - Small-Signal Bandwidth (MAX9, A VCL +) - Small-Signal Bandwidth (MAX9, A VCL +) High Slew Rate V/µs (MAX, A VCL +) V/µs (MAX9, A VCL +) Excellent Video Specificatio -. Gain Flatness (MAX9) -. Gain Flatness (MAX9) Differential Gain/Phase Errors.%/. (MAX) Low-Power Disable Mode Inputs Isolated, Outputs Placed in High-Z Supply Current Reduced to µa per Amplifier Fast Settling Time of to.% Low Distortion SFDR (f c =, V O = V p-p, MAX) Available in Space-Saving Packages -Pin QSOP (MAX/MAX9) -Pin µmax (MAX9) Ordering Information MAXEEE+ - C to + C QSOP E- Ordering Information continued at end of data sheet. +Denotes lead-free package. PART PART MAX MAX9 MAX9 OPTIMIZED FOR: A V +V/V A V +V/V A V +V/V TEMP RANGE AMPLIFIERS PER PKG. PIN- PACKAGE PKG CODE MAXESD+ - C to + C SO S- Selector Guide PIN-PACKAGE -pin SO, -pin QSOP -pin SO, -pin QSOP -pin µmax/so MAX/MAX9/MAX9 Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at --9-, or visit Maxim s website at

2 Single/Triple, Low-Glitch,, Current- MAX/MAX9/MAX9 ABSOLUTE MAXIMUM RATINGS Supply Voltage (V CC to V EE )...+V IN_+, IN_-, DISABLE_ Voltage...(V EE -.V) to (V CC +.V) Differential Input Voltage (IN_+ to IN_-)...±.V Maximum Current into IN_+ or IN_-...±mA Output Short-Circuit Current Duration...Continuous Continuous Power Dissipation (T A = + C) -Pin SO (derate.mw/ C above + C)...mW -Pin µmax (derate.mw/ C above + C)...mW Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditio beyond those indicated in the operational sectio of the specificatio is not implied. Exposure to absolute maximum rating conditio for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS Dual Supplies -Pin SO (derate.mw/ C above + C)...mW -Pin QSOP (derate.mw/ C above + C)...mW Operating Temperature Range...- C to + C Storage Temperature Range...- C to + C Lead Temperature (soldering, s)...+ C (V CC = +V; V EE = -V; IN+ = V; DISABLE_.V; MAX: A V = +V/V, R F = R G = 9Ω for and R F = R G = Ω for ; MAX9: A V = +V/V, R F = Ω for and R F = Ω for ; MAX9: A V = +V/V, R F = R G = Ω for, R F = R G = Ω for ; T A = T MIN to T MAX, unless otherwise noted. Typical values are specified at T A = + C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Supply Voltage Inferred from PSRR tests ±. ±. V Input Voltage Range V CM Guaranteed by CMRR test ±. ±. V Input Offset Voltage V OS V CM = V (Note ) ± ± mv Input Offset Voltage Tempco TC VOS ± µv/ C Input Offset Voltage Matching Input Bias Current (Positive Input) I B+ ± ± µa Input Bias Current (Negative Input) I B- ± ± µa Input Resistance (Positive Input) R IN+ -.V V CM.V, V IN + - V IN - V kω Input Resistance (Negative Input) R IN- Ω Input Capacitance (Positive Input) C IN. pf Common-Mode Rejection Ratio CMRR -.V V CM.V Open-Loop Traresistance T R -.V V.V, -.V V.V, Output-Voltage Swing V SW Output Current I Ω ± ± ma Output Short-Circuit Current I SC ± ma Output Resistance R. Ω Disabled Output Leakage Current I (OFF) DISABLE_ V IL, V ±.V (Note ) ±. ± µa Disabled Output Capacitance C (OFF) DISABLE_ V IL, V ±.V pf DISABLE Low Threshold V IL (Note ) V CC - V DISABLE High Threshold V IH (Note ) V CC -. V ±. ±. ±. ±. ±. DISABLE Input Current I IN V EE DISABLE_ V CC. µa Power-Supply Rejection Ratio (V CC ) PSRR+ V EE = -V, V CC =.V to.v Power-Supply Rejection Ratio (V EE ) PSRR- V CC = V, V EE = -.V to -.V Quiescent Supply Current (per Amplifier) I S open.. ma Disabled Supply Current (per Amplifier) I S(OFF) DISABLE_ V IL, open.. ma mv MΩ V

3 Single/Triple, Low-Glitch,, Current- DC ELECTRICAL CHARACTERISTICS Single Supply (V CC = +V; V EE = V; IN+ =.V; DISABLE_.V; R L to V CC / ; MAX: A V = +V/V, R F = R G =.kω for and R F = R G = Ω for ; MAX9: A V = +V/V, R F = Ω for and R F = Ω for ; MAX9: A V = +V/V, R F = R G = Ω for, R F = R G = Ω for ; T A = T MIN to T MAX, unless otherwise noted. Typical values are specified at T A = + C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Supply Voltage Inferred from PSRR tests.. V Input Voltage Range V CM Guaranteed by CMRR test. to. to.. V Input Offset Voltage V OS V CM =.V (Note ) ±. ±. mv Input Offset Voltage Tempco TC VOS ± µv/ C Input Offset Voltage Matching ± mv Input Bias Current (Positive Input) I B+ ± ± µa Input Bias Current (Negative Input) Input Resistance (Positive Input) Input Resistance (Negative Input) Input Capacitance (Positive Input) Common-Mode Rejection Ratio Open-Loop Traresistance Output-Voltage Swing Output Current Output Short-Circuit Current Output Resistance Disabled Output Leakage Current Disabled Output Capacitance DISABLE Low Threshold DISABLE High Threshold DISABLE Input Current Power-Supply Rejection Ratio (V CC ) I B- R IN+ R IN- C IN CMRR T R V SW I I SC R I (OFF) C (OFF) V IL V IH I IN PSRR+.V V CM.V, V IN+ -V IN- V.V V CM.V.V V.V,.V V.V, Ω DISABLE_ V IL,.V V.V (Note ) DISABLE_ V IL,.V V.V (Note ) (Note ) V DISABLE_ V CC V CC =.V to.v to.9 to... to. to.. ± ± V CC -. ± ± ±.. ± V CC -. µa kω Ω pf MΩ V ma ma Ω µa pf V V µa MAX/MAX9/MAX9 Quiescent Supply Current (per Amplifier) I S open.. ma Disabled Supply Current (per Amplifier) I S(OFF) DISABLE_ V IL, open.. ma

4 Single/Triple, Low-Glitch,, Current- MAX/MAX9/MAX9 AC ELECTRICAL CHARACTERISTICS Dual Supplies (MAX) (V CC = +V, V EE = -V, V IN = V, DISABLE_ V, A V = +V/V, R F = R G = 9Ω for or R F = R G = Ω for ; T A = + C, unless otherwise noted.) Small-Signal - Bandwidth Peaking Bandwidth for. Flatness Large-Signal - Bandwidth Slew Rate Rise/Fall Time PARAMETER Settling Time to.% Spurious-Free Dynamic Range Second Harmonic Distortion Third Harmonic Distortion Differential Phase Error Differential Gain Error Input Noise-Voltage Deity Input Noise-Current Deity Output Impedance Crosstalk All Hostile Off-Isolation Gain Matching to. Amplifier Enable Time SYMBOL CONDITIONS MIN TYP MAX BW -.. BW. BW LS SR t S SFDR DP DG e n i n Z t ON V = V P-P V = V step, V = V step V = V step f C =, V = V P-P f C =, V = V P-P f C =, V = V P-P NTSC NTSC f = khz f = khz f = f =, input referred f =, input referred Positive slew Negative slew Rise time Fall time Positive input Negative input Delay from DISABLE to 9% of V, V IN =.V UNITS V/µs V/µs c c degrees % nv/ Hz pa/ Hz Ω Amplifier Disable Time t OFF Delay from DISABLE to % of V, V IN =.V Disable/Enable Switching Traient Positive traient Negative traient mv

5 Single/Triple, Low-Glitch,, Current- AC ELECTRICAL CHARACTERISTICS Dual Supplies (MAX9) (V CC = +V, V EE = -V, V IN = V, DISABLE_ V, A V = +V/V, R F = Ω for and R F = Ω for ; T A = + C, unless otherwise noted.) Small-Signal - Bandwidth Peaking Bandwidth for. Flatness Large-Signal - Bandwidth Slew Rate Settling Time to.% Rise/Fall Time PARAMETER Spurious-Free Dynamic Range Second Harmonic Distortion Third Harmonic Distortion Differential Phase Error Differential Gain Error Input Noise-Voltage Deity Input Noise-Current Deity Output Impedance Crosstalk All Hostile Off-Isolation Gain Matching to. Amplifier Enable Time SYMBOL CONDITIONS MIN TYP MAX BW -.. BW. BW LS V = V P-P SR V = V step, Positive slew Negative slew t S V = V step V = V step Rise time Fall time SFDR f C =, V = V P-P f C =, - V = V P-P - f C =, - V = V P-P - DP NTSC.. DG NTSC.. e n f = khz i n f = khz Positive input Negative input Z t ON f = f =, input referred f =, input referred Delay from DISABLE to 9% of V, V IN =.V - - UNITS V/µs V/µs c c degrees % nv/ Hz pa/ Hz Ω MAX/MAX9/MAX9 Amplifier Disable Time t OFF Delay from DISABLE to % of V, V IN =.V Disable/Enable Switching Traient Positive traient Negative traient mv

6 Single/Triple, Low-Glitch,, Current- MAX/MAX9/MAX9 AC & DYNAMIC PERFORMANCE Dual Supplies (MAX9) (V CC = +V, V EE = -V, V IN = V, A V = +V/V; R F = R G = Ω for and R F = R G = Ω for, T A = + C, unless otherwise noted.) Small-Signal - Bandwidth Peaking Slew Rate Rise/Fall Time PARAMETER Bandwidth for. Flatness Large-Signal - Bandwidth Settling Time to.% Spurious-Free Dynamic Range Second Harmonic Distortion Third Harmonic Distortion Differential Gain Error Differential Phase Error Input Noise-Current Deity Input Noise-Voltage Deity Output Impedance All Hostile Off-Isolation Turn-On Time from DISABLE Turn-Off Time from DISABLE Disable/Enable Switching Traient SYMBOL BW SS BW LS BW LS SR t S t R t F DG DP e n Z t ON t OFF BW LS kω V O = V P-P V O = V step, V O = V step V O = V step, f C =, V O = V P-P f C =, V O = V P-P f C =, V O = V P-P NTSC NTSC f = khz f = khz f = CONDITIONS f =, input referred Positive slew Negative slew Rise time Fall time MIN TYP MAX Positive traient Negative traient Positive input Negative input.. - UNITS V/µs c c degrees degrees pa/ Hz nv/ Hz Ω mv

7 Single/Triple, Low-Glitch,, Current- AC ELECTRICAL CHARACTERISTICS Single Supply (MAX) (V CC = +V, V EE = V, V IN =.V, DISABLE_ V, R L to V CC /, A V = +V/V, R F = R G =.kω for to V CC / and R F = R G = Ω for ; T A = + C, unless otherwise noted.) Small-Signal - Bandwidth Peaking Bandwidth for. Flatness Large-Signal - Bandwidth Slew Rate Settling Time to.% Rise/Fall Time PARAMETER Spurious-Free Dynamic Range Second Harmonic Distortion Third Harmonic Distortion Differential Phase Error Differential Gain Error Input Noise-Voltage Deity Input Noise-Current Deity Output Impedance Crosstalk All Hostile Off Isolation Gain Matching to. Amplifier Enable Time SYMBOL CONDITIONS MIN TYP MAX BW -.. BW. BW LS V = V P-P SR V = V step, Positive slew Negative slew t S V = V step V = V step Rise time Fall time 9 SFDR f C =, V = V P-P f C =, - V = V P-P -9 f C =, - V = V P-P - DP NTSC.. DG NTSC.. e n f = khz i n f = khz Positive input Negative input Z t ON f = f =, input referred f =, input referred Delay from DISABLE to 9% of V, V IN = V - - UNITS V/µs V/µs c c degrees % nv/ Hz pa/ Hz Ω MAX/MAX9/MAX9 Amplifier Disable Time t OFF Delay from DISABLE to % of V, V IN = V Disable/Enable Switching Traient Positive traient Negative traient mv

8 Single/Triple, Low-Glitch,, Current- MAX/MAX9/MAX9 AC ELECTRICAL CHARACTERISTICS Single Supply (MAX9) (V CC = +V, V EE = V, V IN =.V, DISABLE_ V, R L to V CC /, A V = +V/V, R F = Ω for and R F = Ω for ; T A = + C, unless otherwise noted.) Small-Signal - Bandwidth Peaking Bandwidth for. Flatness Large-Signal - Bandwidth Slew Rate Settling Time to.% Rise/Fall Time PARAMETER Spurious-Free Dynamic Range Second Harmonic Distortion Third Harmonic Distortion Differential Phase Error Differential Gain Error Input Noise-Voltage Deity Input Noise-Current Deity Output Impedance Crosstalk All Hostile Off-Isolation Gain Matching to. Amplifier Enable Time SYMBOL CONDITIONS MIN TYP MAX BW BW. BW LS V = V P-P SR V = V step, Positive slew Negative slew t S V = V step V = V step Rise time Fall time SFDR f C =, V = V P-P f C =, - V = V P-P - f C =, - V = V P-P - DP NTSC.. DG NTSC.. e n f = khz i n f = khz Positive input Negative input Z t ON f = f =, input referred f =, input referred Delay from DISABLE to 9% of V, V IN = V - - UNITS V/µs c c degrees % nv/ Hz pa/ Hz Ω Amplifier Disable Time t OFF Delay from DISABLE to % of V, V IN = V Disable/Enable Switching Traient Positive traient Negative traient mv Note : Input Offset Voltage does not include the effect of I BIAS flowing through R F /R G. Note : Does not include current through external feedback network. Note : Over operating supply-voltage range.

9 Single/Triple, Low-Glitch,, Current- AC & DYNAMIC PERFORMANCE Single Supply (MAX9) (V CC = +V, V EE = V, V IN = V, A V = +V/V; R F = R G = Ω for and R F = R G = Ω for, T A = + C, unless otherwise noted) Small-Signal - Bandwidth Peaking Slew Rate Rise/Fall Time PARAMETER Bandwidth for. Flatness Large-Signal - Bandwidth Settling Time to.% Spurious-Free Dynamic Range Second Harmonic Distortion Third Harmonic Distortion Differential Gain Error Differential Phase Error Input Noise-Voltage Deity Input Noise-Current Deity Output Impedance All Hostile Off-Isolation Turn-On Time from DISABLE Turn-Off Time from DISABLE Disable/Enable Switching Traient SYMBOL BW - BW. BW LS SR t S t R t F DG DP i n Z t ON t OFF BW LS V O = V P-P V O = V step, V O = V step V O = V step, f C =, V O = V P-P f C =, V O = V P-P f C =, V O = V P-P NTSC NTSC f = khz f = khz f = CONDITIONS Positive slew Negative slew Rise time Fall time f =, input referred, MIN TYP MAX Positive traient Negative traient Positive input Negative input.. - UNITS V/µs c c % degrees nv/ Hz pa/ Hz Ω mv MAX/MAX9/MAX9 9

10 Single/Triple, Low-Glitch,, Current- MAX/MAX9/MAX9 Typical Operating Characteristics (V CC = +V, V EE = -V, T A = + C, unless otherwise noted.) GAIN () GAIN () MAX SMALL-SIGNAL GAIN vs. FREQUENCY (DUAL SUPPLIES) V IN = mv P-P A V = +V/V R F = R G = Ω R F = R G = 9Ω Ω R F = R G = 9kΩ MAX9 SMALL-SIGNAL GAIN vs. FREQUENCY (DUAL SUPPLIES) R F = Ω Ω V IN = mv P-P A V = +V/V R F =.kω R F =.kω MAXtoc MAXtoc GAIN () GAIN () MAX SMALL-SIGNAL GAIN vs. FREQUENCY (SINGLE SUPPLY) V EE = V V IN = mv P-P A V = +V/V R F = R G = Ω Ω R F = R G = Ω R F = R G =.kω MAX9 SMALL-SIGNAL GAIN vs. FREQUENCY (SINGLE SUPPLY) V EE = V IN = mv P-P A V = +V/V R F =.kω R F = 9Ω Ω R F =.kω MAXtoc MAXtoc GAIN () GAIN () MAX GAIN FLATNESS vs. FREQUENCY (DUAL SUPPLIES) R F = R G = Ω R F = R G = 9Ω Ω V IN = mvp-p A V = +V/V R F = R G = 9Ω MAX9 GAIN FLATNESS vs. FREQUENCY (DUAL SUPPLIES) R F =.kω R F = Ω Ω V IN = mv P-P A V = +V/V MAXtoc MAXtoc GAIN () 9 MAX LARGE-SIGNAL GAIN vs. FREQUENCY (DUAL SUPPLIES) R F = R G = 9Ω V IN = V P-P A V = +V/V R F = R G = Ω MAXtoc GAIN () 9 MAX LARGE-SIGNAL GAIN vs. FREQUENCY (SINGLE SUPPLY) R F = R G =.kω V EE = V IN = V P-P A V = +V/V R F = R G = Ω MAXtoc GAIN MATCHING () MAX SMALL-SIGNAL GAIN MATCHING vs. FREQUENCY V IN = mv P-P R F = R G = Ω A V = +V/V CH-CH CH-CH CH-CH MAXtoc9 -.

11 Single/Triple, Low-Glitch,, Current- Typical Operating Characteristics (continued) (V CC = +V, V EE = -V, T A = + C, unless otherwise noted.) GAIN () DISTORTION (c) MAX9 LARGE-SIGNAL GAIN vs. FREQUENCY (DUAL SUPPLIES) R F =.kω V IN = V P-P A V = V/V R F =.kω MAX HARMONIC DISTORTION vs. FREQUENCY (DUAL SUPPLIES) V = V P-P ND () RD () ND (). RD () MAXtoc MAXtoc GAIN () DISTORTION (c) MAX9 LARGE-SIGNAL GAIN vs. FREQUENCY (SINGLE SUPPLY) R F =.kω V EE = V IN = V P-P A V = +V/V R F =.kω MAX HARMONIC DISTORTION vs. FREQUENCY (SINGLE SUPPLY) V = V P-P ND () RD () RD (). ND () MAXtoc MAXtoc GAIN () CROSSTALK (c) MAX9 SMALL-SIGNAL GAIN MATCHING vs. FREQUENCY V IN = V P-P R F =.kω A V = +V/V CH_ CH_ CH_ CH_ CH_ CH_ MAX CROSSTALK vs. FREQUENCY (DUAL SUPPLIES) V = V P-P MAXtoc MAXtoc MAX/MAX9/MAX9 DISTORTION (c) MAX9 HARMONIC DISTORTION vs. FREQUENCY (DUAL SUPPLIES) V = V P-P ND () RD () RD (). ND () MAXtoc DISTORTION (c) MAX9 HARMONIC DISTORTION vs. FREQUENCY (SINGLE SUPPLY) V = V P-P ND () RD () RD (). ND () MAXtoc CROSSTALK (c) MAX9 CROSSTALK vs. FREQUENCY (DUAL SUPPLIES) V = V P-P MAXtoc

12 Single/Triple, Low-Glitch,, Current- MAX/MAX9/MAX9 Typical Operating Characteristics (continued) (V CC = +V, V EE = -V, T A = + C, unless otherwise noted.) VOLTAGE-NOISE DENSITY (nv/ Hz) PSRR () INPUT VOLTAGE-NOISE DENSITY vs. FREQUENCY k k k M M M G FREQUENCY (Hz) POWER-SUPPLY REJECTION RATIO vs. FREQUENCY V CC (MAX9) V CC (MAX) V EE (MAX). V EE (MAX9) MAX TOC9 MAXtoc PUT IMPEDANCE (Ω) TOTAL VOLTAGE-NOISE DENSITY (nv/ Hz) k. TOTAL VOLTAGE-NOISE DENSITY vs. FREQUENCY (INPUT REFERRED) V IN MAX 9kΩ 9kΩ V k k k M M M G FREQUENCY (Hz) PUT IMPEDANCE vs. FREQUENCY (DUAL SUPPLIES), A V = +V/V, R F = R G = 9Ω FOR MAX; A V = + V/V, R F =.kω FOR MAX9 MAX9 MAX. MAXtoc MAX- - BANDWIDTH () SUPPLY CURRENT PER AMPLIFIER (ma) - BANDWIDTH vs. INPUT AMPLITUDE MAX9 MAX DUAL SUPPLIES:, A V = +V/V, R F = R G = 9Ω FOR MAX; A V = +V/V, R F =.kω FOR MAX9.. INPUT AMPLITUDE (Vp-p)..... SUPPLY CURRENT PER AMPLIFIER vs. TEMPERATURE V CC = V; V EE = -V V CC = V; V EE = - - TEMPERATURE ( C) MAXtoc MAXtoc VOS (mv) INPUT OFFSET VOLTAGE (V OS ) vs. TEMPERATURE - - TEMPERATURE ( C) MAXtoc INPUT BIAS CURRENT (µa) INPUT BIAS CURRENT vs. TEMPERATURE I B - (POSITIVE INPUT) I B - (NEGATIVE INPUT) - - TEMPERATURE ( C) MAXtoc DISABLED SUPPLY CURRENT PER AMPLIFIER (ma).... DISABLED SUPPLY CURRENT PER AMPLIFIER vs. TEMPERATURE V CC = ±V V CC = ±.V - - TEMPERATURE ( C) MAXtoc

13 Single/Triple, Low-Glitch,, Current- Typical Operating Characteristics (continued) (V CC = +V, V EE = -V, T A = + C, unless otherwise noted.) (VCC-VOH) AND (VOL-VEE) (mv) PUT VOLTAGE SWING vs. TEMPERATURE V CC - V OH ; V OL - V EE ; V CC - V OH ; V OL - V EE ; - - TEMPERATURE ( C) MAX SMALL-SIGNAL PULSE RESPONSE MAXtoc V DISABLE V V V MAX ENABLE/DISABLE RESPONSE /div A V = +V/V, R F = R G = 9Ω,, V IN = V MAX SMALL-SIGNAL PULSE RESPONSE (WITH C LOAD ) MAXtoc9 V V CC V V V/div V MAX9 POWER-ON RESPONSE /div A V = +V/V,, R F =.kω, V EE = MAX LARGE-SIGNAL PULSE RESPONSE MAXtoc MAX/MAX9/MAX9 +mv MAXtoc +mv MAXtoc +V MAXtoc IN IN IN -mv -mv -V +mv +mv +V -mv -mv -V /div A V = +V/V, R F = R G = 9Ω, /div A V = +V/V, R F = R G = 9Ω,, C L = pf /div A V = +V/V, R F = R G = 9Ω,

14 Single/Triple, Low-Glitch,, Current- MAX/MAX9/MAX9 Typical Operating Characteristics (continued) (V CC = +V, V EE = -V, T A = + C, unless otherwise noted.) +mv IN -mv +mv -mv V DISABLE V V mv/div MAX9 SMALL-SIGNAL PULSE RESPONSE /div A V = +V/V, R F =.kω, MAX SWITCHING TRANSIENT MAXtoc MAXtoc +mv IN -mv +mv -mv V DISABLE V mv/div MAX9 SMALL-SIGNAL PULSE RESPONSE (WITH C LOAD ) /div A V = +V/V, R F =.kω,, C L = pf MAX9 SWITCHING TRANSIENT MAXtoc MAXtoc OFF-CHANNEL FEEDTHROUGH () +V IN -V +V -V MAX9 LARGE-SIGNAL PULSE RESPONSE /div A V = +V/V, R F =.kω, OFF-CHANNEL FEEDTHROUGH vs. FREQUENCY (DUAL SUPPLIES) MAXtoc MAXtoc9 /div A V = +V/V, R F = 9Ω,, V IN = /div A V = +V/V, R F =.kω,, V IN = -9

15 Single/Triple, Low-Glitch,, Current- PIN MAX/MAX9 SO QSOP, 9 9 MAX9 NAME SO/µMAX DISABLE DISABLE DISABLE V CC IN+ IN-, N.C. IN- IN+ V EE IN+ IN- Amplifier Noninverting Input Amplifier Inverting Input FUNCTION Pin Descriptio Disable Control Input for Amplifier. Amplifier is enabled when DISABLE (V CC - V) and disabled when DISABLE (V CC - V). Disable Control Input for Amplifier. Amplifier is enabled when DISABLE (V CC - V) and disabled when DISABLE (V CC - V). Disable Control Input for Amplifier. Amplifier is enabled when DISABLE (V CC - V) and disabled when DISABLE (V CC - V). Positive Power Supply. Connect V CC to +V. Amplifier Noninverting Input Amplifier Inverting Input Amplifier Output No Connection. Not internally connected. Amplifier Output Amplifier Inverting Input Amplifier Noninverting Input Negative Power Supply. Connect V EE to -V or to ground for single-supply operation. MAX/MAX9/MAX9 Amplifier Output IN- Amplifier Inverting Input IN+ Amplifier Noninverting Input Amplifier Output DISABLE Disable Control Input. Amplifier is enabled when DISABLE (V CC - V) and disabled when DISABLE (V CC - V). Detailed Description The MAX/MAX9/MAX9 are very low-power, current-feedback amplifiers featuring bandwidths up to,. gain flatness to, and low differential gain (.%) and phase (. ) errors. These amplifiers achieve very high bandwidth-to-power ratios while maintaining low distortion, wide signal swing, and excellent load-driving capabilities. They are optimized for ±V supplies but are also fully specified for single +V operation. Couming only.ma per amplifier, these devices have ±ma output current drive capability and achieve low distortion even while driving Ω loads. Wide bandwidth, low power, low differential phase/gain error, and excellent gain flatness make the MAX family ideal for use in portable video equipment such as video cameras, video switchers, and other batterypowered equipment. Their two-stage design provides higher gain and lower distortion than conventional single-stage, current-feedback amplifiers. This feature, combined with a fast settling time, makes these devices suitable for buffering high-speed analog-to-digital converters. The MAX/MAX9/MAX9 have a high-speed, low-power disable mode that is activated by driving the amplifiers DISABLE input low. In the disable mode, the

16 Single/Triple, Low-Glitch,, Current- MAX/MAX9/MAX9 amplifiers achieve very high isolation from input to output ( at ), and the outputs are placed into a highimpedance state. These amplifiers achieve low switching-traient glitches (<mvp-p) when switching between enable and disable modes. Fast enable/disable times (/), along with high off-isolation and low switching traients, allow these devices to be used as high-performance, high-speed multiplexers. This is achieved by connecting the outputs of multiple amplifiers together and controlling the DISABLE inputs to enable one amplifier and disable all others. The disabled amplifiers present a very light load (µa leakage current and.pf capacitance) to the active amplifier s output. The feedback network impedance of all the disabled amplifiers must still be coidered when calculating the total load on the active amplifier output. Figure shows an application circuit using the MAX as a : video multiplexer. The DISABLE_ logic threshold is typically VCC -.V, independent of VEE. For a single +V supply or dual ±V supplies, the disable inputs are CMOS-logic compatible. The amplifiers default to the enabled mode if the DISABLE pin is left unconnected. If the DISABLE pin is left floating, take proper care to eure that no high-frequency signals are coupled to this pin, as this may cause false triggering. Applicatio Information.µF Ω V IN Ω Ω V IN Ω Ω V IN Ω +V -V.µF.µF AMP MAX AMP 9 AMP.µF Ω Ω Ω Ω Ω Ω Ω CABLE Ω V Theory of Operation The MAX/MAX9/MAX9 are current-feedback amplifiers, and their open-loop trafer function is expressed as a traimpedance, V / I IN, or T Z. The frequency behavior of the open-loop traimpedance is similar to the open-loop gain of a voltage-mode feedback amplifier. That is, it has a large DC value and decreases at approximately per octave. Analyzing the follower with gain, as shown in Figure, yields the following trafer function: DISABLE DISABLE DISABLE Figure. High-Speed : Video Multiplexer R G R F V / V IN = G x [(T Z (S) / T Z (s) + G x (R IN + R F )] where G = A VCL = + (R F / R G ), and R IN = /g M Ω. At low gai, G x R IN < R F. Therefore, the closed-loop bandwidth is essentially independent of closed-loop gain. Similarly T Z > R F at low frequencies, so that: V VIN = G = + ( RF / RG) V IN R IN + T Z + MAX MAX9 MAX9 V Figure. Current-Feedback Amplifier

17 Single/Triple, Low-Glitch,, Current- Layout and Power-Supply Bypassing As with all wideband amplifiers, a carefully laid out PCB and adequate power-supply bypassing are essential to realizing the optimum AC performance of MAX/ MAX9/MAX9. The PC board should have at least two layers. Signal and power should be on one layer. A large low-impedance ground plane, as free of voids as possible, should be the other layer. With multilayer boards, locate the ground plane on a layer that incorporates no signal or power traces. Do not use wire-wrap boards or breadboards and sockets. Wire-wrap boards are too inductive. Breadboards and sockets are too capacitive. Surfacemount components have lower parasitic inductance and capacitance, and are therefore preferable to through-hole components. Keep lines as short as possible to minimize parasitic inductance, and avoid 9 tur. Round all corners. Terminate all unused amplifier inputs to ground with a Ω or Ω resistor. The MAX/MAX9/MAX9 achieve a high degree of off-isolation ( at ) and low crosstalk (- at ). The input and output signal traces must be kept from overlapping to achieve high off-isolation. Coupling between the signal traces of different channels will degrade crosstalk. The signal traces of each channel should be kept from overlapping with the signal traces of the other channels. Adequate bypass capacitance at each supply is very important to optimize the high-frequency performance of these amplifiers. Inadequate bypassing will also degrade crosstalk rejection, especially with heavier loads. Use a µf capacitor in parallel with a.µf to.µf capacitor between each supply pin and ground to achieve optimum performance. The bypass capacitors should be located as close to the device as possible. A µf low-esr tantalum capacitor may be required to produce the best settling time and lowest distortion when large traient currents must be delivered to a load. Choosing Feedback and Gain Resistors The optimum value of the external-feedback (R F ) and gain-setting (R G ) resistors used with the MAX/ MAX9/MAX9 depends on the closed-loop gain and the application circuit s load. Table lists the optimum resistor values for some specific gain configuratio. One-percent resistor values are preferred to maintain coistency over a wide range of production lots. Figures a and b show the standard inverting and noninverting configuratio. Note that the noninverting circuit gain (Figure b) is plus the magnitude of the inverting closed-loop gain. Otherwise, the two circuits are identical. MAX/MAX9/MAX9 V IN RS R G R F R G R F R T R O V V IN R S R O V MAX MAX9 MAX9 R T MAX MAX9 MAX9 V = -(R F / R G ) (V IN ) V = [+ (R F / R G )] V IN Figure a. Inverting Gain Configuration Figure b. Noninverting Gain Configuration

18 Single/Triple, Low-Glitch,, Current- MAX/MAX9/MAX9 Table a. MAX Recommended Component Values COMPONENT/ BW COMPONENT/ BW R F (Ω) R G (Ω) - BW () Table b. MAX9 Recommended Component Values COMPONENT/ BW R G (Ω) - BW () Table c. MAX9 Recommended Component Values COMPONENT/ BW COMPONENT/ BW R F (Ω) R G (Ω) - BW () kω 9 9.k kω.k.k A V = +V/V Ω A V = +V/V Ω DUAL SUPPLIES Ω 9 9 A V = + (V/V) kω DUAL SUPPLIES A V = +V/V.k DUAL SUPPLIES Ω A V = + (V/V) kω A V = + (V/V) kω Ω A V = + (V/V) kω kω.k.k kω.k.k A V = +V/V.k Ω Ω A V = +V/V Ω SINGLE SUPPLY SINGLE SUPPLY SINGLE SUPPLY Ω A V = +V/V.k 9 A V = + V/V kω A V = + V/V kω A V = + V/V kω Ω 9 A V = + V/V kω DC and Noise Errors Several major error sources must be coidered in any op amp. These apply equally to the MAX/ MAX9/MAX9. Offset-error terms are given by the equation below. Voltage and current-noise errors are root-square summed and are therefore computed separately. In Figure, the total output offset voltage is determined by the following factors: The input offset voltage (V OS ) times the closed-loop gain ( = R F / R G ). The positive input bias current (I B+ ) times the source resistor (R S ) (usually Ω or Ω), plus the negative input bias current (I B- ) times the parallel combination of R G and R F. In current-feedback amplifiers, the input bias currents at the IN+ and INterminals do not track each other and may have opposite polarity, so there is no benefit to matching the resistance at both inputs. The equation for the total DC error at the output is: [ ] + V I R I R R V R F = ( B+ ) S + ( B )( F G) + OS R G R G R S I B - I B + Figure. Output Offset Voltage R F MAX MAX9 MAX9 V

19 Single/Triple, Low-Glitch,, Current- The total output-referred noise voltage is: R e F n( ) = + R G The MAX/MAX9/MAX9 have a very low, nv/ Hz noise voltage. The current noise at the positive input (i n+ ) is pa/ Hz, and the current noise at the inverting input is pa/ Hz. An example of the DC error calculatio, using the MAX typical data and typical operating circuit where R F = R G = kω (R F R G =Ω), and R S =.Ω, gives the following: x x x V = +. x +. x V =.mv Calculating the total output noise in a similar manner yields: ( ) en( ) = + [( ) ] + ( ) x [ ] + ( ) in+ RS in RF RG en ( + ) x x. + x x + 9 x With a system bandwidth, this calculates to µvrms (approximately µvp-p, choosing the sixsigma value). Video Line Driver The MAX/MAX9/MAX9 are well suited to drive coaxial tramission lines when the cable is terminated at both ends (Figure ). Cable frequency respoe can cause variatio in the signal s flatness. See Table for optimum RF and RG values. Driving Capacitive Loads The MAX/MAX9/MAX9 are optimized for AC performance. Reactive loads decrease phase margin and may produce excessive ringing and oscillation. Unlike most high-speed amplifiers, the MAX/ MAX9/MAX9 are tolerant of capacitive loads up to pf. Capacitive loads greater than pf may cause ringing and oscillation. Figure a shows a circuit that eliminates this problem. Placing the small (usually Ω to Ω) isolation resistor, R S, before the reactive load prevents ringing and oscillation. At higher capacitive loads, the interaction of the load capacitance and isolation resistor controls AC performance. Figures b and c show the MAX and MAX9 frequency respoe with a pf capacitive load. Note that in each case, gain peaking is substantially reduced when the Ω resistor is used to isolate the capacitive load from the amplifier output. MAX/MAX9/MAX9 en( ) =. nv / Hz R G Ω R F Ω +V.µF R G RF MAX MAX9 MAX9 VIDEO IN Ω CABLE Ω.µF MAX Ω Ω CABLE Ω VIDEO V IN R S C L R L -V Figure. Video Line Driver Application Figure a. Using an Isolation Resistor (R S ) for High Capacitive Loads 9

20 Single/Triple, Low-Glitch,, Current- MAX/MAX9/MAX9 GAIN () MAX/MAX9 A V = +V/V R F = R G = 9Ω k pf V IN = mv P-P MAX/9 TRANSISTOR COUNT: MAX9 TRANSISTOR COUNT: SUBSTRATE CONNECTED TO V EE R S = Ω R S = Ω R S = Ω Figure b. Normalized Frequency Respoe with pf Capacitive Load Chip Information GAIN () MAX9 A V = +V/V R F =.k k pf V IN = mv P-P R S = Ω R S = Ω R S = Ω Figure c. Normalized Frequency Respoe with pf Capacitive Load Ordering Information (continued) PART TEMP RANGE PIN- PACKAGE PKG CODE MAX9ESD+ - C to + C SO S- MAX9EEE+ - C to + C QSOP E- MAX9ESA+ - C to + C SO S- MAX9EUA+T - C to + C µmax- U- +Denotes lead-free package. Pin Configuratio TOP VIEW DISABLE DISABLE DISABLE IN- MAX9 DISABLE V CC N.C. DISABLE DISABLE V CC IN+ MAX MAX9 N.C. IN- IN+ V EE IN- IN+ V EE IN+ IN+ VEE IN+ IN- DISABLE V CC IN+ IN- MAX MAX9 SO/µMAX IN- IN- 9 N.C. 9 N.C. SO QSOP

21 Single/Triple, Low-Glitch,, Current- Package Information (The package drawing(s) in this data sheet may not reflect the most current specificatio. For the latest package outline information go to N TOP VIEW D e B A FRONT VIEW E A H C L SIDE VIEW - INCHES MILLIMETERS DIM MIN MAX MIN MAX A..9.. A.... B C...9. e. BSC. BSC E.... H.... L.... VARIATIONS: DIM D D D INCHES MILLIMETERS MIN MAX MIN MAX N MS AA.... AB AC SOICN.EPS MAX/MAX9/MAX9 PROPRIETARY INFORMATION TITLE: PACKAGE LINE,." SOIC APPROVAL DOCUMENT CONTROL NO. REV. - B

22 Single/Triple, Low-Glitch,, Current- MAX/MAX9/MAX9 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specificatio. For the latest package outline information go to QSOP.EPS PACKAGE LINE, QSOP.",." LEAD PITCH - F

23 Single/Triple, Low-Glitch,, Current- Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specificatio. For the latest package outline information go to A e Ø.±. D TOP VIEW b E A H A c X S L BOTTOM VIEW α DIM A A INCHES MIN MAX BSC A. b c D e E. H. L. α S. BSC..9. MILLIMETERS MIN MAX BSC BSC LUMAXD.EPS MAX/MAX9/MAX9 FRONT VIEW SIDE VIEW PROPRIETARY INFORMATION TITLE: PACKAGE LINE, L umax/usop APPROVAL DOCUMENT CONTROL NO. REV. - J Revision History Pages changed at Rev :,, 9 Maxim cannot assume respoibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licees are implied. Maxim reserves the right to change the circuitry and specificatio without notice at any time. Maxim Integrated Products, San Gabriel Drive, Sunnyvale, CA 9 -- Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.