16 V, 4 MHz RR0 Amplifiers AD8665/AD8666/AD8668

Transcription

1 6 V, MHz RR Amplifiers AD8665/AD8666/AD8668 FEATURES Offset voltage:.5 mv max Low input bias current: pa max Single-supply operation: 5 V to 6 V Dual-supply operation: ±.5 V to ±8 V Low noise: 8 nv/ khz Wide bandwidth: MHz Rail-to-rail output Unity-gain stable Lead-free packaging AD8666/AD8668 qualified for automotive applications APPLICATIONS Sensor amplification Reference buffers Medical equipment Physiological measurements Signal filters and conditioning Consumer audio Photodiode amplification ADC driver Level shifting circuits GENERAL DESCRIPTION The AD866x family is single supply, rail-to-rail output amplifiers with low noise performance featuring an extended operating range with supply voltages up to 6 V. They also feature low input bias currents, wide signal bandwidth, and low input voltage and current noise. For lower offset voltage, choose the AD866/AD866/AD866 family. The combination of low offsets, very low input bias currents, and wide supply range make these amplifiers useful in a wide variety of cost sensitive applications normally associated with much higher priced JFET amplifiers. Systems using high impedance sensors, such as photo diodes, benefit from the combination of low input bias current, low noise, and low offset and bandwidth. The wide operating voltage range matches high performance ADCs and DACs. Audio applications and medical monitoring equipment can take advantage of the high input impedance, low voltage and current noise, wide bandwidth, and the lack of popcorn noise found in many other low input bias current amplifiers. The AD866x family is specified over the extended industrial temperature range ( C to +5 C). See the Ordering Guide for automotive models. PIN CONFIGURATIONS OUT V +IN 3 AD8665 TOP VIEW (Not to Scale) Figure. AD8665, 5-Lead SOT-3 (RJ-5) NC IN +IN 3 VEE AD8665 TOP VIEW (Not to Scale) NC = NO CONNECT Figure. AD8665, 8-Lead SOIC_N (R-8) OUT A IN A +IN A 3 V AD8666 TOP VIEW (Not to Scale) Figure 3. AD8666, 8-Lead SOIC_N (R-8) OUT A IN A +IN A 3 V AD8666 TOP VIEW (Not to Scale) Figure. AD8666, 8-Lead MSOP (RM-8) Figure 5. AD8668, -Lead TSSOP (RU-) Figure 6. AD8668, -Lead SOIC_N (R-) 5 V+ IN 8 NC 7 VCC 6 OUT 5 NC V+ 7 OUT B 6 IN B 5 +IN B 8 V+ 7 OUT B 6 IN B 5 +IN B OUT A OUT D IN A +IN A V+ +IN B IN B OUT B AD8668 TOP VIEW (Not to Scale) IN D +IN D V +IN C IN C OUT C OUT A IN A +IN A V+ +IN B IN B OUT B AD868 AD8668 TOP VIEW (Not to Scale) OUT D 3 IN D +IN D V +IN C 9 IN C 8 OUT C Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 96, Norwood, MA 6-96, U.S.A. Tel: Fax: Analog Devices, Inc. All rights reserved.

2 TABLE OF CONTENTS Features... Applications... General Description... Pin Configurations... Revision History... Specifications... 3 Absolute Maximum Ratings...5 Thermal Resistance...5 ESD Caution...5 Typical Performance Characteristics...6 Outline Dimensions... Ordering Guide... REVISION HISTORY 7/ Rev. A to Rev. B Change to Features and General Description Sections... Updated Outline Dimensions... Changes to Ordering Guide... 3 Added Automotive Products Section... 3 /6 Rev. to Rev. A Added AD Universal Added New Figure and Figure, Renumbered Sequentially... Changes to Table... 5 Changes to Figure 8, Figure 9, and Figure... 6 Change to Figure... Updated Outline Dimensions... Changes to Ordering Guide... 3 /6 Rev : Initial Version Rev. B Page of 6

3 SPECIFICATIONS VDD = 5. V, VCM = VDD/, TA = 5 o C, unless otherwise noted. Table. Parameter Symbol Conditions Min Typ Max Unit INPUT CHARACTERISTICS Offset Voltage VOS VCM =.5 V.7.5 mv VCM =. V to +3. V 3. mv C < TA < +5 C 5. mv Offset Voltage Drift ΔVOS/ΔT C < TA < +5 C 3. μv/ C Input Bias Current IB. pa C < TA < +5 C 55 pa Input Offset Current IOS..5 pa C < TA < +5 C 7 pa Input Voltage Range VCM. +3. V Common-Mode Rejection Ratio CMRR VCM =. V to +3. V 8 db C < TA < +5 C 79 db Large-Signal Voltage Gain AVO RL = kω, VO =.5 V to.5 V 68 5 V/mV OUTPUT CHARACTERISTICS Output Voltage High VOH IOUT = ma V C < TA < +5 C.86 V Output Voltage Low VOL IOUT = ma 5 85 mv C < TA < +5 C 5 mv Short-Circuit Output Current ISC ±9 ma Closed-Loop Output Impedance ZOUT At MHz, AV = 5 Ω POWER SUPPLY Power Supply Rejection Ratio PSRR VDD = 5. V to 6 V 98 5 db C < TA < +5 C 9 db Supply Current per Amplifier ISY.. ma C < TA < +5 C. ma DYNAMIC PERFORMANCE Slew Rate SR RL = kω 3.5 V/μs Gain Bandwidth Product GBP MHz Phase Margin ΦM 7 Degrees NOISE PERFORMANCE Peak-to-Peak Noise en p-p. Hz to Hz. μv p-p Voltage Noise Density en f = khz nv/ Hz f = khz 8 nv/ Hz Channel Separation CS f = khz 5 db Rev. B Page 3 of 6

4 VDD = 6 V, VCM = VDD/, TA = 5 o C, unless otherwise noted. Table. Parameter Symbol Conditions Min Typ Max Unit INPUT CHARACTERISTICS Offset Voltage VOS VCM = 8 V.6.5 mv VCM =. V to +. V 3. mv C < TA < +5 C 5. mv Offset Voltage Drift ΔVOS/ΔT C < TA < +5 C 3. μv/ C Input Bias Current IB. pa C < TA < +5 C 55 pa Input Offset Current IOS..5 pa C < TA < +5 C 7 pa Input Voltage Range VCM. +. V Common-Mode Rejection Ratio CMRR VCM =. V to +. V 9 db C < TA < +5 C 8 db Large-Signal Voltage Gain AVO RL = kω, VO =.5 V to 5.5 V 3 55 V/mV OUTPUT CHARACTERISTICS Output Voltage High VOH IOUT = ma V C < TA < +5 C 5.9 V Output Voltage Low VOL IOUT = ma mv C < TA < +5 C 5 mv Short-Circuit Output Current ISC ± ma Closed-Loop Output Impedance ZOUT At MHz, AV = 5 Ω POWER SUPPLY Power Supply Rejection Ratio PSRR VDD = 5. V to 6 V 98 5 db C < TA < +5 C 9 db Supply Current per Amplifier ISY.5.55 ma C < TA < +5 C. ma DYNAMIC PERFORMANCE Slew Rate SR RL = kω 3.5 V/μs Gain Bandwidth Product GBP MHz Phase Margin ΦM 73 Degrees NOISE PERFORMANCE Peak-to-Peak Noise en p-p. Hz to Hz.5 μv p-p Voltage Noise Density en f = khz nv/ Hz f = khz 8 nv/ Hz Channel Separation CS f = khz 5 db Rev. B Page of 6

5 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Rating Supply Voltage 8 V Input Voltage GND to VDD Differential Input Voltage ±8 V Output Short-Circuit to GND Indefinite Storage Temperature Range 65 C to +5 C Operating Temperature Range C to +5 C Lead Temperature (Soldering, 6 sec) 3 C Junction Temperature 5 C Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. THERMAL RESISTANCE Table. Thermal Resistance Package Type θja θjc Unit 5-Lead SOT-3 (RJ-5) 9 C/W 8-Lead SOIC_N (R-8) 58 3 C/W 8-Lead MSOP (RM-8) 5 C/W -Lead SOIC (R-) 36 C/W -Lead TSSOP (RU-) 8 35 C/W ESD CAUTION Rev. B Page 5 of 6

6 TYPICAL PERFORMANCE CHARACTERISTICS NUMBER OF AMPLIFIERS V DD = 6V 9 V CM = 8V 8 6 AMPLIFIERS INPUT BIAS CURRENT (pa) V S = 5V AND 6V 3 3 INPUT OFFSET VOLTAGE (mv) Figure 7. Input Offset Voltage Distribution TEMPERATURE ( C) Figure. Input Bias Current vs. Temperature NUMBER OF AMPLIFIERS V DD = 6V V CM = 8V C < T A < +5 C 3 AMPLIFIERS OUTPUT SATURATION VOLTAGE (mv) V DD = 6V V DD TO V OH SOURCING V OL SINKING TCV OS (µv/ C) Figure 8. VOS Drift (TCVOS) Distribution LOAD CURRENT (ma) Figure. Output Saturation Voltage vs. Load Current INPUT OFFSET VOLTAGE (mv) V DD = 6V OUTPUT SATURATION VOLTAGE (mv) 8 6 V DD = 6V I OUT = ma V DD TO V OH SOURCING V OL SINKING INPUT COMMON-MODE VOLTAGE (V) Figure 9. Offset Voltage vs. Common-Mode Voltage TEMPERATURE ( C) Figure. Output Saturation Voltage vs. Temperature 695- Rev. B Page 6 of 6

7 OPEN-LOOP GAIN (db) 8 6 PHASE GAIN V DD = 6V R L = kω C L = pf Ф M = OPEN-LOOP PHASE SHIFT (Degrees) PSRR (db) 8 6 V DD = 6V PSRR k 5 k k M M Figure 3. Open-Loop Gain and Phase vs. Frequency 695- k PSRR+ k k M Figure 6. Power Supply Rejection Ratio vs. Frequency M 695- V DD = 6V TO 6V Z OUT (Ω). A V = + A V = + A V = + VOLTAGE NOISE DENSITY (nv/ Hz). k k k M M Figure. Closed-Loop Output Impedance vs. Frequency 695- k k Figure 7. Voltage Noise Density vs. Frequency V DD = 6V TO 6V CMRR (db) 8 6 VOLTAGE (µv/div) k k k M Figure 5. Common-Mode Rejection Ratio vs. Frequency M TIME (s/div) Figure 8.. Hz to Hz Voltage Noise Rev. B Page 7 of 6

8 V DD = 6V R L = kω C L = pf A V = + V V DD = ±8V A V = V OUT (mv/div) mv 8V V IN V OUT V TIME (.5µs/DIV) TIME (5µs/DIV) 695- Figure 9. Small-Signal Transient Response Figure. Positive Overload Recovery Time 8 6 V DD = ±8V R L = kω C L = pf A V = + mv V IN V DD = ±8V A V = V OUT (V) V V 6 8 8V V OUT TIME (µs/div) Figure. Large-Signal Transient Response TIME (5µs/DIV) Figure 3. Negative Overload Recovery Time 695- OVERSHOOT (%) V DD = 6V V IN = mv p-p +OS OS NUMBER OF AMPLIFIERS V CM =.5V 55 AMPLIFIERS LOAD CAPACITANCE (pf) Figure. Small-Signal Overshoot vs. Load Capacitance INPUT OFFSET VOLTAGE (mv) Figure. Input Offset Voltage Distribution 695- Rev. B Page 8 of 6

9 NUMBER OF AMPLIFIERS V CM =.5V C T A +5 C 3 AMPLIFIERS OUTPUT SATURATION VOLTAGE (mv) 8 6 I LOAD = ma V DD TO V OH SOURCING V OL SINKING TCV OS (µv/ C) Figure 5. VOS Drift (TCVOS) Distribution TEMPERATURE ( C) Figure 8. Output Saturation Voltage vs. Temperature INPUT OFFSET VOLTAGE (mv) OPEN-LOOP GAIN (db) 8 6 PHASE GAIN Ф M = 7 R L = kω C L = pf OPEN-LOOP PHASE SHIFT (Degrees) INPUT COMMON-MODE VOLTAGE (V) Figure 6. Offset Voltage vs. Common-Mode Voltage 695- k k k M Figure 9. Open-Loop Gain and Phase vs. Frequency 5 M OUTPUT SATURATION VOLTAGE (mv) 3 VDD = 5V V DD TO V OH SOURCING V OL SINKING Z OUT (Ω). A V = + A V = + A V = LOAD CURRENT (ma) Figure 7. Output Saturation Voltage vs. Load Current k k k M M Figure 3. Closed-Loop Output Impedance vs. Frequency Rev. B Page 9 of 6

10 .5..5 V DD = ±.5V R L = kω C L = pf A V = + CMRR (db) 8 6 V OUT (V) k k k M Figure 3. Common-Mode Rejection Ratio vs. Frequency M TIME (µs/div) Figure 3. Large-Signal Transient Response V IN = mv p-p 5 PSRR (db) 6 PSRR+ PSRR OVERSHOOT (%) 3 +OS OS k k k M M LOAD CAPACITANCE (pf) Figure 3. Power Supply Rejection Ratio vs. Frequency Figure 35. Small-Signal Overshoot vs. Load Capacitance R L = kω C L = pf A V = +.5V V OUT V DD = ±.5V A V = V OUT (mv/div) V V V IN mv TIME (.µs/div) Figure 33. Small-Signal Transient Response TIME (µs/div) Figure 36. Positive Overload Recovery Time Rev. B Page of 6

11 V DD = ±.5V A V =..75 mv V V V IN SUPPLY CURRENT (ma) V OUT.5V TIME (µs/div) Figure 37. Negative Overload Recovery Time SUPPLY VOLTAGE (V) Figure 39. Supply Current vs. Supply Voltage V OUT = V DD / 8 V IN V DD = ±8V A V = V OUT SUPPLY CURRENT (ma) V DD = 6V VOLTAGE (V) TEMPERATURE ( C) Figure 38. Supply Current vs. Temperature TIME (µs/div) Figure. No Output Phase Reversal Rev. B Page of 6

12 OUTLINE DIMENSIONS 5. (.968).8 (.89). (.57) 3.8 (.97) (.) 5.8 (.8).5 (.98). (.) COPLANARITY. SEATING PLANE.7 (.5) BSC.75 (.688).35 (.53).5 (.).3 (.) 8.5 (.98).7 (.67).5 (.96).5 (.99).7 (.5). (.57) 5 COMPLIANT TO JEDEC STANDARDS MS--AA CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure. 8-Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-8) Dimensions shown in millimeters and (inches) 7-A PIN IDENTIFIER.65 BSC COPLANARITY...5. MAX 6 5 MAX.3.9 COMPLIANT TO JEDEC STANDARDS MO-87-AA Figure. 8-Lead Mini Small Outline Package [MSOP] (RM-8) Dimensions shown in millimeters B Rev. B Page of 6

13 BSC 7 PIN BSC COPLANARITY.9.. MAX SEATING PLANE..9 COMPLIANT TO JEDEC STANDARDS MO-53-AB- Figure 3. -Lead Thin Shrink Small Outline Package [TSSOP] (RU-) Dimensions shown in millimeters A 8.75 (.35) 8.55 (.3366). (.575) 3.8 (.96) (.) 5.8 (.83).5 (.98). (.39) COPLANARITY..7 (.5) BSC.5 (.).3 (.).75 (.689).35 (.53) SEATING PLANE 8.5 (.98).7 (.67).5 (.97).5 (.98).7 (.5). (.57) 5 COMPLIANT TO JEDEC STANDARDS MS--AB CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure. -Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-) Dimensions shown in millimeters and (inches) 666-A Rev. B Page 3 of 6

14 MAX.5 MIN Figure 5. 5-Lead Small Outline Transistor Package [SOT-3] (RJ-5) Dimensions shown in millimeters ORDERING GUIDE Model, Temperature Range Package Description Package Option Branding AD8665ARZ C to +5 C 8-Lead SOIC_N R-8 AD8665ARZ-REEL C to +5 C 8-Lead SOIC_N R-8 AD8665ARZ-REEL7 C to +5 C 8-Lead SOIC_N R-8 AD8665ARJZ-R C to +5 C 5-Lead SOT-3 RJ-5 AB AD8665ARJZ-REEL C to +5 C 5-Lead SOT-3 RJ-5 AB AD8665ARJZ-REEL7 C to +5 C 5-Lead SOT-3 RJ-5 AB AD8666ARZ C to +5 C 8-Lead SOIC_N R-8 AD8666ARZ-REEL C to +5 C 8-Lead SOIC_N R-8 AD8666ARZ-REEL7 C to +5 C 8-Lead SOIC_N R-8 AD8666ARMZ C to +5 C 8-Lead MSOP RM-8 A6 AD8666ARMZ-REEL C to +5 C 8-Lead MSOP RM-8 A6 AD8666WARZ-R7 C to +5 C 8-Lead SOIC_N R-8 AD8666WARZ-RL C to +5 C 8-Lead SOIC_N R-8 AD8668ARZ C to +5 C -Lead SOIC_N R- AD8668ARZ-REEL C to +5 C -Lead SOIC_N R- AD8668ARZ-REEL7 C to +5 C -Lead SOIC_N R- AD8668ARUZ C to +5 C -Lead TSSOP RU- AD8668ARUZ-REEL C to +5 C -Lead TSSOP RU- AD8668WARUZ-R7 C to +5 C -Lead TSSOP RU- AD8668WARUZ-RL C to +5 C -Lead TSSOP RU- Z = RoHS Compliant Model W = Qualified for Automotive Applications..9 BSC.95 BSC.5 MAX.35 MIN.5 MAX.95 MIN SEATING PLANE. MAX.8 MIN 5 COMPLIANT TO JEDEC STANDARDS MO-78-AA.6 BSC A AUTOMOTIVE PRODUCTS The AD8666W/AD8668W models are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. Note that these automotive models may have specifications that differ from the commercial models; therefore, designers should review the Specifications section of this data sheet carefully. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for these models. Rev. B Page of 6

15 NOTES Rev. B Page 5 of 6

16 NOTES 6 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D695--7/(B) Rev. B Page 6 of 6