CLC1007, CLC2007, CLC4007 Single, Dual, and Quad Low Cost, High Speed RRO Amplifiers
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1 CLC17, CLC27, CLC47 Single, Dual, and Quad Low Cost, High Speed RRO Amplifiers General Description The CLC17 (single), CLC27 (dual) and CLC47(quad) are low cost, voltage feedback amplifiers. These amplifiers are designed to operate on +V to +5V, or ±5V supplies. The input voltage range extends mv below the negative rail and.9v below the positive rail. The CLC17, CLC27, and CLC47 offer superior dynamic performance with a 26MHz small signal bandwidth and 22V/μs slew rate. The combination of low power, high output current drive, and rail-torail performance make these amplifiers well suited for battery-powered communication/computing systems. The combination of low cost and high performance make the CLC17, CLC27, and CLC47 suitable for high volume applications in both consumer and industrial applications such as wireless phones, scanners, color copiers, and video transmission. FEATURES 26MHz bandwidth Fully specified at +V, +5V and ±5V supplies Output voltage range:.v to 4.95V; V S = +5; R L = 2kΩ Input voltage range: -.V to +4.1V; V S = +5 22V/μs slew rate 2.6mA supply current per amplifier ±1mA linear output current ±125mA short circuit current CLC27 directly replaces LMH664, AD842, AD852, and AD892 CLC17 directly replaces LMH6642, AD841, AD851, and AD891 APPLICATIONS A/D driver Active filters CCD imaging systems CD/DVD ROM Coaxial cable drivers High capacitive load driver Portable/battery-powered applications Twisted pair driver Telecom and optical terminals Video driver Ordering Information - page 26 Large Signal Frequency Response Vout = 2Vpp - Vout = Vpp Vout = 4Vpp Vs = +/- 5V Output Voltage Swing vs Competition Output Amplitude (V) RL = 5Ω VS = ±5V CLC27 Competition Input Amplitude (V) Exar Corporation 1 / 27 exar.com/clc17
2 CLC17, CLC27, CLC47 Absolute Maximum Ratings Stresses beyond the limits listed below may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. V S... V to +14V V IN... -V S -.5V to +V S +.5V Operating Conditions Supply Voltage Range to 12.6V Operating Temperature Range...-4 C to 125 C Junction Temperature...15 C Storage Temperature Range...5 C to 15 C Lead Temperature (Soldering, 1s)...26 C Package Thermal Resistance θ JA (TSOT2-5) C/W θ JA (SOIC-8)...15 C/W θ JA (MSOP-8)... 2 C/W θ JA (SOIC-14)... 9 C/W θ JA (TSSOP-14)...1 C/W Package thermal resistance (θ JA ), JEDEC standard, multi-layer test boards, still air. ESD Protection TSOT-5 (HBM)...1kV SOIC-8 (HBM)...1kV TSOT-5 (CDM)...2kV SOIC-8 (CDM)...2kV ESD Rating for HBM (Human Body Model) and CDM (Charged Device Model) Exar Corporation 2 / 27 exar.com/clc17
3 CLC17, CLC27, CLC47 Electrical Characteristics at +V T A = 25 C, V S = +V, R f = 1.5kΩ, R L = 2kΩ to V S /2; G = 2; unless otherwise noted. Symbol Parameter Conditions Min Typ Max Units Frequency Domain Response GBWP -db Gain Bandwidth Product G = +11, V OUT =.2V pp 9 MHz UGBW Unity Gain Bandwidth V OUT =.2V pp, R F = 245 MHz BW SS -db Bandwidth V OUT =.2V pp 85 MHz f.1db.1db Gain Flatness V OUT =.2V pp, R L = 15Ω 16 MHz BW LS Large Signal Bandwidth V OUT = 2V pp 55 MHz DG DP Time Domain Differential Gain Differential Phase DC-coupled Output. % AC-coupled Output.4 % DC-coupled Output. AC-coupled Output.6 t R, t F Rise and Fall Time V OUT =.2V step; (1% to 9%) 5 ns t S Settling Time to.1% V OUT = 1V step 25 ns OS Overshoot V OUT =.2V step 8 % SR Slew Rate G = -1, 2V step 175 V/μs Distortion/Noise Response THD Total Harmonic Distortion 1MHz, V OUT = 1V pp 75 dbc e n Input Voltage Noise >5kHz 16 nv/ Hz X TALK Crosstalk f = 5MHz 58 db DC Performance V IO Input Offset Voltage.5 mv d VIO Average Drift 5 μv/ C I B Input Bias Current 1.4 μa di B Average Drift 2 na/ C I OS Input Offset Current.5 μa PSRR Power Supply Rejection Ratio DC 12 db A OL Open Loop Gain R L = 2kΩ 92 db I S Supply Current per channel 2.6 ma Input Characteristics C IN Input Capacitance.5 pf CMIR Common Mode Input Range CMRR Common Mode Rejection Ratio DC, V CM = to 1.5V 1 db Output Characteristics V OUT Output Swing R L = 15Ω R L = 2kΩ I OUT Output Current ±1 ma I SC Short Circuit Current V OUT = V S / 2 ±125 V V S Power Supply Operating Range -. to 2.1. to to to 12.6 V V V V Exar Corporation / 27 exar.com/clc17
4 CLC17, CLC27, CLC47 Electrical Characteristics at +5V T A = 25 C, V S = +5V, R f = 1.5kΩ, R L = 2kΩ to V S /2; G = 2; unless otherwise noted. Symbol Parameter Conditions Min Typ Max Units Frequency Domain Response GBWP -db Gain Bandwidth Product G = +11, V OUT =.2V pp 95 MHz UGBW Unity Gain Bandwidth V OUT =.2V pp, R F = 25 MHz BW SS -db Bandwidth V OUT =.2V pp 85 MHz f.1db.1db Gain Flatness V OUT =.2V pp, R L = 15Ω 5 MHz BW LS Large Signal Bandwidth V OUT = 2V pp 65 MHz DG DP Time Domain Differential Gain Differential Phase DC-coupled Output. % AC-coupled Output.4 % DC-coupled Output. AC-coupled Output.6 t R, t F Rise and Fall Time V OUT =.2V step 5 ns t S Settling Time to.1% V OUT = 2V step 25 ns OS Overshoot V OUT =.2V step 5 % SR Slew Rate G = -1, 4V step 22 V/μs Distortion/Noise Response THD Total Harmonic Distortion 1MHz, V OUT = 2V pp -75 dbc e n Input Voltage Noise >5kHz 16 nv/ Hz X TALK Crosstalk f = 5MHz 58 db DC Performance V IO Input Offset Voltage mv d VIO Average Drift 5 μv/ C I B Input Bias Current μa di B Average Drift 2 na/ C I OS Input Offset Current μa PSRR Power Supply Rejection Ratio DC 8 12 db A OL Open Loop Gain R L = 2kΩ 8 92 db I S Supply Current per channel ma Input Characteristics C IN Input Capacitance.5 pf CMIR Common Mode Input Range CMRR Common Mode Rejection Ratio DC, V CM = to.5v 75 1 db Output Characteristics V OUT Output Swing R L = 15Ω.5 R L = 2kΩ -. to to 4.9 V 4.65 V I OUT Output Current ±1 ma I SC Short Circuit Current V OUT = V S / 2 ±125 V V S Power Supply Operating Range. to to 12.6 V V Exar Corporation 4 / 27 exar.com/clc17
5 CLC17, CLC27, CLC47 Electrical Characteristics at ±5V T A = 25 C, V S = ±5V, R f = 1.5kΩ, R L = 2kΩ to GND; G = 2; unless otherwise noted. Symbol Parameter Conditions Min Typ Max Units Frequency Domain Response GBWP -db Gain Bandwidth Product G = +11, V OUT =.2V pp 9 MHz UGBW Unity Gain Bandwidth V OUT =.2V pp, R F = 26 MHz BW SS -db Bandwidth V OUT =.2V pp 85 MHz f.1db.1db Gain Flatness V OUT =.2V pp, R L = 15Ω 22 MHz BW LS Large Signal Bandwidth V OUT = 2V pp 65 MHz DG DP Time Domain Differential Gain Differential Phase DC-coupled Output. % AC-coupled Output.4 % DC-coupled Output. AC-coupled Output.6 t R, t F Rise and Fall Time V OUT =.2V step 5 ns t S Settling Time to.1% V OUT = 2V step, R L = 1Ω 25 ns OS Overshoot V OUT =.2V step 5 % SR Slew Rate G = -1, 5V step 225 V/μs Distortion/Noise Response THD Total Harmonic Distortion 1MHz, V OUT = 2V pp 76 dbc e n Input Voltage Noise >5kHz 16 nv/ Hz X TALK Crosstalk f = 5MHz 58 db DC Performance V IO Input Offset Voltage.5 mv d VIO Average Drift 5 μv/ C I B Input Bias Current 1. μa di B Average Drift 2 na/ C I OS Input Offset Current.4 μa PSRR Power Supply Rejection Ratio DC 12 db A OL Open Loop Gain R L = 2kΩ 92 db I S Supply Current per channel 2.6 ma Input Characteristics C IN Input Capacitance.5 pf CMIR Common Mode Input Range CMRR Common Mode Rejection Ratio DC, V CM = -5 to.5v 1 db Output Characteristics V OUT Output Swing R L = 15Ω R L = 2kΩ -5. to to to 4.9 I OUT Output Current ±1 ma I SC Short Circuit Current V OUT = V S / 2 ±125 V V S Power Supply Operating Range 2.7 to 12.6 V V V V Exar Corporation 5 / 27 exar.com/clc17
6 - CLC17, CLC27, CLC47 CLC17 Pin Configurations TSOT-5 CLC17 Pin Assignments TSOT-5 Pin No. Pin Name Description OUT -V s V s 1 OUT Output 2 -V S Negative supply +IN Positive input +IN 4 -IN 4 -IN Negative input 5 +V S Positive supply SOIC-8 SOIC-8 Pin No. Pin Name Description NC -IN NC +V s 1 NC No Connect 2 -IN Negative input +IN Positive input +IN + 6 OUT 4 -V S Negative supply 5 NC No Connect -V s 4 5 NC 6 OUT Output 7 +V S Positive supply 8 NC No Connect CLC27 Pin Configuration SOIC-8 / MSOP-8 CLC27 Pin Assignments SOIC-8 / MSOP-8 Pin No. Pin Name Description OUT1 1 1 OUT1 Output, channel 1 2 -IN1 Negative input, channel V s -IN1 +IN1 7 6 OUT2 -IN2 +IN1 Positive input, channel 1 4 -V S Negative supply 5 +IN2 Positive input, channel 2 -V s 4 5 +IN2 6 -IN2 Negative input, channel 2 7 OUT2 Output, channel 2 8 +V S Positive supply Exar Corporation 6 / 27 exar.com/clc17
7 CLC17, CLC27, CLC47 CLC47 Pin Configuration SOIC-14 / TSSOP-14 OUT1 -IN1 +IN OUT4 -IN4 +IN4 +V S V S +IN2 -IN2 OUT IN 9 8 -IN OUT CLC47 Pin Assignments SOIC-14 / TSSOP-14 Pin No. Pin Name Description 1 OUT1 Output, channel 1 2 -IN1 Negative input, channel 1 +IN1 Positive input, channel 1 4 +V S Positive supply 5 +IN2 Positive input, channel 2 6 -IN2 Negative input, channel 2 7 OUT2 Output, channel 2 8 OUT Output, channel 9 -IN Negative input, channel 1 +IN Positive input, channel 11 -V S Negative supply 12 +IN4 Positive input, channel 4 1 -IN4 Negative input, channel 4 14 OUT4 Output, channel Exar Corporation 7 / 27 exar.com/clc17
8 Typical Performance Characteristics at +V T A = 25 C, V S = +V, R L = 2kΩ to V S /2, G = +2, R F = 1.5kΩ; unless otherwise noted. CLC17, CLC27, CLC47 Non-Inverting Frequency Response Inverting Frequency Response G = +1, RF = Ω G = -1 - G = +2 G = +5 G = +1 - G = -2 G = -5 G = -1 Vs = +V, V OUT =.2V pp Vs = +V, V OUT =.2V pp Frequency Response vs C L Frequency Response vs R L - Vs = +V, V OUT =.2V pp CL = 492pF RS = 7.5Ω CL = 1pF RS = 4.Ω CL = 1pF RS = 18Ω CL = 47pF RS = 2Ω CL = 22pF No RS - RL = 5Ω RL = 1KΩ RL = 15Ω RL = 5KΩ Vs = +V, V OUT =.2V pp Large Signal Frequency Response -db BW vs Output Voltage RL = 2KΩ - Vout = 1Vpp Vout = 2Vpp -db Bandwidth (MHz) RL = 15Ω Vs = +V Vs = +V Output Voltage (Vpp) Exar Corporation 8 / 27 exar.com/clc17
9 Typical Performance Characteristics at +V T A = 25 C, V S = +V, R L = 2kΩ to V S /2, G = +2, R F = 1.5kΩ; unless otherwise noted. CLC17, CLC27, CLC47 Input Voltage Noise vs Frequency nd Harmonic Distortion vs R L over Frequency -2 - Input Voltage Noise (nv/ Hz) Frequency (KHz) Distortion (dbc) Hd2_R L = 2KΩ Hd2_R L = 15Ω Vs = +V_V OUT = 1V pp rd Harmonic Distortion vs R L over Frequency -2 2nd Harmonic Distortion vs V O over Frequency -4 Distortion (dbc) Hd_R L = 15Ω Hd_R L = 2KΩ Vs = +V_V OUT = 1V pp Distortion (dbc) -5 5MHz 2MHz MHz Vs = +V_RL = 15Ω Output Amplitude (Vpp) rd Harmonic Distortion vs V O over Frequency -4 Non-Inverting Small Signal Pulse Response Distortion (dbc) MHz 2MHz Voltage (V) MHz Vs = +V_RL = 15Ω Output Amplitude (Vpp) 1. Vs = +V Time (ns) Exar Corporation 9 / 27 exar.com/clc17
10 Typical Performance Characteristics at +V T A = 25 C, V S = +V, R L = 2kΩ to V S /2, G = +2, R F = 1.5kΩ; unless otherwise noted. CLC17, CLC27, CLC47 Non-Inverting Large Signal Pulse Response Crosstalk vs Frequency (CLC27) Voltage (V) Crosstalk (db) Vs = +V Time (ns) Vs = +V, RL = 15Ω, V OUT = 2V pp Differential Gain & Phase_DC Coupled Differential Gain & Phase_AC Coupled Exar Corporation 1 / 27 exar.com/clc17
11 Typical Performance Characteristics at +5V T A = 25 C, V S = +5V, R L = 2kΩ to V S /2, G = +2, R F = 1.5kΩ; unless otherwise noted. CLC17, CLC27, CLC47 Non-Inverting Frequency Response Inverting Frequency Response G = +1, RF = Ω G = -1 - G = +2 G = +5 G = +1 - G = -2 G = -5 G = -1 Vs = +5V, V OUT =.2V pp Vs = +5V, V OUT =.2V pp Frequency Response vs C L Frequency Response vs R L - Vs = +5V, V OUT =.2V pp CL = 492pF RS = 7.5Ω CL = 1pF RS = 4.Ω CL = 1pF RS = 18Ω CL = 47pF RS = 2Ω CL = 22pF No RS - RL = 5Ω RL = 1KΩ RL = 15Ω RL = 5KΩ Vs = +5V, V OUT =.2V pp Large Signal Frequency Response -db BW vs Output Voltage 11 1 RL = 2KΩ 9 - Vout = 1Vpp Vout = 2Vpp Vout = Vpp -db Bandwidth (MHz) RL = 15Ω Vs = 5V Vs = +5V Output Voltage (Vpp) Exar Corporation 11 / 27 exar.com/clc17
12 Typical Performance Characteristics at +5V T A = 25 C, V S = +5V, R L = 2kΩ to V S /2, G = +2, R F = 1.5kΩ; unless otherwise noted. CLC17, CLC27, CLC47 Input Voltage Noise vs Frequency nd Harmonic Distortion vs R L over Frequency -2 - Input Voltage Noise (nv/ Hz) Frequency (KHz) Distortion (dbc) Hd2_R L = 2KΩ Hd2_R L = 15Ω Vs = +5V_V OUT = 2V pp rd Harmonic Distortion vs R L over Frequency -2 2nd Harmonic Distortion vs V O over Frequency -4 Distortion (dbc) Hd_R L = 15Ω Hd_R L = 2kΩ -5 5MHz 2MHz MHz Vs = +/-5V_V +5V_V OUT OUT = = 2V 2V pp pp Vs = +5V_RL = 15Ω Output Amplitude (Vpp) Distortion (dbc) rd Harmonic Distortion vs V O over Frequency -4 Non-Inverting Small Signal Pulse Response Distortion (dbc) MHz 2MHz Voltage (V) MHz Vs = +5V_RL = 15Ω Output Amplitude (Vpp) 2. Vs = +5V Time (ns) Exar Corporation 12 / 27 exar.com/clc17
13 Typical Performance Characteristics at +5V T A = 25 C, V S = +5V, R L = 2kΩ to V S /2, G = +2, R F = 1.5kΩ; unless otherwise noted. CLC17, CLC27, CLC47 Non-Inverting Large Signal Pulse Response 5 Crosstalk vs Frequency (CLC27) -4 Voltage (V) 4 2 Crosstalk (db) Vs = +5V Time (ns) Vs = +5V, RL = 15Ω, V OUT = 2V pp Differential Gain & Phase_DC Coupled Differential Gain & Phase_AC Coupled Exar Corporation 1 / 27 exar.com/clc17
14 Typical Performance Characteristics at ±5V T A = 25 C, V S = ±5V, R L = 2kΩ to GND, G = +2, R F = 1.5kΩ; unless otherwise noted. CLC17, CLC27, CLC47 Non-Inverting Frequency Response Inverting Frequency Response G = +1, RF = Ω G = -1 - G = +2 G = +5 G = +1 - G = -2 G = -5 G = -1 Vs = +/- 5V, V OUT =.2V pp Vs = +/- 5V, V OUT =.2V pp Frequency Response vs C L Frequency Response vs R L - Vs = +/- 5V, V OUT =.2V pp CL = 492pF RS = 6.5Ω CL = 1pF RS = 4.Ω CL = 1pF RS = 15Ω CL = 47pF RS = 15Ω CL = 22pF No RS - RL = 5Ω RL = 1KΩ RL = 15Ω RL = 5KΩ Vs = +/-5V, V OUT =.2V pp Large Signal Frequency Response -db BW vs Output Voltage RL = 2KΩ - Vout = 2Vpp Vout = Vpp Vout = 4Vpp -db Bandwidth (MHz) RL = 15Ω Vs = +/- 5V Vs = +/-5V Output Voltage (Vpp) Exar Corporation 14 / 27 exar.com/clc17
15 Typical Performance Characteristics at ±5V T A = 25 C, V S = ±5V, R L = 2kΩ to GND, G = +2, R F = 1.5kΩ; unless otherwise noted. CLC17, CLC27, CLC47 Input Voltage Noise vs Frequency nd Harmonic Distortion vs R L over Frequency -2 - Input Voltage Noise (nv/ Hz) Frequency (KHz) Distortion (dbc) Hd2_R L = 2KΩ Hd2_R L = 15Ω Vs = +/-5V_V OUT = 2V pp rd Harmonic Distortion vs R L over Frequency -2 2nd Harmonic Distortion vs V O over Frequency -4 Distortion (dbc) Hd_R L = 15Ω Hd_R L = 2kΩ -5 5MHz 2MHz MHz Vs = +/-5V_V OUT = 2V pp Vs = +/-5V_RL = 15Ω Output Amplitude (Vpp) Distortion (dbc) rd Harmonic Distortion vs V O over Frequency -4-5 Non-Inverting Small Signal Pulse Response Distortion (dbc) MHz 2MHz Voltage (V) MHz Vs = +/-5V_RL = 15Ω Output Amplitude (Vpp) Vs = +/-5V Time (ns) Exar Corporation 15 / 27 exar.com/clc17
16 Typical Performance Characteristics at ±5V T A = 25 C, V S = ±5V, R L = 2kΩ to GND, G = +2, R F = 1.5kΩ; unless otherwise noted. CLC17, CLC27, CLC47 Non-Inverting Large Signal Pulse Response Crosstalk vs Frequency (CLC27) Voltage (V) 1-1 Crosstalk (db) Vs = +/-5V Time (ns) Vs = +/- 5V, RL = 15Ω, V OUT = 2V pp Differential Gain & Phase_DC Coupled Differential Gain & Phase_AC Coupled Exar Corporation 16 / 27 exar.com/clc17
17 CLC17, CLC27, CLC47 Application Information General Description The CLC17, CLC27, and CLC47 are single supply, general purpose, voltage-feedback amplifiers fabricated on a complementary bipolar process using a patent pending topography. They feature a rail-to-rail output stage and is unity gain stable. Both gain bandwidth and slew rate are insensitive to temperature. The common mode input range extends to mv below ground and to.9v below Vs. Exceeding these values will not cause phase reversal. However, if the input voltage exceeds the rails by more than.5v, the input ESD devices will begin to conduct. The output will stay at the rail during this overdrive condition. The design is short circuit protected and offers soft saturation protection that improves recovery time. Figures 1, 2, and illustrate typical circuit configurations for non-inverting, inverting, and unity gain topologies for dual supply applications. They show the recommended bypass capacitor values and overall closed loop gain equations. Figure 4 shows the typical non-inverting gain circuit for single supply applications. Input +V s 6.8μF.1μF + -.1μF 6.8μF G = 1 -V s Figure : Unity Gain Circuit +V s In μF +.1μF Out R f Output R L +V s 6.8μF R g Input +.1μF Output - R L.1μF R f R g -V s 6.8μF G = 1 + (R f/r g) Figure 1: Typical Non-Inverting Gain Circuit Figure 4: Single Supply Non-Inverting Gain Circuit Overdrive Recovery For an amplifier, an overdrive condition occurs when the output and/or input ranges are exceeded. The recovery time varies based on whether the input or output is overdriven and by how much the ranges are exceeded. The CLC17, CLC27, and CLC47 will typically recover in less than 2ns from an overdrive condition. Figure 5 shows the CLC27 in an overdriven condition. +V s 6.8μF 6 4 OUTPUT Input R 1 R g + -.1μF.1μF R f R L Output Voltage (V) 2-2 INPUT -4 -V s 6.8μF G = - (R f/r g) For optimum input offset voltage set R 1 = R f R g Vs = +/-5V_RL=2K_AV= , Time (ns) Figure 2: Typical Inverting Gain Circuit Figure 5: Overdrive Recovery Exar Corporation 17 / 27 exar.com/clc17
18 CLC17, CLC27, CLC47 Power Dissipation Power dissipation should not be a factor when operating under the stated 2kΩ load condition. However, applications with low impedance, DC coupled loads should be analyzed to ensure that maximum allowed junction temperature is not exceeded. Guidelines listed below can be used to verify that the particular application will not cause the device to operate beyond it s intended operating range. Maximum power levels are set by the absolute maximum junction rating of 17 C. To calculate the junction temperature, the package thermal resistance value Theta JA (θ JA ) is used along with the total die power dissipation. T Junction = T Ambient + (θ JA P D ) Where T Ambient is the temperature of the working environment. In order to determine P D, the power dissipated in the load needs to be subtracted from the total power delivered by the supplies. P D = P supply - P load Supply power is calculated by the standard power equation. P supply = V supply I RMSsupply V supply = V S+ - V S- Power delivered to a purely resistive load is: P load = ((V load ) RMS 2 )/Rloadeff The effective load resistor (Rload eff ) will need to include the effect of the feedback network. For instance, Rload eff in Figure would be calculated as: R L (R f + R g ) These measurements are basic and are relatively easy to perform with standard lab equipment. For design purposes however, prior knowledge of actual signal levels and load impedance is needed to determine the dissipated power. Here, P D can be found from P D = P Quiescent + P Dynamic - P load Quiescent power can be derived from the specified I S values along with known supply voltage, V supply. Load power can be calculated as above with the desired signal amplitudes using: (V load ) RMS = V peak / 2 ( I load ) RMS = ( V load ) RMS / Rload eff The dynamic power is focused primarily within the output stage driving the load. This value can be calculated as: Assuming the load is referenced in the middle of the power rails or V supply /2. The CLC17 is short circuit protected. However, this may not guarantee that the maximum junction temperature (+15 C) is not exceeded under all conditions. Figure 6 shows the maximum safe power dissipation in the package vs. the ambient temperature for the packages available. Maximum Power Dissipation (W) SOIC-8 MSOP-8 TSSOP-14 TSOT-5 SOIC Ambient Temperature ( C) Figure 6. Maximum Power Derating Driving Capacitive Loads Increased phase delay at the output due to capacitive loading can cause ringing, peaking in the frequency response, and possible unstable behavior. Use a series resistance, R S, between the amplifier and the load to help improve stability and settling performance. Refer to Figure 7. Input R g + - R f R s Output Figure 7. Addition of R S for Driving Capacitive Loads Table 1 provides the recommended R S for various capacitive loads. The recommended R S values result in approximately <1dB peaking in the frequency response. C L R L C L (pf) R S (Ω) -db BW (MHz) 22pF pF pF pF P Dynamic = (V S+ - V load ) RMS ( I load ) RMS Table 1: Recommended R S vs. C L Exar Corporation 18 / 27 exar.com/clc17
19 CLC17, CLC27, CLC47 For a given load capacitance, adjust R S to optimize the tradeoff between settling time and bandwidth. In general, reducing R S will increase bandwidth at the expense of additional overshoot and ringing. Layout Considerations General layout and supply bypassing play major roles in high frequency performance. Exar has evaluation boards to use as a guide for high frequency layout and as an aid in device testing and characterization. Follow the steps below as a basis for high frequency layout: Include 6.8µF and.1µf ceramic capacitors for power supply decoupling Place the 6.8µF capacitor within.75 inches of the power pin Place the.1µf capacitor within.1 inches of the power pin Remove the ground plane under and around the part, especially near the input and output pins to reduce parasitic capacitance Minimize all trace lengths to reduce series inductances Refer to the evaluation board layouts below for more information. Figure 8. CEB2 & CEB Schematic Evaluation Board Information The following evaluation boards are available to aid in the testing and layout of these devices: Evaluation Board # CEB2 CEB CEB6 CEB1 CEB18 CEB19 Products CLC17 in TSOT CLC17 in SOIC CLC27 in SOIC CLC27 in MSOP CLC47 in SOIC CLC47 in TSSOP Evaluation Board Schematics Evaluation board schematics and layouts are shown in Figures 8-2. These evaluation boards are built for dualsupply operation. Follow these steps to use the board in a single-supply application: 1. Short -V S to ground. 2. Use C and C4, if the -V S pin of the amplifier is not directly connected to the ground plane. Figure 9. CEB2 Top View Exar Corporation 19 / 27 exar.com/clc17
20 CLC17, CLC27, CLC47 Figure 1. CEB2 Bottom View Figure 1. CEB6 & CEB1 Schematic Figure 11. CEB Top View Figure 14. CEB6 Top View Figure 12. CEB Bottom View Exar Corporation 2 / 27 exar.com/clc17
21 CLC17, CLC27, CLC47 Figure 15. CEB6 Bottom View Figure 18. CEB18 Schematic Figure 16. CEB1 Top View Figure 19. CEB18 Top View Figure 17. CEB1 Bottom View Exar Corporation 21 / 27 exar.com/clc17
22 CLC17, CLC27, CLC47 Figure 2. CEB18 Bottom View Exar Corporation 22 / 27 exar.com/clc17
23 CLC17, CLC27, CLC47 Mechanical Dimensions TSOT-5 Package MSOP-8 Package Exar Corporation 2 / 27 exar.com/clc17
24 CLC17, CLC27, CLC47 SOIC-8 Package SOIC-14 Package Exar Corporation 24 / 27 exar.com/clc17 ECN /1/21
25 CLC17, CLC27, CLC47 TSSOP-14 Package Exar Corporation 25 / 27 exar.com/clc17
26 CLC17, CLC27, CLC47 Ordering Information Part Number Package Green Operating Temperature Range Packaging CLC17 Ordering Information CLC17IST5X TSOT-5 Yes -4 C to +125 C Tape & Reel CLC17IST5MTR TSOT-5 Yes -4 C to +125 C Mini Tape & Reel CLC17IST5EVB Evaluation Board N/A N/A N/A CLC17ISO8X SOIC-8 Yes -4 C to +125 C Tape & Reel CLC17ISO8MTR SOIC-8 Yes -4 C to +125 C Mini Tape & Reel CLC17ISO8EVB Evaluation Board N/A N/A N/A CLC27 Ordering Information CLC27ISO8X SOIC-8 Yes -4 C to +125 C Tape & Reel CLC27ISO8MTR SOIC-8 Yes -4 C to +125 C Mini Tape & Reel CLC27ISO8EVB Evaluation Board N/A N/A N/A CLC27IMP8X MSOP-8 Yes -4 C to +125 C Tape & Reel CLC27IMP8MTR MSOP-8 Yes -4 C to +125 C Mini Tape & Reel CLC27IMP8EVB Evaluation Board N/A N/A N/A CLC47 Ordering Information CLC47ITP14X TSSOP-14 Yes -4 C to +125 C Tape & Reel CLC47ITP14MTR TSSOP-14 Yes -4 C to +125 C Mini Tape & Reel CLC47ITP14EVB Evaluation Board N/A N/A N/A CLC47ISO14X SOIC-14 Yes -4 C to +125 C Tape & Reel CLC47ISO14MTR SOIC-14 Yes -4 C to +125 C Mini Tape & Reel CLC47ISO14EVB Evaluation Board N/A N/A N/A Moisture sensitivity level for all parts is MSL Exar Corporation 26 / 27 exar.com/clc17
27 CLC17, CLC27, CLC47 Revision History Revision Date Description 1D (ECN ) December 214 Reformat into Exar data sheet template. Updated ordering information table to include MTR and EVB part numbers. Increased I temperature range from +85 to +125 C. Removed A temp grade parts, since I is now equivalent. Updated thermal resistance numbers and package outline drawings. For Further Assistance: CustomerSupport@exar.com or HPATechSupport@exar.com Exar Technical Documentation: Exar Corporation Headquarters and Sales Offices 4876 Kato Road Tel.: +1 (51) Fremont, CA USA Fax: +1 (51) NOTICE EXAR Corporation reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained here in are only for illustration purposes and may vary depending upon a user s specific application. While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances. Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited Exar Corporation 27 / 27 exar.com/clc17
CLC2011, CLC4011 Low Power, Low Cost, Rail-to-Rail I/O Amplifiers
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