OP191 Analog Devices, OP191 Datasheet
OP191
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OP191 Summary of contents
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... Low voltage strain gage amplifiers DAC output amplifiers GENERAL DESCRIPTION The OP191, OP291, and OP491 are single, dual, and quad micropower, single-supply, 3 MHz bandwidth amplifiers featuring rail-to-rail inputs and outputs. All are guaranteed to operate from single supply as well as ±5 V dual supplies. ...
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... OP191/OP291/OP491 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Pin Configurations ........................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Specifications ............................................................... 3 Absolute Maximum Ratings ............................................................ 7 Thermal Resistance ...................................................................... 7 ESD Caution .................................................................................. 7 Typical Performance Characteristics ............................................. 8 Theory of Operation ...................................................................... 17 Input Overvoltage Protection ................................................... 18 Output Voltage Phase Reversal ................................................. 18 REVISION HISTORY 4/10—Rev Rev. E Changes to Input Voltage Parameter, Table 4 ............................... 7 4/06— ...
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... L – kΩ distortion 0.01% S GBP θ kHz kΩ p-p 0 kHz Rev Page OP191/OP291/OP491 Min Typ Max Unit 80 500 μ 700 μ ...
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... Table 2. Parameter INPUT CHARACTERISTICS Offset Voltage OP191 OP291/OP491 Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift Bias Current Drift Offset Current Drift OUTPUT CHARACTERISTICS Output Voltage High ...
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... T ≤ +125°C A ± kΩ distortion 0.01% S GBP θ kHz e p-p 0 kHz Rev Page OP191/OP291/OP491 Min Typ Max Unit 80 500 μ 700 μ − ...
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... OP191/OP291/OP491 100 INPUT IN OUTPUT Figure 6. Input and Output with Inputs Overdriven Rev Page ±5V = 2kΩ 20V p-p 200μs ...
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... Table 5. Thermal Resistance Package Type −65°C to +150°C 8-Lead SOIC (R) 14-Lead PDIP (N) −40°C to +125°C 14-Lead SOIC (R) 14-Lead TSSOP (RU) −65°C to +150°C 300°C ESD CAUTION Rev Page OP191/OP291/OP491 specified JA θ θ Unit JA JC 158 43 °C/W ...
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... OP191/OP291/OP491 TYPICAL PERFORMANCE CHARACTERISTICS 180 25°C A 160 BASED ON 1200 OP AMPS 140 120 100 –0.18 –0.10 –0.02 0.06 INPUT OFFSET VOLTAGE (mV) Figure 7. OP291 Input Offset Voltage Distribution, V 120 V S –40°C < T 100 BASED ON 600 OP AMPS ...
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... 0.3V/2. 125 = Rev Page OP191/OP291/OP491 0 10 100 1k 10k 100k FREQUENCY (Hz) Figure 16. Closed-Loop Gain vs. Frequency 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 17. CMRR vs. Frequency – TEMPERATURE (°C) Figure 18 ...
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... OP191/OP291/OP491 160 140 120 100 80 60 –PSRR –20 –40 100 1k 10k 100k FREQUENCY (Hz) Figure 19. PSRR vs. Frequency, V 113 112 111 110 109 108 107 –40 25 TEMPERATURE (°C) Figure 20. PSRR vs. Temperature 1.4 +SR 1.2 1.0 0.8 0.6 0.4 –SR 0.2 0 –40 25 TEMPERATURE (°C) Figure 21. Slew Rate vs. Temperature, V ±PSRR ...
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... Figure 29. Input Offset Current vs. Temperature –6 –12 –18 –24 –30 –36 125 = 5 V Figure 30. Input Bias Current vs. Common-Mode Input Voltage Rev Page OP191/OP291/OP491 TEMPERATURE (° TEMPERATURE (°C) ...
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... OP191/OP291/OP491 5.00 4.95 4.90 4. 2kΩ L 4.80 4. 4.70 –40 25 TEMPERATURE (°C) Figure 31. Output Voltage Swing vs. Temperature, V 160 140 120 100 –20 –40 100 1k 10k 100k FREQUENCY (Hz) Figure 32. Open-Loop Gain and Phase vs. Frequency, V 140 R = 100kΩ 120 L CM 100 100kΩ, V ...
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... 125 = 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 100 125 Figure 42. Maximum Output Swing vs. Frequency Rev Page OP191/OP291/OP491 + ± – ± + – + TEMPERATURE (° ± 10kΩ ...
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... OP191/OP291/OP491 100 1k 10k FREQUENCY (Hz) Figure 43. Maximum Output Swing vs. Frequency, V 0.15 0. – +5V CM –0.05 –0.10 –40 25 TEMPERATURE (°C) Figure 44. Input Offset Voltage vs. Temperature ± + –10 – –5V CM –30 –40 –50 –40 25 TEMPERATURE (°C) Figure 45 ...
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... V S 160 V = ±5V S 140 T = 25°C A 120 100 –20 –40 1M 10M 100 = ± Rev Page OP191/OP291/OP491 CMRR 10k 100k 1M FREQUENCY (Hz) Figure 52. CMRR vs. Frequency ± ± TEMPERATURE (°C) Figure 53. CMRR vs. Temperature, V =± ±PSRR V ...
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... OP191/OP291/OP491 115 V = ±5V S 110 OP291 105 100 95 90 –40 25 TEMPERATURE (°C) Figure 55. OP291/OP491 PSRR vs. Temperature ±5V S 0.6 +SR 0.5 –SR 0.4 0.3 0.2 0.1 0 –40 25 TEMPERATURE (°C) Figure 56. Slew Rate vs. Temperature +100 V 100 0.1 1k 10k 100k FREQUENCY (Hz) Figure 57. Output Impedance vs. Frequency ...
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... Evaluate each circuit carefully to make sure that the increase in current does not affect the performance. The output stage in OP191 devices uses a PNP and an NPN transistor most output stages; however, Q32 and Q33, the output transistors, are actually connected with their collectors to the output pin to achieve the rail-to-rail output swing ...
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... In fact, the input signal can exceed the supply voltage by a significant amount without causing damage to the device. As shown in Figure 64, the OP191 family can safely handle p-p input signal on ±5 V supplies without exhibiting any sign of output voltage phase reversal or other anomalous behavior. Thus, no external clamping diodes are required ...
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... A 0.01 μF capacitor is included in parallel with the 100 kΩ resistor on Amplifier A3 to filter out any unwanted noise from this high gain circuit. This particular RC combination creates a pole at 1.6 kHz. Rev Page OP191/OP291/OP491 GAIN = 274 200Ω 10 TURNS 5V 26.7kΩ ...
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... OP191/OP291/OP491 A 2.5 V REFERENCE FROM SUPPLY In many single-supply applications, the need for a 2.5 V reference often arises. Many commercially available monolithic 2.5 V references require a minimum operating supply voltage The problem is exacerbated when the minimum operating system supply voltage The circuit illustrated in Figure example ...
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... Figure 71. Single-Supply, Direct Access Arrangement for Modems The OP491 bandwidth of 3 MHz and rail-to-rail output swings ensure that it can provide the largest possible drive to the transformer at the frequency of transmission. Rev Page OP191/OP291/OP491 390pF 37.4kΩ 20kΩ, 0.1μ ...
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... OP191/OP291/OP491 HZ/60 HZ ACTIVE NOTCH FILTER WITH FALSE GROUND To process ac signals in a single-supply system often best to use a false ground biasing scheme. Figure 72 illustrates a circuit that uses this approach. In this circuit, a false-ground circuit biases an active notch filter used to reject 50 Hz/60 Hz power line interference in portable patient monitoring equipment ...
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... Dimensions shown in millimeters and (inches) 5.10 5.00 4. 6.40 BSC 1 7 0.65 BSC 1.20 0.20 MAX 0.09 SEATING 0.30 PLANE 0.19 COMPLIANT TO JEDEC STANDARDS MO-153-AB-1 Figure 76. 14-Lead Thin Shrink Small Outline Package [TSSOP] (RU-14) Dimensions shown in millimeters Rev Page OP191/OP291/OP491 0.50 (0.0196) 45° 0.25 (0.0099) 1.27 (0.0500) 0.40 (0.0157) 0.50 (0.0197) 45° 0.25 (0.0098) 8° 0° 1.27 (0.0500) 0.40 (0.0157) 0.75 8° 0.60 0° 0.45 ...
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... OP191/OP291/OP491 0.210 (5.33) MAX 0.150 (3.81) 0.130 (3.30) 0.110 (2.79) 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) ORDERING GUIDE 1 Model OP191GS OP191GS-REEL OP191GS-REEL7 OP191GSZ OP191GSZ-REEL OP191GSZ-REEL7 OP291GS OP291GS-REEL OP291GS-REEL7 OP291GSZ OP291GSZ-REEL OP291GSZ-REEL7 OP491GP OP491GPZ OP491GRU-REEL OP491GRUZ-REEL OP491GS OP491GS-REEL OP491GS-REEL7 OP491GSZ OP491GSZ-REEL OP491GSZ-REEL7 RoHS Compliant Part. ©1994–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners ...