OP481 Analog Devices, OP481 Datasheet
OP481
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OP481 Summary of contents
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... The output’s ability to swing rail-to-rail and not increase supply current when the output is driven to a supply voltage enables the OP281/OP481 to be used as comparators in very low power systems. This is enhanced by their fast saturation recovery time. Propagation delays are 250 μs. ...
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... OP281/OP481 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Pin Configurations ........................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Electrical Specifications............................................................... 3 Absolute Maximum Ratings............................................................ 6 Thermal Resistance ...................................................................... 6 ESD Caution.................................................................................. 6 Typical Performance Characteristics ............................................. 7 Applications..................................................................................... 13 REVISION HISTORY 10/07—Rev Rev. C Updated Format..................................................................Universal Changes to Offset Voltage Drift Condition .................................. 3 Changes to Slew Rate Symbol ......................................................... 5 Changes to Figure 8 ...
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... V+, −40°C ≤ PSRR −40°C ≤ −40°C ≤ T ≤ +85° 100 kΩ 20 GBP φ p-p 0 kHz Rev Page OP281/OP481 Min Typ Max 1 ≤ +85° ≤ +85°C 2.925 2.96 A ≤ +85° ±1.1 ≤ +85° < ...
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... OP281/OP481 25°C, unless otherwise noted Table 2. Parameter INPUT CHARACTERISTICS Offset Voltage 1 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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... GND, –40°C ≤ PSRR V = ±1. ±6 V, –40°C ≤ –40°C ≤ T ≤ +85° 100 kΩ GBP φ p-p 0 kHz kHz i n Rev Page OP281/OP481 Min Typ Max 0.1 1.5 2 0.1 7 –5 +4 ≤ +85° ≤ +85°C ±4.925 ±4. ≤ +85° 3 105 ...
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... OP281/OP481 ABSOLUTE MAXIMUM RATINGS Table 4. Parameter Supply Voltage Input Voltage Differential Input Voltage Output Short-Circuit Duration to GND Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature Range (Soldering, 60 sec) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only ...
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... Rev Page OP281/OP481 –40 – TEMPERATURE (°C) Figure 8. Input Bias Current vs. Temperature 1 25° 0.5 1.0 1 ...
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... OP281/OP481 10000 25°C A 1000 100 SOURCE SINK LOAD CURRENT (µA) Figure 11. Output Voltage to Supply Rail vs. Load Current 1000 25°C A 100 SOURCE SINK LOAD CURRENT (µA) Figure 12. Output Voltage to Supply Rail vs. Load Current 1000 V = ± 25°C A 100 SOURCE 10 1 0.1 ...
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... 25°C A 140 R = ∞ L 120 100 –20 –40 100k Figure 22. Small-Signal Overshoot vs. Load Capacitance Rev Page OP281/OP481 ± + +3V S 10k 100k 1M FREQUENCY (Hz) Figure 20. CMRR vs. Frequency V = ±5V, +5V, +3V, +2. 25° ∞ L 100 1k 10k 100k FREQUENCY (Hz) Figure 21. PSRR vs. Frequency ±50mV 100kΩ 25° ...
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... OP281/OP481 100 1k FREQUENCY (Hz) Figure 23. Maximum Output Swing vs. Frequency 100 1k FREQUENCY (Hz) Figure 24. Maximum Output Swing vs. Frequency 4 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 –40 – TEMPERATURE (°C) Figure 25. Supply Current/Amplifier vs. Temperature 4 p 25° ∞ L 3.5 3.0 2.5 2.0 1.5 1.0 0.5 ...
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... Figure 30. Large-Signal Transient Response V = ±1.35V 100kΩ 50pF 100 25° 500mV 100kΩ 50pF 100 25° Rev Page OP281/OP481 V = 2.75V A2 0. 100kΩ 50pF 25°C A 100µs Figure 31. Large-Signal Transient Response 2. 25° 200µs Figure 32. No Phase Reversal ...
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... OP281/OP481 V = ±1.35V ∞ L 100 500mV 500mV 50µs Figure 33. Saturation Recovery Time A2 0V 100 500mV 100µs Figure 34. Saturation Recovery Time 120 V = ±1V p-p 105 2kHz –15 –30 CIRCUIT = A VOL 25° ∞ L Rev Page 100 1k 10k 100k FREQUENCY (Hz) Figure 35. Channel Separation vs. Frequency ...
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... Notice how the output of the amplifier also drops slightly negative without distortion. 100 V 90 OUT 0.1V Figure 38. Input and Output Signals with V Rev Page OP281/OP481 3 EE 100kΩ +3V 100kΩ V 100kΩ OUT OP281 + V = 1kHz AT IN 400mV p-p 100kΩ ...
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... OP281/OP481 CAPACITIVE LOADING Most low supply current amplifiers have difficulty driving capacitive loads due to the higher currents required from the output stage for such loads. Higher capacitance at the output will increase the amount of overshoot and ringing in the amplifier’s step response and may affect the stability of the device. However, ...
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... One side of the OP281 can be used as an amplifier for the microphone, and the other side can be used to drive the speaker. A typical telephone headset uses a 600 Ω speaker and an electret microphone that requires a supply voltage and a biasing resistor. Rev Page OP281/OP481 R1 R2 100kΩ 100kΩ 2kΩ ...
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... OP281/OP481 0.1µF 11kΩ 300kΩ 2.2kΩ 1MΩ 1µF OP281-A ELECTRET 1MΩ MIC 1µF 10kΩ 50kΩ 20kΩ 3V 1µF INPUT 10kΩ OP281-B 3V POT. 1MΩ 1MΩ 20kΩ 1µF Figure 45. Two-Way Amplifier in a Battery-Powered Telephone Headset The OP281-A op amp provides about gain for audio signals coming from the microphone ...
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... COMPLIANT TO JEDEC STANDARDS MS-012-AB Figure 47. 14-Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-14) Dimensions shown in millimeters and (inches) Rev Page OP281/OP481 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° ...
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... OP481GRUZ-REEL –40°C to +85°C OP481GS –40°C to +85°C OP481GS-REEL –40°C to +85°C OP481GS-REEL7 –40°C to +85°C 1 OP481GSZ –40°C to +85°C 1 OP481GSZ-REEL –40°C to +85°C OP481GSZ-REEL7 1 –40°C to +85° RoHS Compliant Part. 3.10 3 ...
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... NOTES Rev Page OP281/OP481 ...
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... OP281/OP481 NOTES ©1996–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00291-0-10/07(C) Rev Page ...