Datasheet OP191, OP291, OP491 (Analog Devices)

Micropower Single-Supply Rail-to-Rail Input/Output Op Amps OP191/OP291/OP491 FEATURES PIN CONFIGURATIONS Single-supply operation: 2.7 V to 12 V NC 1 8 NC OUTA 1 8 +V Wide input voltage range –INA 2 7 +V –INA 2 7 OUTB Rail-to-rail output swing OP191 OP291 +INA 3 6 OUTA +INA 3 6 –INB
2
Low supply current: 300 μA/amp –V 4 5 NC –V 4 5 +INB
-00 01 94 0 02
Wide bandwidth: 3 MHz
4- 0 29
NC = NO CONNECT
00
Slew rate: 0.5 V/μs Low offset voltage: 700 μV
Figure 1. 8-Lead Narrow-Body SOIC Figure 2. 8-Lead Narrow-Body SOIC
No phase reversal OUTA 1 14 OUTD OUTA 1 14 OUTD –INA 2 13 –IND APPLICATIONS –INA 2 - 13 –IND +INA + + - 3 12 +IND +INA 3 12 +IND Industrial process control +V 4 OP491 11 –V +V 4 OP491 11 –V +INB 10 +INC Battery-powered instrumentation 5 +INB 5 10 +INC –INB 6 9 –INC Power supply control and protection - + + -
03 0
–INB 6 9 –INC OUTB 7 8 OUTC
4- 04 0
Telecommunications
29
OUTB 7 8 OUTC
00 4- 029 0
Remote sensors Low voltage strain gage amplifiers
Figure 3. 14-Lead Narrow-Body SOIC Figure 4. 14-Lead PDIP
DAC output amplifiers OUTA 1 14 OUTD –INA 2 13 –IND +INA 3 12 +IND +V 4 OP491 11 –V +INB 5 10 +INC –INB 6 9 –INC
05 0
OUTB 7 8 OUTC
4- 29 00 Figure 5. 14-Lead TSSOP
GENERAL DESCRIPTION
The OP191, OP291, and OP491 are single, dual, and quad The ability to swing rail-to-rail at both the input and output micropower, single-supply, 3 MHz bandwidth amplifiers enables designers to build multistage filters in single-supply featuring rail-to-rail inputs and outputs. All are guaranteed to systems and to maintain high signal-to-noise ratios. operate from a +3 V single supply as well as ±5 V dual supplies. The OP191/OP291/OP491 are specified over the extended Fabricated on Analog Devices CBCMOS process, the OPx91 industrial –40°C to +125°C temperature range. The OP191 family has a unique input stage that allows the input voltage to single and OP291 dual amplifiers are available in 8-lead plastic safely extend 10 V beyond either supply without any phase SOIC surface-mount packages. The OP491 quad is available in a inversion or latch-up. The output voltage swings to within 14-lead PDIP, a narrow 14-lead SOIC package, and a 14-lead millivolts of the supplies and continues to sink or source TSSOP. current all the way to the supplies. Applications for these amplifiers include portable tele- communications equipment, power supply control and protection, and interface for transducers with wide output ranges. Sensors requiring a rail-to-rail input amplifier include Hall effect, piezo electric, and resistive transducers.
Rev. E 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. 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. Tel: 781.329.4700 www.analog.com Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 ©1994–2010 Analog Devices, Inc. All rights reserved.
Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION PIN CONFIGURATIONS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ELECTRICAL SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION INPUT OVERVOLTAGE PROTECTION OUTPUT VOLTAGE PHASE REVERSAL OVERDRIVE RECOVERY APPLICATIONS INFORMATION SINGLE 3 V SUPPLY, INSTRUMENTATION AMPLIFIER SINGLE-SUPPLY RTD AMPLIFIER A 2.5 V REFERENCE FROM A 3 V SUPPLY 5 V ONLY, 12-BIT DAC SWINGS RAIL-TO-RAIL A HIGH-SIDE CURRENT MONITOR A 3 V, COLD JUNCTION COMPENSATED THERMOCOUPLE AMPLIFIER SINGLE-SUPPLY, DIRECT ACCESS ARRANGEMENT FOR MODEMS 3 V, 50 HZ/60 HZ ACTIVE NOTCH FILTER WITH FALSE GROUND SINGLE-SUPPLY, HALF-WAVE, AND FULL-WAVE RECTIFIERS OUTLINE DIMENSIONS ORDERING GUIDE