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OP491GRU

更新时间： 2024-11-22 23:24:23
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20页 349K
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OP-AMP|QUAD|BICMOS|TSSOP|14PIN|PLASTIC

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OP491GRU 数据手册

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Micropower Single-Supply  
Rail-to-Rail Input/Output Op Amps  
a
OP191/OP291/OP491  
FEATURES  
Single-Supply Operation: 2.7 V to 12 V  
Wide Input Voltage Range  
Rail-to-Rail Output Swing  
Low Supply Current: 300 ␮A/Amp  
Wide Bandwidth: 3 MHz  
Slew Rate: 0.5 V/␮s  
PIN CONFIGURATIONS  
8-Lead Narrow-Body SO  
8-Lead Narrow-Body SO  
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
Low Offset Voltage: 700 ␮V  
No Phase Reversal  
OP191  
OP291  
APPLICATIONS  
Industrial Process Control  
Battery-Powered Instrumentation  
Power Supply Control and Protection  
Telecom  
8-Lead Plastic DIP  
14-Lead Plastic DIP  
Remote Sensors  
Low-Voltage Strain Gage Amplifiers  
DAC Output Amplifier  
+V  
1
2
3
4
5
6
7
1
2
3
4
8
7
6
5
14  
13  
12  
OUTA  
–INA  
+INA  
–V  
OUTA  
–INA  
+INA  
+V  
OUTD  
–IND  
+IND  
OP291  
OUTB  
–INB  
+INB  
GENERAL DESCRIPTION  
11 –V  
OP491  
The OP191, OP291, and OP491 are single, dual and quad  
micropower, single-supply, 3 MHz bandwidth amplifiers fea-  
turing rail-to-rail inputs and outputs. All are guaranteed to  
operate from a 3 V single supply as well as 5 V dual supplies.  
10 +INC  
+INB  
–INB  
OUTB  
9
8
–INC  
OUTC  
Fabricated on Analog Devices’ CBCMOS process, the OP191  
family has a unique input stage that allows the input voltage to  
safely extend 10 V beyond either supply without any phase inver-  
sion or latch-up. The output voltage swings to within millivolts  
of the supplies and continues to sink or source current all the  
way to the supplies.  
14-Lead SO  
14-Lead TSSOP  
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
1
2
3
4
5
6
7
14  
OUTD  
OUTA  
–INA  
+INA  
+V  
Applications for these amplifiers include portable telecom  
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.  
13 –IND  
12 +IND  
11 –V  
OP491  
OP491  
10  
9
+INC  
–INC  
OUTC  
+INB  
–INB  
OUTB  
8
8
The ability to swing rail-to-rail at both the input and output  
enables designers to build multistage filters in single-supply  
systems and maintain high signal-to-noise ratios.  
The OP191/OP291/OP491 are specified over the extended  
industrial (–40°C to +125°C) temperature range. The OP191  
single and OP291 dual amplifiers are available in 8-lead plastic  
SO surface mount packages*. The OP491 quad is available in  
14-lead DIPs and narrow 14-lead SO packages. Consult factory  
for OP491 TSSOP availability.  
*
The OP291 dual is also available in 8-lead Plastic Dip.  
REV. A  
Information furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assumed by Analog Devices for its  
use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
may result from its use. No license is granted by implication or otherwise  
under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
www.analog.com  
© Analog Devices, Inc., 2002  
1234567...20

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