OPA191_017 Datasheet, PDF (1/51 Pages) Texas Instruments – 36-V, Low Power, Precision, CMOS, Rail-to-Rail Input/Output, Low Offset Voltage, Low Input Bias Current Op Amp

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OPA191, OPA2191, OPA4191
SBOS701A – DECEMEBER 2015 – REVISED APRIL 2016
OPAx191 36-V, Low Power, Precision, CMOS, Rail-to-Rail Input/Output,
Low Offset Voltage, Low Input Bias Current Op Amp
1 Features
•1 Low Offset Voltage: ±5 µV
• Low Offset Voltage Drift: ±0.1 µV/°C
• Low Noise: 15 nV/√Hz at 1 kHz
• High Common-Mode Rejection: 140 dB
• Low Bias Current: ±5 pA
• Rail-to-Rail Input and Output
• Wide Bandwidth: 2.5-MHz GBW
• High Slew Rate: 5 V/µs
• Low Quiescent Current: 140 µA per Amplifier
• Wide Supply: ±2.25 V to ±18 V, 4.5 V to 36 V
• EMI/RFI Filtered Inputs
• Differential Input Voltage Range to Supply Rail
• High Capacitive Load Drive Capability: 1 nF
• Industry Standard Packages:
– Single in SOIC-8, SOT-5, and VSSOP-8
– Dual in SOIC-8 and VSSOP-8
– Quad in SOIC-14 and TSSOP-14
2 Applications
• Multiplexed Data-Acquisition Systems
• Test and Measurement Equipment
• High-Resolution ADC Driver Amplifiers
• SAR ADC Reference Buffers
• Programmable Logic Controllers
• High-Side and Low-Side Current Sensing
• High Precision Comparator
3 Description
The OPAx191 family (OPA191, OPA2191, and
OPA4191) is a new generation of 36-V, e-trim
operational amplifiers.
These devices offer outstanding dc precision and ac
performance, including rail-to-rail input/output, low
offset voltage (±5 µV, typ), low offset drift (±0.2
µV/°C, typ), and 2-MHz bandwidth.
Unique features, such as differential input-voltage
range to the supply rail, high output current (±65 mA),
high capacitive load drive of up to 1 nF, and high
slew rate (5 V/µs), make the OPAx191 a robust, high-
performance operational amplifier for high-voltage
industrial applications.
The OPAx191 family of op amps is available in
standard packages and is specified from –40°C to
+125°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SOIC (8)
4.90 mm × 3.90 mm
OPA191
SOT (5)
2.90 mm × 1.60 mm
VSSOP (8)
3.00 mm × 3.00 mm
OPA2191
SOIC (8)
VSSOP (8)
4.90 mm × 3.90 mm
3.00 mm × 3.00 mm
OPA4191
SOIC (14)
TSSOP (14)
8.65 mm x 3.90 mm
5.00 mm x 4.40 mm
(1) For all available packages, see the package option addendum
at the end of the data sheet.
Analog Inputs
Bridge Sensor
Thermocouple
Current Sensing
Optical Sensor
OPA191 in a High-Voltage, Multiplexed, Data-Acquisition System
4:2
HV MUX
OPA191
+
+
OPA191
Gain
Gain
Gain
OPA191
+
High-Voltage Multiplexed Input
High-Voltage Level Translation
VCM
REF3140
RC Filter
OPA625
Reference Driver
RC Filter
Antialiasing
Filter
VIN
REF
P
ADS8864
VIN
M
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION
DATA.