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OPA2191 Datasheet Preview

OPA2191 Datasheet

Low Input Bias Current Op Amp

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OPA191, OPA2191, OPA4191
SBOS701B – DECEMEBER 2015 – REVISED JULY 2019
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, TSSOP-14, and WQFN-16
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
SOIC (14)
8.65 mm x 3.90 mm
OPA4191
TSSOP (14)
WQFN (16)
(preview)
5.00 mm x 4.40 mm
4.00 mm x 4.00 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.




etcTI

OPA2191 Datasheet Preview

OPA2191 Datasheet

Low Input Bias Current Op Amp

No Preview Available !

OPA191, OPA2191, OPA4191
SBOS701B – DECEMEBER 2015 – REVISED JULY 2019
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 5
6.1 Absolute Maximum Ratings ...................................... 5
6.2 ESD Ratings.............................................................. 5
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information: OPA191 .................................. 6
6.5 Thermal Information: OPA2191 ................................ 6
6.6 Thermal Information: OPA4191 ................................ 6
6.7 Electrical Characteristics: VS = ±4 V to ±18 V (VS = 8
V to 36 V) ................................................................... 7
6.8 Electrical Characteristics: VS = ±2.25 V to ±4 V (VS =
4.5 V to 8 V)............................................................... 9
6.9 Typical Characteristics ............................................ 11
7 Parameter Measurement Information ................ 20
7.1 Input Offset Voltage Drift......................................... 20
8 Detailed Description ............................................ 22
8.1 Overview ................................................................. 22
8.2 Functional Block Diagram ....................................... 22
8.3 Feature Description................................................. 23
8.4 Device Functional Modes........................................ 30
9 Application and Implementation ........................ 31
9.1 Application Information............................................ 31
9.2 Typical Applications ................................................ 31
10 Power Supply Recommendations ..................... 35
11 Layout................................................................... 35
11.1 Layout Guidelines ................................................. 35
11.2 Layout Example .................................................... 36
12 Device and Documentation Support ................. 37
12.1 Device Support...................................................... 37
12.2 Documentation Support ........................................ 37
12.3 Related Links ........................................................ 37
12.4 Community Resources.......................................... 37
12.5 Trademarks ........................................................... 38
12.6 Electrostatic Discharge Caution ............................ 38
12.7 Glossary ................................................................ 38
13 Mechanical, Packaging, and Orderable
Information ........................................................... 38
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (April 2016) to Revision B
Page
• Added advanced information (preview) 16-pin RUM (WQFN) package and associated content to data sheet ................... 1
• Changed Figure 32 condition from G = –1 to G = 1............................................................................................................. 17
• Changed Figure 33 condition from G = 1 to G = –1 ............................................................................................................ 17
Changes from Original (December 2015) to Revision A
Page
• Changed DBV and DGK packages from product preview to production data ....................................................................... 1
• Added input offset voltage drift values for DBV and DGK packages to both electrical characteristics tables ....................... 5
• Added crosstalk values to both electrical characteristics tables............................................................................................. 5
• Changed Figure 23, 0.1-Hz to 10-Hz Noise ......................................................................................................................... 15
• Added text regarding capacitive load drive to the Capacitive Load and Stability section .................................................... 26
• Added Figure 56 .................................................................................................................................................................. 26
2 Submit Documentation Feedback
Copyright © 2015–2019, Texas Instruments Incorporated
Product Folder Links: OPA191 OPA2191 OPA4191


Part Number OPA2191
Description Low Input Bias Current Op Amp
Maker etcTI
Total Page 30 Pages
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