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OPA4191 Dataheets PDF



Part Number OPA4191
Manufacturers Texas Instruments
Logo Texas Instruments
Description Low Input Bias Current Op Amp
Datasheet OPA4191 DatasheetOPA4191 Datasheet (PDF)

Product Folder Order Now Technical Documents Tools & Software Support & Community 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.

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Product Folder Order Now Technical Documents Tools & Software Support & Community 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, highperformance 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 + Gain 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. 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 .........


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