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OPA2991IDSGR Datasheet(PDF) 1 Page - Texas Instruments |
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OPA2991IDSGR Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 78 page  OPAx991 40-V Rail-to-Rail Input/Output, Low Offset Voltage, Low Noise Op Amp 1 Features • Low offset voltage: ±125 µV • Low offset voltage drift: ±0.3 µV/°C • Low noise: 10.8 nV/√Hz at 1 kHz • High common-mode rejection: 130 dB • Low bias current: ±10 pA • Rail-to-rail input and output • Wide bandwidth: 4.5 MHz GBW • High slew rate: 21 V/µs • High capacitive load drive: 1 nF • MUX-friendly/comparator inputs – Amplifier operates with differential inputs up to supply rail – Amplifier can be used in open-loop or as comparator • Low quiescent current: 560 µA per amplifier • Wide supply: ±1.35 V to ±20 V, 2.7 V to 40 V • Robust EMIRR performance: EMI/RFI filters on input and supply pins • Differential and common-mode input voltage range to supply rail 2 Applications • Low-power audio preamplifier • Multiplexed data-acquisition systems • Test and measurement equipment • ADC driver amplifiers • SAR ADC reference buffers • Programmable logic controllers • High-side and low-side current sensing 3 Description The OPAx991 family (OPA991, OPA2991, and OPA4991) is a family of high voltage (40 V) general purpose operational amplifiers. These devices offer exceptional DC precision and AC performance, including rail-to-rail input/output, low offset (±125 µV, typical), low offset drift (±0.3 µV/°C, typical), low noise (10.5 nV/√Hz and 1.8 µVPP), and 4.5-MHz bandwidth. Unique features such as differential and common- mode input-voltage range to the supply rail, high output current (±75 mA), high slew rate (21 V/µs), high capacitive load drive (1 nF), and shutdown functionality make the OPAx991 a robust, high- performance operational amplifier for high-voltage industrial applications. The OPAx991 family of op amps is available in micro- size packages (such as X2QFN and WSON), as well as standard packages (such as SOT-23, SOIC, and TSSOP), and is specified from –40°C to 125°C. Device Information PART NUMBER (1) PACKAGE BODY SIZE (NOM) OPA991 SOT-23 (5) 2.90 mm × 1.60 mm SOT-23 (6) 2.90 mm × 1.60 mm SC70 (5) 2.00 mm × 1.25 mm OPA2991 SOIC (8) 4.90 mm × 3.90 mm SOT-23 (8) 2.90 mm × 1.60 mm TSSOP (8) 3.00 mm × 4.40 mm VSSOP (8) 3.00 mm × 3.00 mm WSON (8) 2.00 mm × 2.00 mm X2QFN (10) 2.00 mm × 1.50 mm OPA4991 SOIC (14) 8.65 mm × 3.90 mm SOT-23 (14) 4.20 mm × 1.90 mm TSSOP (14) 5.00 mm × 4.40 mm X2QFN (14) 2.00 mm × 2.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. ADS8860 REF VINP VINM MUX509 + + + Antialiasing Filter Gain Network Gain Network Gain Network High-Voltage Level Translation VCM High-Voltage Multiplexed Input Reference Driver REF3140 RC Filter OPA375 RC Filter Analog Inputs LED Photo Detector Bridge Sensor Thermocouple Current Sensing Optical Sensor OPA991 OPA991 OPA991 OPAx991 in a High-Voltage, Multiplexed, Data-Acquisition System OPA991, OPA2991, OPA4991 SBOS969F – OCTOBER 2019 – REVISED JANUARY 2022 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. |
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