OPA171

SOIC (D)

8

19 mm² 4.9 x 3.9

SOT-23 (DBV)

5

5 mm² 2.9 x 1.6

SOT-5X3 (DRL)

5

2 mm² 1.65 x 1.2

Supply range: 2.7 to 36 V, ±1.35 V to ±18 V
Low noise: 14 nV/√Hz
Low offset drift: ±0.3 µV/°C (typical)
RFI filtered inputs
Input range includes the negative supply
Input range operates to positive supply
Rail-to-rail output
Gain bandwidth: 3 MHz
Low quiescent current: 475 µA per amplifier
High common-mode rejection: 120 dB (typical)
Low-input bias current: 8 pA
Industry-standard packages:
- 8-pin SOIC
- 8-pin MSOP
- 14-pin TSSOP
Micro packages:
- Single in SOT-553
- Dual in VSSOP-8

Supply range: 2.7 to 36 V, ±1.35 V to ±18 V
Low noise: 14 nV/√Hz
Low offset drift: ±0.3 µV/°C (typical)
RFI filtered inputs
Input range includes the negative supply
Input range operates to positive supply
Rail-to-rail output
Gain bandwidth: 3 MHz
Low quiescent current: 475 µA per amplifier
High common-mode rejection: 120 dB (typical)
Low-input bias current: 8 pA
Industry-standard packages:
- 8-pin SOIC
- 8-pin MSOP
- 14-pin TSSOP
Micro packages:
- Single in SOT-553
- Dual in VSSOP-8

The OPA171, OPA2171, and OPA4171 (OPAx171) are a family of 36-V, single-supply, low-noise operational amplifiers with the ability to operate on supplies ranging from 2.7 V (±1.35 V) to 36 V (±18 V). These devices are available in micro-packages and offer low offset, drift, and bandwidth with low quiescent current. The single, dual, and quad versions all have identical specifications for maximum design flexibility.

Unlike most operational amplifiers, which are specified at only one supply voltage, the OPAx171 family is specified from 2.7 to 36 V. Input signals beyond the supply rails do not cause phase reversal. The OPAx171 family is stable with capacitive loads up to 300 pF. The input can operate 100 mV below the negative rail and within 2 V of the top rail during normal operation. These devices can operate with full rail-to-rail input 100 mV beyond the top rail, but with reduced performance within 2 V of the top rail.

The OPAx171 series of operational amplifiers are specified from –40°C to +125°C.

The OPA171, OPA2171, and OPA4171 (OPAx171) are a family of 36-V, single-supply, low-noise operational amplifiers with the ability to operate on supplies ranging from 2.7 V (±1.35 V) to 36 V (±18 V). These devices are available in micro-packages and offer low offset, drift, and bandwidth with low quiescent current. The single, dual, and quad versions all have identical specifications for maximum design flexibility.

Unlike most operational amplifiers, which are specified at only one supply voltage, the OPAx171 family is specified from 2.7 to 36 V. Input signals beyond the supply rails do not cause phase reversal. The OPAx171 family is stable with capacitive loads up to 300 pF. The input can operate 100 mV below the negative rail and within 2 V of the top rail during normal operation. These devices can operate with full rail-to-rail input 100 mV beyond the top rail, but with reduced performance within 2 V of the top rail.

The OPAx171 series of operational amplifiers are specified from –40°C to +125°C.

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Single, 40-V, 4.5-MHz, low-power operational amplifier Pin-to-pin upgrade with improved performance: lower Vos(0.75mV) and noise(10nV/√Hz), higher slew rate(21V/us) and output current(75mA)

Technical documentation

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	Type	Title	Date
*	Data sheet	OPAx171 36-V, Single-Supply, SOT-553, General-Purpose Operational Amplifiers datasheet (Rev. G)	22 May 2020
	Technical article	What is an op amp?	21 Jan 2020
	Application note	Using An Op Amp for High-Side Current Sensing	22 Mar 2019
	Application note	Non-inverting amplifier circuit (Rev. A)	31 Jan 2019
	Technical article	How to lay out a PCB for high-performance, low-side current-sensing designs	06 Feb 2018
	Technical article	Low-side current sensing for high-performance cost-sensitive applications	22 Jan 2018
	Technical article	Voltage and current sensing in HEV/EV applications	22 Nov 2017
	E-book	The Signal e-book: A compendium of blog posts on op amp design topics	28 Mar 2017
	Application note	OPA171 EMI Immunity Performance	29 Mar 2016
	More literature	Precision Amplifier Quickstart Kit brochure (Rev. A)	13 Jan 2015
	Application note	Compensate Transimpedance Amplifiers Intuitively (Rev. A)	30 Mar 2005

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