Design tool
Data sheet
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OPA171
- 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.
Technical documentation
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View all 11 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | OPAx171 36-V, Single-Supply, SOT-553, General-Purpose Operational Amplifiers datasheet (Rev. G) | PDF | HTML | 22 May 2020 |
| Application note | Using An Op Amp for High-Side Current Sensing (Rev. A) | PDF | HTML | 07 Dec 2021 | |
| Technical article | What is an op amp? | 21 Jan 2020 | ||
| Circuit design | Noninverting amplifier circuit (Rev. A) | PDF | HTML | 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 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
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Simulation tool
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Reference designs
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| Package | Pins | Download |
|---|---|---|
| SOIC (D) | 8 | View options |
| SOT-23 (DBV) | 5 | View options |
| SOT-5X3 (DRL) | 5 | View options |
Ordering & quality
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