Alternative Parts
Overview
Features and Benefits
- Low offset voltage: 60 μV maximum
- Very low offset voltage drift: 0.7 μV/°C maximum
- Low input bias current: 2 nA maximum
- Low noise: 8 nV/√Hz typical
- CMRR, PSRR, and AVO > 120 dB minimum
- Low supply current: 400 μA per amplifier
- Dual supply operation: ±2.5 V to ±15 V
- Unity-gain stable
- No phase reversal
- Inputs internally protected beyond supply voltage
Product Details
The OPx177 family consists of very high precision, single, dual, and quad amplifiers featuring extremely low offset voltage and drift, low input bias current, low noise, and low power consump-tion. Outputs are stable with capacitive loads of over 1000 pF with no external compensation. Supply current is less than 500 μA per amplifier at 30 V. Internal 500 Ω series resistors protect the inputs, allowing input signal levels several volts beyond either supply without phase reversal.Unlike previous high voltage amplifiers with very low offset voltages, the OP1177 (single) and OP2177 (dual) amplifiers are available in tiny 8-lead surface-mount MSOP and 8-lead narrow SOIC packages. The OP4177 (quad) is available in TSSOP and 14-lead narrow SOIC packages. Moreover, specified performance in the MSOP and the TSSOP is identical to performance in the SOIC package. MSOP and TSSOP are available in tape and reel only.
The OPx177 family offers the widest specified temperature range of any high precision amplifier in surface-mount packaging. All versions are fully specified for operation from −40°C to +125°C for the most demanding operating environments.
Applications for these amplifiers include precision diode power measurement, voltage and current level setting, and level detection in optical and wireless transmission systems. Additional applications include line-powered and portable instrumentation and controls—thermocouple, RTD, strain-bridge, and other sensor signal conditioning—and precision filters.
Applications
- Wireless base station control circuits
- Optical network control circuits
- Instrumentation
- Sensors and controls
- Thermocouples
- Resistor thermal detectors (RTDs)
- Strain bridges
- Shunt current measurements
- Precision filters
Product Categories
Markets and Technologies
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
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AN-256: Accurately Testing Op Amp Settling Times2/14/2015PDF106 kB
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AN-1313: Configuring the AD5422 to Combine Output Current and Output Voltage to a Single Output Pin (Rev. 0)2/14/2015PDF413 kB
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AN-358: Noise and Operational Amplifier Circuits2/14/2015PDF593 kB
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AN-579: Versatile Programmable Amplifiers Using Digital Potentiometers with Nonvolatile Memory (Rev. 0)8/18/2003PDF90 kB
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CN0305: A 16-Bit, 300 kSPS Low Power Successive Approximation ADC System with Optimum Low Power Drive Amplifier for Sub-Nyquist Input Signals Up to 4 kHz12/29/2013PDF271 kB
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CN-0151: Versatile High Precision Programmable Current Sources Using DACs, Op Amps, and MOSFET Transistors11/16/2010PDF234 kB
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CN-0169: How to Achieve High Precision Voltage Level Setting Using the AD5542A/AD5541A 16-Bit Voltage Output DAC9/27/2010PDF457 kB
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Versatile, Precision Single-Ended-to-Differential Signal Conversion Circuit with Adjustable Output Common Mode Boosts System Dynamic Range11/1/2015 Analog Dialogue
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Designing DACS into Precision Industrial 10V Applications5/1/2015
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Versatile, Low-Power, Precision Single-Ended-to-Differential Converter10/1/2012 Analog Dialogue
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Difference Amplifier Forms Heart of Precision Current Source9/1/2009 Analog Dialogue
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High-Performance Multichannel Power-Line Monitoring with Simultaneous-Sampling ADCs1/1/2007 Analog Dialogue
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Precision Signal-Processing and Data-Conversion ICs for PLCs Now Have More Performance at Less Power, Size, and Cost8/1/2006 Analog Dialogue
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Ask The Application Engineer—32: Practical Techniques to Avoid Instability Due to Capacitive Loading6/1/2004 Analog Dialogue
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Versatile Programmable Amplifiers Use Digital Potentiometers with Nonvolatile Memory6/1/2001 Analog Dialogue
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Models for the following parts are available in LTspice:
SPICE Models
Design Tools
An online tool to illustrate range, gain and accuracy issues with Op Amp.
Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.
Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Select a photodiode from the library included in the tool, or enter custom photodiode specifications. Quickly observe tradeoffs between Bandwidth, Peaking (Q), and ENOB/SNR. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.
Reference Designs (3)
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
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OP1177ARMZ | Material Declaration | Reliability Data | 8-Lead MSOP | |
OP1177ARMZ-R7 | Material Declaration | Reliability Data | 8-Lead MSOP | |
OP1177ARMZ-REEL | Material Declaration | Reliability Data | 8-Lead MSOP | |
OP1177ARZ | Material Declaration | Reliability Data | 8-Lead SOIC | |
OP1177ARZ-REEL | Material Declaration | Reliability Data | 8-Lead SOIC | |
OP1177ARZ-REEL7 | Material Declaration | Reliability Data | 8-Lead SOIC | |
Wafer Fabrication Data |
PCN-PDN Information
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Support & Discussions
OP1177 Discussions
Sample & Buy
Ordering FAQs
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Buy Now Pricing
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List Pricing
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Lead Times
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Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.