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High-speed op amps (GBW ≥ 50 MHz)
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OPA620

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Wideband Precision Operational Amplifier

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OPA620

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Product details

Architecture FET / CMOS Input, Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 GBW (typ) (MHz) 100 BW at Acl (MHz) 250 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 200 Vn at flatband (typ) (nV√Hz) 5.5 Vn at 1 kHz (typ) (nV√Hz) 5.5 Iq per channel (typ) (mA) 5.1 Vos (offset voltage at 25°C) (max) (mV) 0.3 Rail-to-rail In, Out Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 96 Input bias current (max) (pA) 50 Offset drift (typ) (µV/°C) 1.2 Iout (typ) (mA) 100 2nd harmonic (dBc) 79 3rd harmonic (dBc) 77 Frequency of harmonic distortion measurement (MHz) 1
Architecture FET / CMOS Input, Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 GBW (typ) (MHz) 100 BW at Acl (MHz) 250 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 200 Vn at flatband (typ) (nV√Hz) 5.5 Vn at 1 kHz (typ) (nV√Hz) 5.5 Iq per channel (typ) (mA) 5.1 Vos (offset voltage at 25°C) (max) (mV) 0.3 Rail-to-rail In, Out Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 96 Input bias current (max) (pA) 50 Offset drift (typ) (µV/°C) 1.2 Iout (typ) (mA) 100 2nd harmonic (dBc) 79 3rd harmonic (dBc) 77 Frequency of harmonic distortion measurement (MHz) 1
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Unity-gain bandwidth: 250MHz
  • Wide bandwidth: 100MHz GBW
  • High precision:
    • Input offset voltage at 25℃ : ±300µV (maximum)
    • Input offset voltage (-40℃ to 125℃) : ±1mV (maximum)
    • Offset drift: 1.2µV/°C (typical)
  • High slew rate: 190V/µs
  • Low noise: 5.5nV/√Hz
  • Rail-to-rail I/O
  • High output current: > 100mA
  • Low input bias current: 3pA
  • Quiescent current: 5.1mA
  • Thermal shutdown
  • Supply range: 2.5V to 5.5V
  • Unity-gain bandwidth: 250MHz
  • Wide bandwidth: 100MHz GBW
  • High precision:
    • Input offset voltage at 25℃ : ±300µV (maximum)
    • Input offset voltage (-40℃ to 125℃) : ±1mV (maximum)
    • Offset drift: 1.2µV/°C (typical)
  • High slew rate: 190V/µs
  • Low noise: 5.5nV/√Hz
  • Rail-to-rail I/O
  • High output current: > 100mA
  • Low input bias current: 3pA
  • Quiescent current: 5.1mA
  • Thermal shutdown
  • Supply range: 2.5V to 5.5V

The single OPA620 is a high-speed, voltage-feedback operational amplifier designed for current sensing and precision applications. Offering unity-gain stability and high output current drive, the OPA620 delivers enhanced signal-chain precision across temperature, exceeding the performance of conventional wide-bandwidth CMOS amplifiers. Operating with a low quiescent current of 5.1mA per channel, the OPA620 is suitable for power-sensitive applications.

The OPA620 operates from a single or dual supply voltage ranging from 2.5V (±1.25V) to 5.5V (±2.75V). It features a wide common-mode input range extending beyond the supply rails, and delivers a rail-to-rail output swing within 30mV of the positive and negative supplies, enabling a wide dynamic range.

The OPA620 is available in a small 5-pin SOT-23 package and is specified for operation over an extended temperature range of –40°C to +125°C.

The single OPA620 is a high-speed, voltage-feedback operational amplifier designed for current sensing and precision applications. Offering unity-gain stability and high output current drive, the OPA620 delivers enhanced signal-chain precision across temperature, exceeding the performance of conventional wide-bandwidth CMOS amplifiers. Operating with a low quiescent current of 5.1mA per channel, the OPA620 is suitable for power-sensitive applications.

The OPA620 operates from a single or dual supply voltage ranging from 2.5V (±1.25V) to 5.5V (±2.75V). It features a wide common-mode input range extending beyond the supply rails, and delivers a rail-to-rail output swing within 30mV of the positive and negative supplies, enabling a wide dynamic range.

The OPA620 is available in a small 5-pin SOT-23 package and is specified for operation over an extended temperature range of –40°C to +125°C.
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Technical documentation

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Top documentation Type Title Format options Date
Application brief High Speed Current Sensing for Data Center mCRPS Standards PDF | HTML 07 Apr 2026
User guide DEM-OPA-SO-1A User's Guide (Rev. B) 12 Apr 2012
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005
Application note Increasing ADC603 Input Range 27 Sep 2000

Design & development

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Evaluation board

DEM-OPA-SOT-1A — Single operational amplifier evaluation module for SOT-23 5-pin and 6-pin packages

DEM-OPA-SOT-1A is a demonstration board that evaluates the operation and performance of high-speed, wide-bandwidth operational amplifiers. This unpopulated PC board is compatible with products offered in the small-outline transistor (SOT) DBV package.

User guide: PDF
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Simulation model

OPA620 PSpice Model

SBOM095.ZIP (4 KB) - PSpice Model
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Simulation model

OPA620 TINA-TI Reference Design

SBOMCU0.TSC (30 KB) - TINA-TI Reference Design
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Calculation tool

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

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VOLT-DIVIDER-CALC — Voltage divider calculation tool

The voltage divider calculation tool (VOLT-DIVIDER-CALC) quickly determines a set of resistors for a voltage divider. This KnowledgeBase JavaScript utility can be used to find a set of resistors for a voltage divider to achieve the desired output voltage. VOLT-DIVIDER-CALC can also be used to (...)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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