Product details

Architecture Voltage FB Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 7 Total supply voltage (Max) (+5V=5, +/-5V=10) 12 GBW (Typ) (MHz) 200 BW @ Acl (MHz) 350 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 400 Vn at flatband (Typ) (nV/rtHz) 2.7 Vn at 1 kHz (Typ) (nV/rtHz) 2.6 Iq per channel (Typ) (mA) 20.2 Vos (offset voltage @ 25 C) (Max) (mV) 1.2 Rail-to-rail No Rating Catalog Operating temperature range (C) -40 to 85 CMRR (Typ) (dB) 95 Input bias current (Max) (pA) 35000000 Offset drift (Typ) (uV/C) 4 Output current (Typ) (mA) 100 2nd harmonic (dBc) 80 3rd harmonic (dBc) 97 @ MHz 5
Architecture Voltage FB Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 7 Total supply voltage (Max) (+5V=5, +/-5V=10) 12 GBW (Typ) (MHz) 200 BW @ Acl (MHz) 350 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 400 Vn at flatband (Typ) (nV/rtHz) 2.7 Vn at 1 kHz (Typ) (nV/rtHz) 2.6 Iq per channel (Typ) (mA) 20.2 Vos (offset voltage @ 25 C) (Max) (mV) 1.2 Rail-to-rail No Rating Catalog Operating temperature range (C) -40 to 85 CMRR (Typ) (dB) 95 Input bias current (Max) (pA) 35000000 Offset drift (Typ) (uV/C) 4 Output current (Typ) (mA) 100 2nd harmonic (dBc) 80 3rd harmonic (dBc) 97 @ MHz 5
SOIC (D) 8 19 mm² 3.91 x 4.9 SOT-23 (DBV) 5 5 mm² 2.9 x 1.6
  • UNITY-GAIN BANDWIDTH: 400MHz
  • GAIN-BANDWIDTH PRODUCT: 200MHz
  • LOW INPUT VOLTAGE NOISE: 2.6nV/√Hz
  • VERY LOW DISTORTION: –93dBc (5MHz)
  • HIGH OPEN-LOOP GAIN: 110dB
  • FAST 12-BIT SETTLING: 22ns (0.01%)
  • LOW DC VOLTAGE OFFSET: 300µV Typical
  • PROFESSIONAL LEVEL DIFF GAIN/PHASE ERROR: 0.003%/0.008°
  • UNITY-GAIN BANDWIDTH: 400MHz
  • GAIN-BANDWIDTH PRODUCT: 200MHz
  • LOW INPUT VOLTAGE NOISE: 2.6nV/√Hz
  • VERY LOW DISTORTION: –93dBc (5MHz)
  • HIGH OPEN-LOOP GAIN: 110dB
  • FAST 12-BIT SETTLING: 22ns (0.01%)
  • LOW DC VOLTAGE OFFSET: 300µV Typical
  • PROFESSIONAL LEVEL DIFF GAIN/PHASE ERROR: 0.003%/0.008°

The OPA842 provides a level of speed and dynamic range previously unattainable in a monolithic op amp. Using unity-gain stable, voltage-feedback architecture with two internal gain stages, the OPA842 achieves exceptionally low harmonic distortion over a wide frequency range. The classic differential input provides all the familiar benefits of precision op amps, such as bias current cancellation and very low inverting current noise compared with wideband current differential gain/phase performance, low-voltage noise, and high output current drive make the OPA842 ideal for most high dynamic range applications.

Unity-gain stability makes the OPA842 particularly suitable for low-gain differential amplifiers, transimpedance amplifiers, gain of +2 video line drivers, wideband integrators, and low-distortion analog-to-digital converter (ADC) buffers. Where higher gain or even lower harmonic distortion is required, consider the OPA843—a higher-gain bandwidth and lower-noise version of the OPA842.

The OPA842 provides a level of speed and dynamic range previously unattainable in a monolithic op amp. Using unity-gain stable, voltage-feedback architecture with two internal gain stages, the OPA842 achieves exceptionally low harmonic distortion over a wide frequency range. The classic differential input provides all the familiar benefits of precision op amps, such as bias current cancellation and very low inverting current noise compared with wideband current differential gain/phase performance, low-voltage noise, and high output current drive make the OPA842 ideal for most high dynamic range applications.

Unity-gain stability makes the OPA842 particularly suitable for low-gain differential amplifiers, transimpedance amplifiers, gain of +2 video line drivers, wideband integrators, and low-distortion analog-to-digital converter (ADC) buffers. Where higher gain or even lower harmonic distortion is required, consider the OPA843—a higher-gain bandwidth and lower-noise version of the OPA842.

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Technical documentation

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Type Title Date
* Data sheet Wideband Low Distortion Unity-Gain Stable Voltage-Feedback Op Amp datasheet (Rev. D) 28 Sep 2010
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note RLC Filter Design for ADC Interface Applications (Rev. A) 13 May 2015
Application note Wideband Complementary Current Output DAC Single-Ended Interface (Rev. A) 08 May 2015
Technical article Preventing output polarity inversion in high-speed amplifiers 26 Nov 2014
User guide DEM-OPA-SO-1A User's Guide (Rev. B) 12 Apr 2012
User guide DEM-OPA-SOT-1A User's Guide (Rev. B) 12 Apr 2012
User guide DEM-OPA-SOT-1A User's Guide (Rev. A) 22 Mar 2006
User guide DEM-OPA-SO-1A User's Guide (Rev. A) 16 Mar 2006
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005
Application note ADS5500, OPA695: PC Board Layout for Low Distortion High-Speed ADC Drivers 22 Apr 2004
Application note Measuring Board Parasitics in High-Speed Analog Design 07 Jul 2003

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

DEM-OPA-SO-1A — Single op-amp evaluation module for SO-8 package

The DEM-OPA-SO-1A demonstration fixture helps designers evaluate the operation and performance of TI's High Speed, Wide Bandwidth Operational Amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.

Evaluation board

DEM-OPA-SOT-1A — Single op amp evaluation module for SOT23-5/6 package

The DEM-OPA-SOT-1A is a demonstration fixture that helps designers evaluate the operation and performance of TI's High Speed, Wide Bandwidth Operational Amplifiers. This unpopulated PC board is compatible with products offered in the SOT(DBV) package.

Simulation model

OPA842 PSpice Model

SBOC007.ZIP (1 KB) - PSpice Model
Simulation model

OPA842 TINA-TI Reference Design (Rev. A)

SBOC095A.TSC (55 KB) - TINA-TI Reference Design
Simulation model

OPA842 TINA-TI Spice Model

SBOM177.TSM (4 KB) - TINA-TI Spice Model
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 (...)
Simulation tool

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 (...)
Calculation tool

ANALOG-ENGINEER-CALC — 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 op-amp gain with feedback (...)
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Calculation tool

VOLT-DIVIDER-CALC — Voltage Divider Determines A Set of Resistors for a Voltage Divider

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. This calculator can also be used to design non-inverting attentuation circuits.

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Package Pins Download
SOIC (D) 8 View options
SOT-23 (DBV) 5 View options

Ordering & quality

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Support & training

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