Product details

Architecture Voltage FB Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 8 Total supply voltage (Max) (+5V=5, +/-5V=10) 12 GBW (Typ) (MHz) 800 BW @ Acl (MHz) 500 Acl, min spec gain (V/V) 3 Slew rate (Typ) (V/us) 1000 Vn at flatband (Typ) (nV/rtHz) 2 Vn at 1 kHz (Typ) (nV/rtHz) 2 Iq per channel (Typ) (mA) 20.2 Vos (offset voltage @ 25 C) (Max) (mV) 1.2 Rail-to-rail No Features Decompensated 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) 76 3rd harmonic (dBc) 102 @ MHz 5
Architecture Voltage FB Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 8 Total supply voltage (Max) (+5V=5, +/-5V=10) 12 GBW (Typ) (MHz) 800 BW @ Acl (MHz) 500 Acl, min spec gain (V/V) 3 Slew rate (Typ) (V/us) 1000 Vn at flatband (Typ) (nV/rtHz) 2 Vn at 1 kHz (Typ) (nV/rtHz) 2 Iq per channel (Typ) (mA) 20.2 Vos (offset voltage @ 25 C) (Max) (mV) 1.2 Rail-to-rail No Features Decompensated 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) 76 3rd harmonic (dBc) 102 @ MHz 5
SOIC (D) 8 19 mm² 3.91 x 4.9 SOT-23 (DBV) 5 5 mm² 2.9 x 1.6
  • HIGH BANDWIDTH: 260MHz (G = +5)
  • GAIN BANDWIDTH PRODUCT: 800MHz
  • LOW INPUT VOLTAGE NOISE: 2.0nV/√Hz
  • VERY LOW DISTORTION: –96dBc (5MHz)
  • HIGH OPEN-LOOP GAIN: 110dB
  • FAST 12-BIT SETTLING: 10.5ns (0.01%)
  • LOW INPUT OFFSET VOLTAGE: 300µV
  • OUTPUT CURRENT: ±100mA
  • APPLICATIONS
    • ADC/DAC BUFFER AMPLIFIER
    • LOW DISTORTION "IF" AMPLIFIER
    • ACTIVE FILTERS
    • LOW-NOISE RECEIVER
    • WIDEBAND TRANSIMPEDANCE
    • TEST INSTRUMENTATION
    • PROFESSIONAL AUDIO
    • OPA643 UPGRADE

All trademarks are the property of their respective owners.

  • HIGH BANDWIDTH: 260MHz (G = +5)
  • GAIN BANDWIDTH PRODUCT: 800MHz
  • LOW INPUT VOLTAGE NOISE: 2.0nV/√Hz
  • VERY LOW DISTORTION: –96dBc (5MHz)
  • HIGH OPEN-LOOP GAIN: 110dB
  • FAST 12-BIT SETTLING: 10.5ns (0.01%)
  • LOW INPUT OFFSET VOLTAGE: 300µV
  • OUTPUT CURRENT: ±100mA
  • APPLICATIONS
    • ADC/DAC BUFFER AMPLIFIER
    • LOW DISTORTION "IF" AMPLIFIER
    • ACTIVE FILTERS
    • LOW-NOISE RECEIVER
    • WIDEBAND TRANSIMPEDANCE
    • TEST INSTRUMENTATION
    • PROFESSIONAL AUDIO
    • OPA643 UPGRADE

All trademarks are the property of their respective owners.

The OPA843 provides a level of speed and dynamic range previously unattainable in a monolithic op amp. Using a high Gain Bandwidth (GBW), two gain-stage design, the OPA843 gives a medium gain range device with exceptional dynamic range. The "classic" differential input complements this high dynamic range with DC precision beyond most high-speed amplifier products. Very low input offset voltage and current, high Common-Mode Rejection Ratio (CMRR) and Power-Supply Rejection Ratio (PSRR), and high open-loop gain combine to give a high DC precision amplifier along with low noise and high 3rd-order intercept.

12- to 16-bit converter interfaces will benefit from this combination of features. High-speed transimpedance applications can be implemented with exceptional DC precision as well. Differential configurations using two OPA843s can deliver very low distortion to high output voltages, as shown below.

The OPA843 provides a level of speed and dynamic range previously unattainable in a monolithic op amp. Using a high Gain Bandwidth (GBW), two gain-stage design, the OPA843 gives a medium gain range device with exceptional dynamic range. The "classic" differential input complements this high dynamic range with DC precision beyond most high-speed amplifier products. Very low input offset voltage and current, high Common-Mode Rejection Ratio (CMRR) and Power-Supply Rejection Ratio (PSRR), and high open-loop gain combine to give a high DC precision amplifier along with low noise and high 3rd-order intercept.

12- to 16-bit converter interfaces will benefit from this combination of features. High-speed transimpedance applications can be implemented with exceptional DC precision as well. Differential configurations using two OPA843s can deliver very low distortion to high output voltages, as shown below.

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Technical documentation

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Type Title Date
* Data sheet Wideband, Low Distortion, Medium Gain, Voltage-Feedback Operational Amp datasheet (Rev. C) 30 Dec 2008
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
Technical article How to build a TIA circuit using fully differential amplifiers 25 Oct 2013
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
Analog Design Journal Using a decompensated op amp for improved performance 11 Mar 2005
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

OPA843 PSpice Model (Rev. A)

SBOC021A.ZIP (61 KB) - PSpice Model
Simulation model

OPA843 TINA-TI Reference Design (Rev. B)

SBOC096B.TSC (96 KB) - TINA-TI Reference Design
Simulation model

OPA843 TINA-TI Spice Model (Rev. A)

SBOM178A.ZIP (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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