Product details

Architecture Voltage FB Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 3.3 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.25 GBW (Typ) (MHz) 1080 BW @ Acl (MHz) 1100 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 350 Vn at flatband (Typ) (nV/rtHz) 0.9 Vn at 1 kHz (Typ) (nV/rtHz) 0.9 Iq per channel (Typ) (mA) 15.5 Vos (offset voltage @ 25 C) (Max) (mV) 1.5 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (C) -40 to 125 CMRR (Typ) (dB) 106 Input bias current (Max) (pA) 5000000 Offset drift (Typ) (uV/C) 0.7 Output current (Typ) (mA) 100 2nd harmonic (dBc) 85 3rd harmonic (dBc) 95 @ MHz 10
Architecture Voltage FB Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 3.3 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.25 GBW (Typ) (MHz) 1080 BW @ Acl (MHz) 1100 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 350 Vn at flatband (Typ) (nV/rtHz) 0.9 Vn at 1 kHz (Typ) (nV/rtHz) 0.9 Iq per channel (Typ) (mA) 15.5 Vos (offset voltage @ 25 C) (Max) (mV) 1.5 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (C) -40 to 125 CMRR (Typ) (dB) 106 Input bias current (Max) (pA) 5000000 Offset drift (Typ) (uV/C) 0.7 Output current (Typ) (mA) 100 2nd harmonic (dBc) 85 3rd harmonic (dBc) 95 @ MHz 10
WSON (DSG) 8 4 mm² 2 x 2
  • Unity-Gain Bandwidth: 1.1 GHz
  • Gain Bandwidth Product: 1.1 GHz
  • Slew Rate: 350 V/µs
  • Low Input Voltage Noise: 0.9 nV/√Hz
  • Low Input Capacitance:
    • Common-Mode: 0.4 pF
    • Differential: 0.7 pF
  • Wide Input Common-Mode Range:
    • 0.4 V from Positive Supply
    • 1.1 V from Negative Supply
  • 3 VPP Total Output Swing
  • Supply Voltage Range: 3.3 V to 5.25 V
  • Quiescent Current: 17.2 mA
  • Package: 8-Pin WSON
  • Temperature Range: –40 to +125°C
  • Unity-Gain Bandwidth: 1.1 GHz
  • Gain Bandwidth Product: 1.1 GHz
  • Slew Rate: 350 V/µs
  • Low Input Voltage Noise: 0.9 nV/√Hz
  • Low Input Capacitance:
    • Common-Mode: 0.4 pF
    • Differential: 0.7 pF
  • Wide Input Common-Mode Range:
    • 0.4 V from Positive Supply
    • 1.1 V from Negative Supply
  • 3 VPP Total Output Swing
  • Supply Voltage Range: 3.3 V to 5.25 V
  • Quiescent Current: 17.2 mA
  • Package: 8-Pin WSON
  • Temperature Range: –40 to +125°C

The OPA856 is a wideband, low-noise operational amplifier with bipolar inputs for wideband transimpedance and voltage amplifier applications. When the device is configured as a transimpedance amplifier (TIA), the 1.1-GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths in low-capacitance photodiode applications.

The graph below shows the bandwidth and noise performance of the OPA856 as a function of the photodiode capacitance when the amplifier is configured as a TIA. The total noise is calculated along a bandwidth range extending from dc to the calculated frequency, f, on the left-hand scale. The OPA856 package has a feedback pin (FB) that simplifies the feedback network connection between the input and the output.

The OPA856 is optimized to operate in optical time-of-flight (ToF) systems where the OPA856 is used with time-to-digital converters, such as the TDC7201. Use the OPA856 to drive a high-speed analog-to-digital converter (ADC) in high-resolution LIDAR systems with a differential output amplifier, such as the THS4541 or LMH5401.

The OPA856 is a wideband, low-noise operational amplifier with bipolar inputs for wideband transimpedance and voltage amplifier applications. When the device is configured as a transimpedance amplifier (TIA), the 1.1-GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths in low-capacitance photodiode applications.

The graph below shows the bandwidth and noise performance of the OPA856 as a function of the photodiode capacitance when the amplifier is configured as a TIA. The total noise is calculated along a bandwidth range extending from dc to the calculated frequency, f, on the left-hand scale. The OPA856 package has a feedback pin (FB) that simplifies the feedback network connection between the input and the output.

The OPA856 is optimized to operate in optical time-of-flight (ToF) systems where the OPA856 is used with time-to-digital converters, such as the TDC7201. Use the OPA856 to drive a high-speed analog-to-digital converter (ADC) in high-resolution LIDAR systems with a differential output amplifier, such as the THS4541 or LMH5401.

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Technical documentation

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Type Title Date
* Data sheet OPA856 1.1 GHz Unity-Gain Bandwidth, 0.9-nV/√Hz, Amplifier datasheet 05 Oct 2020
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005

Design & development

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

Evaluation board

DEM-OPA-WSON8-EVM — Unpopulated evaluation module for single channel op-amps in the DSG (8-pin WSON) package

The DEM-OPA-WSON8-EVM is an unpopulated evaluation module for the single channel op-amps in the DSG (8-pin WSON) package. This EVM is designed to high-speed performance specifications and is compatible with amplifiers that have over 1 GHz of gain bandwidth.
Simulation model

OPA856 Unencrypted PSPICE Model Package

SBOMBI1.ZIP (23 KB) - PSpice Model
Simulation model

OPA856 Unencrypted TINA-TI Reference Design Package

SBOMBI2.TSC (54 KB) - TINA-TI Reference Design
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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WSON (DSG) 8 View options

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