Product details

Architecture FET / CMOS Input, 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) 5500 BW @ Acl (MHz) 1200 Acl, min spec gain (V/V) 7 Slew rate (Typ) (V/us) 2000 Vn at flatband (Typ) (nV/rtHz) 2.5 Vn at 1 kHz (Typ) (nV/rtHz) 2.5 Iq per channel (Typ) (mA) 20.5 Vos (offset voltage @ 25 C) (Max) (mV) 2.5 Rail-to-rail No Features Shutdown, Decompensated Rating Automotive Operating temperature range (C) -40 to 125 TI functional safety category Functional Safety-Capable CMRR (Typ) (dB) 80 Input bias current (Max) (pA) 5 Offset drift (Typ) (uV/C) 1.5 Output current (Typ) (mA) 80 2nd harmonic (dBc) 80 3rd harmonic (dBc) 86 Frequency of harmonic distortion measurement (MHz) 10
Architecture FET / CMOS Input, 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) 5500 BW @ Acl (MHz) 1200 Acl, min spec gain (V/V) 7 Slew rate (Typ) (V/us) 2000 Vn at flatband (Typ) (nV/rtHz) 2.5 Vn at 1 kHz (Typ) (nV/rtHz) 2.5 Iq per channel (Typ) (mA) 20.5 Vos (offset voltage @ 25 C) (Max) (mV) 2.5 Rail-to-rail No Features Shutdown, Decompensated Rating Automotive Operating temperature range (C) -40 to 125 TI functional safety category Functional Safety-Capable CMRR (Typ) (dB) 80 Input bias current (Max) (pA) 5 Offset drift (Typ) (uV/C) 1.5 Output current (Typ) (mA) 80 2nd harmonic (dBc) 80 3rd harmonic (dBc) 86 Frequency of harmonic distortion measurement (MHz) 10
WSON (DSG) 8 4 mm² 2 x 2
  • AEC-Q100 Qualified for Automotive Applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • High Gain Bandwidth Product: 5.5 GHz
  • Decompensated, Gain ≥ 7 V/V (Stable)
  • Ultra-Low Bias Current MOSFET Inputs: 10 pA
  • Low Input Voltage Noise: 2.5 nV/√Hz
  • Slew rate: 2000 V/µs
  • Low Input Capacitance:
    • Common-Mode: 0.6 pF
    • Differential: 0.2 pF
  • Wide Input Common-Mode Range:
    • 1.4 V from Positive Supply
    • Includes Negative Supply
  • 2.5 VPP Output Swing in TIA Configuration
  • Supply Voltage Range: 3.3 V to 5.25 V
  • Quiescent Current: 20.5 mA
  • Package: 8-Pin WSON
  • Temperature Range: –40°C to +125°C
  • AEC-Q100 Qualified for Automotive Applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • High Gain Bandwidth Product: 5.5 GHz
  • Decompensated, Gain ≥ 7 V/V (Stable)
  • Ultra-Low Bias Current MOSFET Inputs: 10 pA
  • Low Input Voltage Noise: 2.5 nV/√Hz
  • Slew rate: 2000 V/µs
  • Low Input Capacitance:
    • Common-Mode: 0.6 pF
    • Differential: 0.2 pF
  • Wide Input Common-Mode Range:
    • 1.4 V from Positive Supply
    • Includes Negative Supply
  • 2.5 VPP Output Swing in TIA Configuration
  • Supply Voltage Range: 3.3 V to 5.25 V
  • Quiescent Current: 20.5 mA
  • Package: 8-Pin WSON
  • Temperature Range: –40°C to +125°C

The OPA858-Q1 is a wideband, low-noise operational amplifier with CMOS inputs for wideband transimpedance and voltage amplifier applications. When the device is configured as a transimpedance amplifier (TIA), the 5.5-GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths at transimpedance gains in the range of tens to hundreds of kΩs.

The graph below shows the bandwidth and noise performance of the OPA858-Q1 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 scale. The OPA858-Q1 package has a feedback pin (FB) that simplifies the feedback network connection between the input and the output.

The OPA858-Q1 is optimized to operate in optical time-of-flight (ToF) systems where the OPA858-Q1 is used with time-to-digital converters, such as the TDC7201. Use the OPA858-Q1 to drive a high-speed analog-to-digital converter (ADC) in high-resolution LIDAR systems with a differential output amplifier, such as the THS4541-Q1.

The OPA858-Q1 is a wideband, low-noise operational amplifier with CMOS inputs for wideband transimpedance and voltage amplifier applications. When the device is configured as a transimpedance amplifier (TIA), the 5.5-GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths at transimpedance gains in the range of tens to hundreds of kΩs.

The graph below shows the bandwidth and noise performance of the OPA858-Q1 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 scale. The OPA858-Q1 package has a feedback pin (FB) that simplifies the feedback network connection between the input and the output.

The OPA858-Q1 is optimized to operate in optical time-of-flight (ToF) systems where the OPA858-Q1 is used with time-to-digital converters, such as the TDC7201. Use the OPA858-Q1 to drive a high-speed analog-to-digital converter (ADC) in high-resolution LIDAR systems with a differential output amplifier, such as the THS4541-Q1.

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Technical documentation

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Type Title Date
* Data sheet OPA858-Q1 5.5-GHz Gain Bandwidth Product, Gain of 7-V/V Stable, FET Input Amplifier datasheet PDF | HTML 05 Feb 2021
Application note Time of Flight and LIDAR - Optical Front End Design (Rev. A) PDF | HTML 29 Apr 2022
Functional safety information OPA858-Q1 Functional Safety FIT Rate and Pin FMA PDF | HTML 24 Nov 2021
Technical article 3 common questions when designing with high-speed amplifiers 17 Jul 2020
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005

Design & development

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Evaluation board

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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.
User guide: PDF
Not available on TI.com
Evaluation board

OPA858DSGEVM — OPA858, 5.5 GHz GBP, Decompensated Transimpedance Amplifier with FET Input Evaluation Module

The OPA858DSGEVM is an evaluation module for the single OPA858 in the DSG (8-pin WSON) package. The OPA858DSGEVM is designed to quickly demonstrate the functionality and versatility of the amplifier. The EVM is ready to connect to power, signal source, and test instruments through the use of (...)
User guide: PDF
Not available on TI.com
Simulation model

OPA858 PSpice Model

SBOMBK7.ZIP (49 KB) - PSpice Model
Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

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Calculation tool

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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 (...)
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 (...)
User guide: PDF
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