OPA858

AKTIV

Integrierter dekompensierter Transimpedanzverstärker mit FET-Eingang, 5,5 GHz Gain-Bandbreiteprodukt

Produktdetails

Architecture FET / CMOS Input, Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3.3 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.25 GBW (typ) (MHz) 5500 BW at Acl (MHz) 1200 Acl, min spec gain (V/V) 7 Slew rate (typ) (V/µs) 2000 Vn at flatband (typ) (nV√Hz) 2.5 Vn at 1 kHz (typ) (nV√Hz) 25 Iq per channel (typ) (mA) 20.5 Vos (offset voltage at 25°C) (max) (mV) 2.5 Rail-to-rail No Features Decompensated, Shutdown Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 80 Input bias current (max) (pA) 5 Offset drift (typ) (µV/°C) 1.5 Iout (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 (+5 V = 5, ±5 V = 10) (min) (V) 3.3 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.25 GBW (typ) (MHz) 5500 BW at Acl (MHz) 1200 Acl, min spec gain (V/V) 7 Slew rate (typ) (V/µs) 2000 Vn at flatband (typ) (nV√Hz) 2.5 Vn at 1 kHz (typ) (nV√Hz) 25 Iq per channel (typ) (mA) 20.5 Vos (offset voltage at 25°C) (max) (mV) 2.5 Rail-to-rail No Features Decompensated, Shutdown Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 80 Input bias current (max) (pA) 5 Offset drift (typ) (µV/°C) 1.5 Iout (typ) (mA) 80 2nd harmonic (dBc) 80 3rd harmonic (dBc) 86 Frequency of harmonic distortion measurement (MHz) 10
DIESALE (Y) See data sheet WSON (DSG) 8 4 mm² 2 x 2
  • High gain bandwidth product: 5.5GHz
  • Decompensated, gain ≥ 7V/V (stable)
  • Ultra-low bias current MOSFET inputs: 10pA
  • Low input voltage noise: 2.5nV/√Hz
  • Slew rate: 2000V/µs
  • Low Input capacitance:
    • Common-mode: 0.6pF
    • Differential: 0.2pF
  • Wide input common-mode range:
    • 1.4V from positive supply
    • Includes negative supply
  • 2.5VPP output swing in TIA configuration
  • Supply voltage range: 3.3V to 5.25V
  • Quiescent current: 20.5mA
  • Package: 8-pin WSON
  • Temperature range: –40°C to +125°C
  • High gain bandwidth product: 5.5GHz
  • Decompensated, gain ≥ 7V/V (stable)
  • Ultra-low bias current MOSFET inputs: 10pA
  • Low input voltage noise: 2.5nV/√Hz
  • Slew rate: 2000V/µs
  • Low Input capacitance:
    • Common-mode: 0.6pF
    • Differential: 0.2pF
  • Wide input common-mode range:
    • 1.4V from positive supply
    • Includes negative supply
  • 2.5VPP output swing in TIA configuration
  • Supply voltage range: 3.3V to 5.25V
  • Quiescent current: 20.5mA
  • Package: 8-pin WSON
  • Temperature range: –40°C to +125°C

The OPA858 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 5.5GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths at transimpedance gains in the range of tens to hundreds of kilohms.

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

The OPA858 is optimized to operate in optical time-of-flight (ToF) systems where the OPA858 is used with time-to-digital converters, such as the TDC7201. Use the OPA858 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 devices.

The OPA858 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 5.5GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths at transimpedance gains in the range of tens to hundreds of kilohms.

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

The OPA858 is optimized to operate in optical time-of-flight (ToF) systems where the OPA858 is used with time-to-digital converters, such as the TDC7201. Use the OPA858 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 devices.

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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Datum
* Data sheet OPA858 5.5GHz Gain Bandwidth Product, Gain of 7V/V Stable, FET Input Amplifier datasheet (Rev. B) PDF | HTML 05 Mai 2025
White paper An Introduction to Automotive LIDAR (Rev. D) PDF | HTML 16 Apr 2025
Circuit design Transimpedance amplifier circuit. (Rev. B) PDF | HTML 26 Sep 2024
Application brief LiFi: TI High-Speed Products for Optical Wireless Communication PDF | HTML 07 Aug 2023
Application brief Time of Flight and LIDAR - Optical Front End Design (Rev. A) PDF | HTML 29 Apr 2022
Application note High Speed ADCs and Amplifiers for Flow Cytometry Applications 12 Okt 2020
Technical article 3 common questions when designing with high-speed amplifiers PDF | HTML 17 Jul 2020
Analog Design Journal Maximizing the dynamic range of analog fronts ends having a transimpedance amp 14 Jun 2019
Analog Design Journal Easily improve the performance of analog circuits with decompensated amplifiers (Rev. A) 21 Mai 2019
Technical article What you need to know about transimpedance amplifiers – part 2 PDF | HTML 01 Sep 2016
Technical article What you need to know about transimpedance amplifiers – part 1 PDF | HTML 06 Mai 2016
Technical article SPICE it up: How to extract the input capacitance of an op amp (part 3) PDF | HTML 21 Mär 2016
Application note AN-1604 Decompensated Operational Amplifiers (Rev. B) 01 Mai 2013
Application note AN-1803 Design Considerations for a Transimpedance Amplifier (Rev. A) 01 Mai 2013
Application note Transimpedance Considerations for High-Speed Operational Amplifiers 22 Nov 2009
Application note Compensate Transimpedance Amplifiers Intuitively (Rev. A) 30 Mär 2005
Analog Design Journal Using a decompensated op amp for improved performance 11 Mär 2005
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005

Design und Entwicklung

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