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High-speed op amps (GBW ≥ 50 MHz)

OPA858-Q1

ACTIVE

Automotive 5.5-GHz gain bandwidth, decompensated transimpedance amplifier with FET input

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Data sheet

OPA858-Q1

ACTIVE
Data sheet Order now

Product details

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) 2.5 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 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) (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) 2.5 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 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) (µV/°C) 1.5 Iout (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 brief 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 PDF | HTML 17 Jul 2020
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005

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