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OPA955

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11GHz gain bandwidth, decompensated transimpedance amplifier with bipolar input

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Data sheet

OPA955

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Product details

Architecture 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) 11000 BW at Acl (MHz) 2500 Acl, min spec gain (V/V) 7 Slew rate (typ) (V/µs) 2750 Vn at flatband (typ) (nV√Hz) 0.79 Vn at 1 kHz (typ) (nV√Hz) 1.6 Iq per channel (typ) (mA) 20.2 Vos (offset voltage at 25°C) (max) (mV) 1.5 Rail-to-rail No Features Decompensated, Shutdown Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 86 Input bias current (max) (pA) 100000 Offset drift (typ) (µV/°C) 1 Iout (typ) (mA) 80 2nd harmonic (dBc) 79 3rd harmonic (dBc) 88 Frequency of harmonic distortion measurement (MHz) 10
Architecture 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) 11000 BW at Acl (MHz) 2500 Acl, min spec gain (V/V) 7 Slew rate (typ) (V/µs) 2750 Vn at flatband (typ) (nV√Hz) 0.79 Vn at 1 kHz (typ) (nV√Hz) 1.6 Iq per channel (typ) (mA) 20.2 Vos (offset voltage at 25°C) (max) (mV) 1.5 Rail-to-rail No Features Decompensated, Shutdown Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 86 Input bias current (max) (pA) 100000 Offset drift (typ) (µV/°C) 1 Iout (typ) (mA) 80 2nd harmonic (dBc) 79 3rd harmonic (dBc) 88 Frequency of harmonic distortion measurement (MHz) 10
WSON (DSG) 8 4 mm² (2 mm × 2 mm)
  • High gain bandwidth product: 11GHz
  • Decompensated, gain ≥ 7V/V (stable)
  • Ultra low input voltage noise: 0.79nV/√Hz
  • Slew rate: 3750V/µs
  • Low input capacitance:
    • Common-mode: 0.9pF
    • Differential: 0.2pF
  • Wide input common-mode range:
    • 0.4V from positive supply
    • 1.1V from negative supply
  • 3VPP total output swing
  • Supply voltage range: 3.3V to 5.25V
  • Quiescent current: 20.2mA
  • Package: 8-pin WSON
  • Temperature range: –40°C to +125°C
  • High gain bandwidth product: 11GHz
  • Decompensated, gain ≥ 7V/V (stable)
  • Ultra low input voltage noise: 0.79nV/√Hz
  • Slew rate: 3750V/µs
  • Low input capacitance:
    • Common-mode: 0.9pF
    • Differential: 0.2pF
  • Wide input common-mode range:
    • 0.4V from positive supply
    • 1.1V from negative supply
  • 3VPP total output swing
  • Supply voltage range: 3.3V to 5.25V
  • Quiescent current: 20.2mA
  • Package: 8-pin WSON
  • Temperature range: –40°C to +125°C

The OPA955 is a wideband, ultra-low noise operational amplifier with bipolar inputs for wideband transimpedance and voltage feedback amplifier applications. When the device is configured as a transimpedance amplifier (TIA), the 11GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths at transimpedance gains up to tens of kilohms. The following graphs show the transimpedance bandwidth and transimpedance pulse response performance of the OPA955 in low-capacitance photodiode (PD) applications.

The OPA955 is a viable amplifier for wideband transimpedance applications, high-speed data acquisition systems, and applications with weak signal inputs that require ultra-low noise and high-gain front ends. For example, the OPA955 can operate in optical time-of-flight (ToF) systems along with time-to-digital converters, such as the TDC7201, and integrated laser drivers, such as the LMH13000. The OPA955 can also be used 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. For optimized frequency respone, the OPA955 package has a feedback pin (FB) that simplifies the feedback network connection between the input and output.

The OPA955 is a wideband, ultra-low noise operational amplifier with bipolar inputs for wideband transimpedance and voltage feedback amplifier applications. When the device is configured as a transimpedance amplifier (TIA), the 11GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths at transimpedance gains up to tens of kilohms. The following graphs show the transimpedance bandwidth and transimpedance pulse response performance of the OPA955 in low-capacitance photodiode (PD) applications.

The OPA955 is a viable amplifier for wideband transimpedance applications, high-speed data acquisition systems, and applications with weak signal inputs that require ultra-low noise and high-gain front ends. For example, the OPA955 can operate in optical time-of-flight (ToF) systems along with time-to-digital converters, such as the TDC7201, and integrated laser drivers, such as the LMH13000. The OPA955 can also be used 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. For optimized frequency respone, the OPA955 package has a feedback pin (FB) that simplifies the feedback network connection between the input and output.
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* Data sheet OPA955 11GHz Gain Bandwidth Product, Gain of 7V/V Stable, Bipolar Input Amplifier datasheet PDF | HTML Jul 15, 2026

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