OPA855

OPA855 SBOS622C – JULY 2018 – REVISED JANUARY 2023 OPA855 8-GHz Gain Bandwidth Product, Gain of 7-V/V Stable, Bipolar Input Amplifier 1 Features 3 Description High gain bandwidth product: 8 GHz Decompensated, gain ≥ 7 V/V (stable) Low input voltage noise: 0.98 nV/√Hz Slew rate: 2750 V/µs Low Input capacitance: – Common-mode: 0.6 pF – Differential: 0.2 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: 17.8 mA Package: 8-pin WSON – Bare die (preview) Temperature range: –40°C to +125°C 2 Applications Optical time domain reflectometry (OTDR) 3D scanner Laser distance measurement Solid-state scanning LIDAR Optical ToF position sensor Drone vision Industrial robot LIDAR Vaccum robot LIDAR Silicon photomultiplier (SiPM) buffer amplifier Photomultiplier tube post amplifier CF Rx Lens VBIAS 3.8 V RF 5V ± + OPA855 VREF CF TLV3501 + ± Stop 2 Start 2 The OPA855 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 8-GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths at transimpedance gains of up to tens of kΩs. The following graph shows the bandwidth and noise performance of the OPA855 as a function of the photodiode capacitance when the amplifier is c...