Texas Instruments OPA856 Wideband Low-Noise Op Amp

Texas Instruments OPA856 Wideband Low-Noise Operational Amplifier (Op Amp) has bipolar inputs for wideband transimpedance and voltage amplifier applications. The ultra-wide, 1.1GHz gain-bandwidth product (GBWP) of the OPA856, combined with the broadband voltage noise of 0.9nV/√Hz, produces a viable amplifier for wideband transimpedance applications and high-speed data acquisition systems. It also works with applications with weak signal inputs that require low-noise and high-gain front ends. The OPA856 combines multiple features to optimize dynamic performance. In addition to the wide small-signal bandwidth, the OPA856 has 110MHz of large-signal bandwidth (V_OUT = 2V_PP) and a slew rate of 350V/µs.

The Texas Instruments OPA856 is optimized for optical time-of-flight (ToF) systems, where it is used with time-to-digital converters, such as the TDC7201. It can also 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.

Features

1.1GHz unity-gain bandwidth
1.1GHz gain-bandwidth product
350V/µs slew rate
0.9nV/√Hz low input voltage noise
Low Input Capacitance
- 0.4pF common-mode
- 0.7pF differential
Wide input common-mode range
- 0.4V from the positive supply
- 1.1V from the negative supply