OPA857
Overview
The OPA857 is a wideband, fast overdrive recovery, fast-settling, ultralow-noise transimpedance amplifier targeted at photodiode monitoring applications. With selectable feedback resistance, the OPA857 simplifies the design of high-performance optical systems.
- 1 Internal Midscale Reference Voltage
- Pseudo-Differential Output Voltage
- Wide Dynamic Range
- Closed-Loop Transimpedance Bandwidth: - 125 MHz (5-kΩ Transimpedance Gain, 1.5-pF External Parasitic Capacitance) - 105 MHz (20-kΩ Transimpedance Gain, 1.5-pF External Parasitic Capacitance)
- Ultralow Input-Referred Current Noise (Brickwall Filter BW = 135 MHz): 15 nARMS (20-kΩ Transimpedance)
- Very Fast Overload Recovery Time: < 25 ns
- Internal Input Protection Diode
- Power Supply: - Voltage: 2.7 V to 3.6 V - Current: 23.4 mA
- Extended Temperature Range: -40°C to +85°C
