OPA859

Product Folder Order Now Technical Documents Tools & Software Support & Community OPA859 SBOS852 – SEPTEMBER 2018 OPA859 1.8 GHz Unity-Gain Bandwidth, 3.3-nV/√Hz, FET Input Amplifier 1 Features 1 High Unity-Gain Bandwidth: 1.8 GHz Gain Bandwidth Product: 900 MHz Ultra-Low Bias Current MOSFET Inputs: 10 pA Low Input Voltage Noise: 3.3 nV/√Hz Slew Rate: 1150 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 to +125°C 2 Applications High-Speed Transimpedance Amplifier Laser Distance Measurement CCD Output Buffer High-Speed Buffer Optical Time Domain Reflectometry (OTDR) High-Speed Active Filter 3D Scanner Silicon Photomultiplier (SiPM) Buffer Amplifier Photomultiplier Tube Post Amplifier 3 Description The OPA859 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 0.9-GHz gain bandwidth product (GBWP) enables high closed-loop bandwidths in lowcapacitance photodiode applications. The graph below shows the bandwidth and noise performance of the OPA859 as a function of the photodiode capacitance when the amplifier is set as a TIA. The to...