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OPA857 - Selectable-Feedback Resistance Transimpedance Amplifier

Description

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.

Features

  • 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.

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Datasheet Details

Part number OPA857
Manufacturer Texas Instruments
File Size 1.56 MB
Description Selectable-Feedback Resistance Transimpedance Amplifier
Datasheet download datasheet OPA857 Datasheet

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Full PDF Text Transcription

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community OPA857 SBOS630D – DECEMBER 2013 – REVISED AUGUST 2016 OPA857 Ultralow-Noise, Wideband, Selectable-Feedback Resistance Transimpedance Amplifier 1 Features •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.
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