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Maxim产品 - DS3922介绍

DS3922 - High-Speed Current Mirror and Integrated FETs for DC-DC Controller

DS3922是Maxim美信半导体公司的一款放大器产品，DS3922是High-Speed Current Mirror and Integrated FETs for DC-DC Controller，本站介绍了DS3922的封装应用图解、特点和优点、功能等，并给出了与DS3922相关的Maxim元器件型号供参考。

DS3922 - High-Speed Current Mirror and Integrated FETs for DC-DC Controller - 放大器 - Single-Chip Burst-Mode RSSI Solution Integrates APD Bias, Current Mirror, and DC-DC FETs - 美信半导体

产品概述

The DS3922 high-speed current mirror integrates high-voltage devices necessary for monitoring the burst mode receive power signal in avalanche photodiode (APD) biasing and OLT applications. The device has two small and one large gain current mirror outputs to monitor the APD current. An adjustable current clamp limits current through the APD. The clamp also features an external shutdown. An integrated FET is also provided that can be used to quickly clamp the high-voltage bias to ground in the case of high optical input power. Integrated low-voltage FET circuits can be used to create buck, boost, and inverting DC-DC converters for efficient laser bias and EML bias applications.

The DS3922 is available in a 24-pin TQFN package and operates over an extended -40°C to +95°C temperature range.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • Accurate Burst-Mode RSSI Measurement with Two Current Mirror Outputs Improves Dynamic Range
  • -32dBm to -5dBm Optical Input Range
  • ±0.5dB Accuracy
  • Sampling Period as Short as 300ns
  • Pin Discharge Option
  • Low-Noise APD Bias with Shutdown Options Reduces Receiver Sensitivity
  • 15V to 76V APD Bias
  • External Capacitor Connection for Controlled RC Time Constant of APD Voltage Filter
  • Current Clamp with Adjustable Limit and External Shutdown with Limit Status
  • High-Voltage Switch FET for APD Fast Shutdown
  • Supports Additional DC-DC Functions
  • Low-Voltage Synchronous Buck FETs for Efficient DFB Bias
  • Low-Voltage pMOSFET for Generating Negative Bias Voltage for EMLs
  • Small Package Reduces Total Solution Size and Cost
  • 3.5mm x 3.5mm, 24-Pin TQFN Package with Exposed Pad
    • 热门应用
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