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uS5651P

ADC Prefilter with Analog Multiplexer

Datasheets PDF

General Description

The uS5651P is an ADC prefilter with analog multiplexer, which output is used mainly by the analog to digital converter (ADC) of GPU/ASIC for voltage and current monitoring. This device has four input channels, and each channel has an independent voltage and current monitoring input. This part senses the voltage across the shunt resistor for current monitoring. The voltage and current information of each channel is processed and scaled then sent to a differential output via a multiplexer. The multiplexer selects which channel to be the signal source in a switching manner. The operating mode, switching sequence, scaling factor and other parameters are set by the I2C register. The device operates with 3.3V VCC supply voltage, and it is available in a WQFN4x4-32L package.

Pin Configuration & Typical Application Circuit

Feature

  • 4 Channel Bus Voltage Monitoring Inputs, Up to 30V
  • 4 Channel Shunt Current Monitoring Inputs with 5V to 30V Operating Voltage
  • 2.8V to 3.8V VCC Supply Voltage
  • Differential Output via Analog Multiplexer with Single Bit MUX Select
  • Selectable I2C Device Address by Resistor Strap
  • Adjustable Scaling Factors and Operating Parameters by I2C Registers
    • Active Channel
    • Alternating Mode
    • Offset Voltage
    • Common Mode Voltage
    • Voltage Gain (Bus Gain)
    • Current Gain (Shunt Gain)
  • Open-Drain Bus OK Indicator
  • Device Enable Control
  • Two IMON Analog Inputs
  • Reference GND Input
  • Stand-Alone and Dual Device Operation Mode
  • Low Profile WQFN4x4-32L Package
  • RoHS Compliant and Halogen Free

Application

  • Computers
  • Power Management
  • Battery Chargers
  • Power Supplies
  • Test Equipments