h1_key

说明

PAC1954是一款四电源监视器和能量监视器，可报告总线电压和感应电压，分辨率为16位。功率被报告为两个16位独立总线和感测电压的同时乘积。所有寄存器都可以通过I2C/SMBus访问，包括用于读取稳定性的8个样本平均值。该设备可以检测每个通道的过电压/欠电压、过电流/欠电流和过功率，并生成警报输出。

特性

High-Side/ Low-Side Power Monitor with 2 Channels
• 100 mV Full-Scale Range (configurable to 50 mV)
• External Sense Resistor Sets the Full-Scale Range Current

16-Bit Resolution Sense Current
• Voltage Monitor with Wide VBus Range
• 0V to 32V FSR (configurable to 16V)
• 16-Bit Resolution

Real-Time Auto-Calibration of Offset Errorfor Voltage and Current

1% Power Measurement Accuracy Over a Wide Dynamic Range

On-Chip Accumulation of 30-Bit Power Results for Energy Measurement
• User Programmable Sampling Rates of 8, 64, 256, 1024
• 5120 SPS for a Single Channel Burst Mode

2.7V to 5.5V Supply Operation
• 1.62-5.5V Capable I2C/SMBus and Digital I/O
• SMBus 3.1 and I2C Fast Mode Plus, 1 Mbps
• High Speed Mode (3.4 Mbps)

ALERT on Over/Undervoltage and Current or Overpower Conditions
• Two Independent ALERT/GPIO Pins
• Coulomb Counting: When Selected, the Accumulator Accumulates VSENSE Values