h1_key

说明

PAC1941是一款功率监测器和能量监测器，可报告总线电压和感测电压的分辨率为16位。功率是报告为两个16位独立总线的同时乘积，以及感测电压。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个样本的平均值。该设备可以检测对用户的过/欠压、过/欠电流和过功率每个通道的编程限制，并生成ALERT输出。

PAC1941有两个版本：PAC1941-1设备用于高压侧电流传感和PAC1941-2设备用于低压侧电流感应。

特性

High-Side/Low-Side Current Monitor
• 100 mV Full-Scale Range (Configurable for 50 mV)
• 16-Bit Resolution
• External Senss Resistor Sets the Full-Scale Current Range
• Very Low Input Current Simplifies Routing

Voltage Monitor with Wide VBUS Range
• 0 to 9V Full-Scale Range (Configurable to 4.5V)
• Auto-Calibration of Offset Error for 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 Burst Mode

2.7 to 5.5 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/Under Voltage and Current or Overpower Conditions
• Two Independent Alert/GPIO Pins
• Coulomb Counting: When Selected, the Accumulator Accumulates VSENSE Values

参数