Features
• High-Side Current Monitor with 2, 3 or 4 Channels
- 100 mV full scale range for current sense
voltage,16 bit resolution
- Selectable bidirectional current sense
capability, -100 mV to +100 mV range, 16 bit
two’s complement (signed) data format
- External sense resistor sets full scale current
range
- Very low input current simplifies routing
• Wide Bus Voltage Range for Voltage Monitor
- 0V to 32V input common-mode voltage
- 16 bit resolution for voltage measurements,
14 bits are used for power calculations
• Real Time Auto-Calibration of Offset and Gain
Errors for Voltage and Current, No User
Adjustment Required
• 1% Power Measurement Accuracy over a Wide
Dynamic Range
• On-Chip Accumulation of 28-bit Power Results for
Energy Measurement
- 48-bit power accumulator register for
recording accumulated power data
- 24 bit Accumulator Count
- User programmable sampling rates of 8, 64,
256 and 1024 samples per second
- 17 minutes of power data accumulation
minimum at 1024 S/s
- Over 36 hours of power data accumulation
minimum at 8 S/s
• 2.7V to 5.5V Supply Operation
- Separate VDD I/O pin for digital I/O
- 1.62-5.5V capable SMBus and digital I/O
- SMBus 3.0 and I2C Fast Mode Plus (1Mb/S)
• SMBus Address – 16 Options, set with Resistor
• No Input Filters Required
• ALERT Features that can be Enabled:
- ALERT on accumulator overflow
- ALERT on Conversion Complete
• 4x4x0.5 mm UQFN Package
• 2.225x2.17 mm WLCSP Package
- WLCSP available for PAC1934 only
- Contact Marketing for other options

Applications
• Embedded Computing
• Networking
• FPGA Systems
• Automotive
• Low voltage/High Power – AI, GPU
• Industrial
• Linux Applications
• Notebook and Tablet Computing
• Cloud, Linux and Server Computing

Description
The PAC1932/3/4 are two, three and four-channel
power and energy monitoring devices. A high-voltage
multiplexer sequentially connects the inputs to a bus
voltage monitor and current sense amplifier that feed
high-resolution ADCs. Digital circuitry performs power
calculations and energy accumulation.
This enables energy monitoring with integration
periods from 1 ms up to 36 hours or longer. Bus
voltage, sense resistor voltage and accumulated
proportional power are stored in registers for retrieval
by the system master or Embedded Controller.
The sampling rate and energy integration period can be
controlled over SMBus or I2C. Active channel selection,
one-shot measurements and other controls are also
configurable by SMBus or I2C.
The PAC1932/3/4 device family uses real time
calibration to minimize offset and gain errors. No input
filters are required for this device.