The ADM1192 is an integrated current sense amplifier that offers digital current and voltage monitoring via an on-chip 12-bit analog-to-digital converter (ADC), communicated through an I2C® interface. An internal current sense amplifier provides high-precision current sensing, and an internal overcurrent lockout function can be used to power down the system when the current exceeds a set threshold.
The ADM1192 is a digital power monitor with a built‑in 12‑bit ADC that measures current and voltage via an I²C interface. It includes a precision current‑sense amplifier, ALERT output for over‑current detection, and programmable over‑current filtering.
The document details electrical specifications, pin functions, thermal characteristics, and typical performance curves, and it offers guidance on using the ALERT output for micro‑controller or FPGA warning and implementing a basic P‑channel FET hot‑swap circuit.
| Operating Voltage Range (VCC) | 3.15 V to 26 V |
|---|---|
| Supply Current (Icc) | 1.7 mA to 2 mA |
| Storage Temperature Range | -65 °C to +125 °C |
| Operating Temperature Range | -40 °C to +85 °C |
| SCL Clock Frequency | 400 kHz |
The ALERT output can be used as a flag to warn a micro‑controller or FPGA of an overcurrent condition.
The device operates from 3.15 V up to 26 V on the VCC pin.
Up to four unique I²C addresses can be created.
The CLRB pin clears a latched overcurrent condition when pulled low.