June 10, 2015 - Microchip introduces PAC1921 current/power sensor with both a digital output, as well as a configurable analog output that can present power, current or voltage over the single output pin. Simultaneously, all power related output values are also available over the 2-Wire digital bus, which is compatible with I2C.
The PAC1921, available in a 10-lead 3x3 mm VDFN package, was designed with the 2-Wire bus to maximise data and diagnostic reporting, while having the analog output to minimise data latency. The analog output can also be adjusted for use with 3V, 2V, 1.5V or 1V microcontroller inputs.
The PAC1921 is ideal for networking, power-distribution, power-supply, computing and industrial-automation applications that cannot allow for latency when performing high-speed power management. A 39-bit accumulation register and 128 times gain configuration make this device ideal for both heavy and light system-load power measurement, from 0V to 32V. It has the ability to integrate more than two seconds of power-consumption data. Additionally, the PAC1921 has a READ/INT pin for host control of the measurement period; and this pin can be used to synchronise readings of multiple devices.
