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Microchip Releases New High-Side Current and Power Sensor


The PAC1921 Features Both a Configurable Analog Output and a 2-Wire Digital Bus


Click for Larger Image - Microchip High Side Current Sensor

Microchip has just released a combined analog and digital current sensor-the PAC1921. This new device is the world's first high-side current 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 maximize data and diagnostic reporting, while having the analog output to minimize 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 synchronize readings of multiple devices.

Click for Larger Image - Microchip High Side Current Sensor “The ability to output power measurements in both the digital and analog domains provides designers with a unique level of flexibility,” said Bryan J. Liddiard, marketing vice president of Microchip's Analog and Interface Products Division. “The PAC1921 accomplishes this by combining a digital current sensor to maximize data and diagnostic reporting, together with an analog current sensor to minimize data latency.”


The company's Web site address is www.microchip.com
[Reprinted with kind permission from Microchip - Release Date, 9th June, 2015]


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