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ADC-Applications-Slide11

Another ADC that is useful in motor control applications is the AD7400 isolated sigma-delta modulator. This ADC can be used to monitor the current going to the motor or the bus voltage on the power stage for a motor control application. The output of the AD7400 is a series of isolated 1’s and 0’s. When this serial data is put into a digital filter 16 bit resolution can be achieved. The AD7400A is also available with improved linearity and −40°C to +125°C operating range in an 8 lead gull wing package.

PTM Published on: 2007-10-05