AD8138ARMZ (ANALOG DEVICES)

The AD8138ARMZ is a Low Distortion Differential ADC Driver for differential signal processing. It can be used as a single-ended-to-differential amplifier or as a differential-to-differential amplifier. The AD8138 is as easy to use as an op amp and greatly simplifies differential signal amplification and driving. The ADC driver has a unique internal feedback feature that provides balanced output gain and phase matching, suppressing even order harmonics. The internal feed-back circuit also minimizes any gain error that would be associated with the mismatches in the external gain setting resistors. The differential output helps balance the input to differential ADCs, maximizing the performance of the ADC. It eliminates the need for a transformer with high performance ADCs, preserving the low frequency and DC information. The common-mode level of the differential output is adjustable by a voltage on the VOCM pin, easily level-shifting the input signals for driving single-supply ADCs.