Data acquisition chip

6 February 2013 Analogue, Mixed Signal, LSI

Analog Devices’ new 16-bit, 1-MSps (million samples per second) ADAS3022 data acquisition IC is effective for power-line monitors, process and motor control, patient monitoring, and other industrial and instrumentation systems that operate within the ±10 V industrial range.

The device integrates ADI’s 16-bit PulSAR successive-approximation A-D converter core with high-impedance input buffers and a 7-stage on-chip PGIA (programmable-gain instrumentation amplifier). It includes an 8-channel, low-leakage multiplexer and precision low-drift 4,096 V reference.

With eight data channels and delivering full 16-bit dynamic range, the ADAS3022 is optimised to interface with a wide range of sensors running from ±10 V to as low as ±640 mV.

The IC offers a complete factory calibrated and tested signal chain. This addresses settling time, signal buffering, level shifting, noise amplification/rejection and other analog signal-conditioning challenges.

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