ADAS3022 Data Acquisition System

By Analog Devices Inc 165

ADAS3022 Data Acquisition System

The Analog Devices' ADAS3022 is a complete 16-bit, 1 MSPS, successive approximation–based analog-to-digital data acquisition system that is manufactured on Analog Devices' proprietary iCMOS® high voltage industrial process technology. The device integrates an 8-channel, low leakage multiplexer; a high-impedance programmable gain instrumentation amplifier (PGIA) stage with a high common-mode rejection; a precision, low drift 4.096 V reference and buffer; and a 16-bit charge-redistribution analog-to-digital converter (ADC) with successive approximation register (SAR) architecture. The ADAS3022 can resolve eight single-ended inputs or four fully differential inputs up to ±24.576 V when using ±15 V supplies. In addition, the device can accept the commonly used bipolar differential, bipolar single-ended, pseudo bipolar, or pseudo unipolar input signals, thus enabling the use of almost any direct sensor interface.

The ADAS3022 simplifies design challenges by eliminating signal buffering, level shifting, amplification/attenuation, common-mode rejection, settling time, or any of the other analog signal conditioning challenges while allowing a smaller form factor, faster time to market, and lower costs.

Features Applications
  • Ease of use: 16-bit, 1 MSPS complete data acquisition system
  • High impedance, 8-channel input: >500 MΩ
  • Differential input voltage range: ±24.576 V maximum
  • High input common-mode rejection >100 dB
  • User programmable input ranges
  • Channel sequencer with individual channel gains
  • On-chip 4.096 V reference and buffer
  • Auxiliary input – direct interface to PulSAR ADC inputs
  • No latency/pipeline delay (SAR architecture)
  • Serial 4-wire 1.8 to 5 V SPI / SPORT compatible interface
  • LFCSP package (6 mm × 6 mm)
  • -40° C to +85° C industrial temperature range
  • Multi-channel data acquisition and system monitoring
  • Process control
  • Power line monitoring
  • Automated test equipment
  • Instrumentation