18-Bit, 1.33 MSPS PulSAR 10.5 mW ADC in MSOP/QFN
The SPI-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic, using the separate VIO supply.
The AD7984 is available in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C.
- Battery-powered equipment
- Data acquisition systems
- Medical instruments
- Seismic data acquisition systems
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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
The EVAL-AD7984SDZ is a fully featured evaluation kit for the AD7984. This board operates in stand alone mode or in conjunction with the System Development Platform, EVAL-SDP-CB1Z . When operated with the System Development Platform software is provided enabling the user to perform detailed analysis of the ADC's performance. This software includes the technical note describing the operation and set up of the evaluation board in standalone operation or when operated with the System Development Platform . When operated in standalone mode the ADZS-BRKOUT-EX3 break out board is recommended for access to various control pins.
Recommended Digital Isolators
- For SPI Interface, smallest package, low voltage I/O (1.8 V to 5.5 V) , we recommend the ADUM3481 .
- For SPI Interface, enhanced system-level ESD performance, 2.5 kVrms isolation , we recommend the ADUM3401 .
- For SPI Interface, lowest power, 2.5 kVrms isolation , we recommend the ADUM1401 .
- For SPI Interface, low power, 5.0 kVrms isolation , we recommend the ADUM4401 .
Recommended External Voltage References
- For low drift, low noise and low dropout , we recommend the ADR445 .
- For low drift, low noise, low power , we recommend the ADR4550 .
- For driving the voltage reference input , we recommend the AD8031 or the AD8655 .
- For low drift, low noise and high current output applications , we recommend the ADR435 .
Recommended Driver Amplifiers
- For precision, low power, low distortion applications , we recommend the ADA4841-1, ADA4940-1 or the ADA4941-1 .
- For high frequency, low noise, low distortion applications , we recommend the ADA4897-1 or the AD8021 .
- For low frequency, precision, low bias current applications , we recommend the ADA4627-1, ADA4610-2 or the AD8476 .
Differential Drivers for Precision ADCs
Product Selection Guide
SAR ADC & Driver Quick-Match Guide
Find drivers for ADI's most popular single-ended and differential SAR ADCs based on your specific application...
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(Analog Dialogue, Volume 47 – June 2013)
CN0269: 18-Bit, 1.33 MSPS, 16-Channel Data Acquisition System
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