16-Bit, 250 kSPS PulSAR® ADC in MSOP/QFN
Power dissipation scales linearly with throughput.
The SPI-compatible serial interface also features the ability, using the SDI input, to daisy chain several ADCs on a single 3-wire bus or provides an optional BUSY indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic using the separate supply VIO.
The AD7685 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C.
- Battery-powered equipment
- Medical instruments
- Mobile communications
- Personal digital assistants (PDAs)
- Data acquisition
- Process controls
Comparable Parts Click to see all in Parametric Search
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.
Recommended Digital Isolators
- For SPI Interface, enhanced system-level ESD performance, 2.5 kVrms isolation , we recommend the ADUM3401 .
- For SPI Interface, smallest package, low voltage I/O (1.8 V to 5.5 V) , we recommend the ADUM3481 .
- 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 Driver Amplifiers
- For precision, low power, low distortion applications , we recommend the ADA4841-1, ADA4896-2, AD8031 or the AD8031 .
- 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, ADA4637-1 or the AD8610 .
Recommended External Voltage Reference
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...
Front-End Amplifier and RC Filter Design for a Precision SAR...
Voltage Reference Design for Precision Successive-Approximation ADCs
(Analog Dialogue, Volume 47 – June 2013)
High Speed Op Amp Drives a 16-Bit, 1-MSPS Differential-Input A/D Converter
(Analog Dialogue, Vol. 36, No. 6, November/December 2002)
CN-0213:Complete High Speed, High CMRR Precision Analog Front End for...
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Didn't find what you were looking for?
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.