Analog Devices’ A/D Converters with Internal Reference Consume Lowest Power with High Accuracy/Small Package Combination

Multichannel, 12-bit, 1-MSPS SAR A/D converters allows industrial and medical equipment designers to optimize operating and static power budgets.

Bangalore, India, Aug 28, 2014: – Analog Devices, Inc. (ADI) introduced  three ultra-low-power, multichannel, 12-bit, 1-MSPS SAR (successive approximation register) A/D converters. The new 2, 4 and 8-channel A/D converters are designed for battery-powered data acquisition modules, handheld meters, field instruments and communications applications as well as medical devices such as portable electrocardiograms and heart rate monitors. The A/D converters are the most power-efficient in their class, dissipating a maximum of 1.7 mW at 1 MSPS (mega-samples per second), which is over 60 percent less power than the closest SAR A/D converter competitor. The A/D converters are housed in a tiny 4-mm × 4-mm LFCSP package and feature a 5 ppm/°C typ on-chip internal reference. Watch a video about ADI’s new multichannel A/D converters: http://videos.analog.com/video/products/analog-to-digital-converters/3232171672001/Industrys-Lowest-Power-Multichannel-12-bit-ADCs/.

• View the AD7091R-8 A/D data sheet, order samples and evaluation boards
• Get support at ADI’s EngineerZone™ online technical support community

Key Features

• 1 MSPS throughput with flexible power/throughput rate management
• Power consumption at 3V supply:
  – 1.7 mW @ 1 MSPS
  – 900 µW @ 500 kSPS
  – 1.4 µW @ powerdown
• Programmable channel sequencer with access to the multiplexer output eliminates the need for one buffer per channel saving both power and space
• User programmable alert can signal an out-of-bounds condition without requiring the user to service the A/D converter output data (minimizes processor overhead/power)
• SPI interface
• Temperature range: –40°C to +125°C

Pricing and Availability