Design Con 2015

Industry’s smallest bipolar, Beyond-the-Rails ADCs require 88% less board space

December 07, 2012

December 07, 2012

Maxim Integrated Products, Inc. is now shipping the MAX11166 and MAX11167, which the company claims are the industry's smallest bipolar ±5V, 16-bit analog-to-digital converters (ADCs). Available in a 9mm2 package, the MAX11166 and MAX11167 are also the only 12-pin 16-bit bipolar ADCs to integrate an internal reference with buffer, saving cost and at least 88% board space over competing solutions.

These highly integrated ADCs feature Beyond-the-Rails technology, which supports ±5V input signal from a single positive 5V rail. This technology eliminates the need for negative power supplies and simplifies designs. At 19.5mW, 500ksps, and 1µA in shutdown mode, the ADCs are applicable for precision measurement data acquisition systems (DASs), industrial/process control, medical instrumentation, and automatic test equipment (ATE).


Click on image to enlarge.

The MAX11166 and MAX11167 communicate using an SPI-compatible serial interface at 2.5V, 3V, 3.3V, or 5V logic levels and have sample rates of 500ksps and 250ksps, respectively. The serial interface can be used to daisy-chain multiple ADCs for multichannel simultaneous-sampling applications; it also provides a “busy” indicator option for simplified system synchronization and timing. Maxim’s proprietary input-charge-pump architecture allows direct sampling of high-impedance sources, eliminating the need for external analog buffers to drive the ADC inputs in some applications.

The new ADCs are available in a robust 12-pin package (3mm x 3mm TDFN), ±5V input, 250ksps and 500ksps options and are specified over the -40°C to +85°C temperature range. Pricing starts at $16.07 (1000-up, FOB USA)

The 18-bit extended resolution versions of these parts are slated for introduction in the first half of 2013.

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