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Maxim Integrated Products Inc. announced that it is now shipping the MAX11166 and MAX11167, the industry's smallest bipolar ±5 V, 16-bit analog-to-digital converters (ADCs). Available in a tiny 9 mm2 package, the MAX11166 and MAX11167 are the only 12-pin 16-bit bipolar ADCs to integrate an internal reference with buffer, saving cost and at least 88 percent board space over competing solutions. These highly integrated ADCs feature Beyond-the-Rails™ technology, which supports ±5 V input signal from a single positive 5V rail. This technology eliminates the need for negative power supplies and simplifies designs. At 19.5 mW, 500 ksps, and 1 µA in shutdown mode, the ADCs are applicable for precision measurement data acquisition systems (DASs), industrial/process control, medical instrumentation, and automatic test equipment (ATE).
The MAX11166 and MAX11167 communicate using an SPI-compatible serial interface at 2.5, 3, 3.3, or 5 V logic levels and have sample rates of 500 and 250 ksps, 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 18-bit extended resolution versions of these parts are slated for introduction in the first half of 2013.
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