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12-bit ADCs Address Space-Constrained Applications

Tue, 12/09/2008 - 6:50am

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ADI ADC AD9239 AD9639Requiring only eight pins and traces compared to as many as 26 in similar dual-channel devices, a pair of four-channel 12-bit analog-to-digital converters (ADCs) Analog Devices use up to 50 percent less printed-circuit-board surface area than other ADCs in their class. Requiring a single 1.8-Vin, the 250-MSPS (mega-sample-per-second) AD9239 incorporates a packetized output scheme, while the 210-MSPS AD9639 supports a JESD204-compliant output. Both ADCs have on-chip PLL and input-buffer circuits as well as an on-chip temperature sensor. Features include a S/N ratio of 65 dBFs, a spurious-free dynamic range of 77 dBc, and an ENOB of 10.5, all at an 85-MHz input frequency. The AD9239 and AD9639 quad ADCs are compatible with ADI’s variable gain amplifiers, including the AD8372 and AD8376. From $119 each per 1,000.

Analog Devices
781-937-1666, www.analog.com

For more information on the AD9239 and AD9639 quad ADCs, visit http://www.analog.com/pr/AD9239 or http://www.analog.com/pr/AD9639.

To view ADI’s DAC selection guide, visit http://www.analog.com/DACsearch.

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