ADCs reduce power in high-speed data apps

The 14-bit, 80 Msamples/s dual AD9644 and single AD9641 A/D converters incorporate the JESD204A data converter serial standard. The AD9644 consumes 423 mW at 80 Msamples/s and features a multi-stage, diferential-pipelined architecture with integrated output error correction logic. At 70 MHz and 80 MSPS, the AD9644 achieves an SNR of 73.7 dBFS and an SFDR of 92 dBc.

The JESD204A coded data rate supports up to 1.6 Gbit/s per link and the AD9644 offers two output modes supporting a dedicated data link per ADC channel or a single shared data link for both ADC channels. At 70 MHz and 80 Msamples/s, the AD9641 achieves an SNR of 74.3 dBFS and an SFDR of 92 dBc. The AD9641 also consumes 238 mW at 80 Msamples/s. Both parts features a 1.8-V supply operation, an integer 1-to-8 input clock divider, IF sampling frequencies to 250 MHz, –148.6 dBFS/Hz input noise at 180 MHz and 80 Msamples/s, and a programmable internal ADC voltage reference. (ea/1,000; AD9644, $37.00, AD9641, $26.35 — samples, now)

Analog Devices , Wilmington , MA
Customer Service 800-262-5643
http://www.analog.com