Date: 05/02/2012

500 MSPS capable 14-Bit ADCs with on-chip JESD204B interface

Intersil has introduced single and dual channel 14-bit analog-to-digital converters with JESD204B serial outputs. These serial output ADCs provide single channel sampling rates up to 500 Megasamples/second and dual channel rates up to 250 Megasamples/second.

The ISLA224S/ISLA214S50 series integrate JESD204B-compatible transmitter offering data rates up to 4.375Gbps per lane, requiring only two lanes to support either the dual channel 14-bit 250Msps converter (one lane per channel) or the single channel 14-bit 500Msps device. An optional third lane is included in the transmitter to support the maximum sampling rate while operating the serial lanes at less than 3.125Gbps, providing backwards compatibility with the JESD204A standard to support lower cost FPGAs. The JESD204B transmitter also provides deterministic latency between the ADC sample clock and the serialized data stream. This meets the synchronization requirements of multi-channel and I/Q communications systems.

Intersil claims power consumption for the ISLA224S25 is just 980mW at 250Msps, compared with 1000mW or higher among competitive serial devices with lower sample rates. For the ISLA214S50, power consumption is just 1050mW compared with 2500mW for competing products, adds Intersil.

The ADCs measure 7 mm x 7 mm in packge size. The ISLA224S and ISLA214S50 are suggested for high performance data acquisition and broadband communications systems, high speed medical imaging systems, microwave receivers and radar or satellite antenna array processing, and other high speed applications. Also, the integrated 8b/10b serializer eliminates the need for an external serializing devices.

Pricing and Availability
The ISLA224S/214S50 ADCs come in 48-pin QFN packages. Prices in 1,000-piece quantities are $79.85 each for the ISLA224S20, $109.79 each for the ISLA224S25, and $185.00 each fr the 214S50.

More info at www.intersil.com