Analog Devices AD9643-210EBZ

Evaluation Board For 14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Dual Analog-To-Digital Converter

AD9643 ADC Evaluation Board 210MSPS SPI Controller/VisualAnalog IDE

The AD9643 is a dual 14-bit, analog-to-digital converter (ADC) with sampling speeds up to 250 MSPS. The AD9643 is designed to support communications applications where low cost, small size, wide bandwidth and versatility are desired. The dual ADC core features a multistage, differential pipelined architecture with integrated output error correction logic. Each ADC features wide bandwidth inputs supporting a variety of user-selectable input ranges. An integrated voltage reference eases design considerations. A duty cycle stabilizer is provided to compensate for variations in the ADC clock duty cycle, allowing the converters to maintain excellent performance. The ADC output data are routed directly to the two external 14- bit LVDS output ports and formatted either as interleaved or channel multiplexed. Flexible power-down options allow significant power savings, when desired. Programming for setup and control are accomplished using a 3- wire SPI-compatible serial interface. The AD9643 is available in a 64-lead LFCSP and is specified over the industrial temperature range of -40°C to +85°C. APPLICATIONS Communications Diversity radio systems Multimode digital receivers (3G) TD-SCDMA, WiMax, WCDMA, CDMA2000, GSM, EDGE, LTE I/Q demodulation systems Smart antenna systems General-purpose software radios Ultrasound equipment Broadband data applications PRODUCT HIGHLIGHTS Integrated dual, 14-bit, 170/210/250 MSPS ADC. Operation from a single 1.8V supply and a separate digital output driver supply accommodating LVDS outputs. Proprietary differential input maintains excellent SNR performance for input frequencies up to 300 MHz. SYNC input allows synchronization of multiple devices. 3-pin, 1.8V SPI port for register programming and register readback. Pin compatibility with the AD9613 allowing a simple migration down from 14 bits to 12 bits.