AD9643BCPZ-250

The AD9643BCPZ-250 is a dual 14-bit analog-to-digital converter (ADC) from Analog Devices, capable of sampling rates up to 250 MSPS. It employs a multistage differential pipelined architecture with integrated output error correction logic, providing high dynamic performance. The device achieves a typical SNR of 70.6 dBFS and SFDR of 85 dBc at 185 MHz input frequency, with a typical power consumption of 785 mW at 250 MSPS.

The ADC features differential inputs, an internal voltage reference, and a flexible analog input range of 1.4 V p-p to 2.0 V p-p (1.75 V p-p nominal). It supports simultaneous sampling with 95 dB channel isolation. The data interface is LVDS (ANSI-644 levels) parallel, and an integer 1-to-8 input clock divider allows for maximum 625 MHz input clock. The device operates from a 1.7V to 1.9V analog supply and includes an ADC clock duty cycle stabilizer.

The AD9643BCPZ-250 is housed in a 64-VFQFN Exposed Pad, CSP package (64-LFCSP-VQ 9x9mm) and is designed for surface mount mounting. It operates over the industrial temperature range of -40°C to +85°C. Typical applications include communications receivers, diversity radio systems, multimode digital receivers, and I/Q demodulation systems.