AD9645

Data Sheet Dual, 14-Bit, 80 MSPS/125 MSPS, Serial LVDS 1.8 V Analog-to-Digital Converter AD9645 FEATURES 1.8 V supply operation Low power: 122 mW per channel at 125 MSPS with scalable power options SNR = 74 dBFS (to Nyquist) SFDR = 91 dBc at 70 MHz DNL = ±0.65 LSB (typical); INL = ±1.5 LSB (typical) Serial LVDS (ANSI-644, default) and low power, reduced range option (similar to IEEE 1596.3) 650 MHz full power analog bandwidth 2 V p-p input voltage range Serial port control Full chip and individual channel power-down modes Flexible bit orientation Built-in and custom digital test pattern generation Clock divider Programmable output clock and data alignment Programmable output resolution Standby mode APPLICATIONS Communications Diversity radio systems Multimode digital receivers GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, TD-SCDMA I/Q demodulation systems Smart antenna systems Broadband data applications Battery-powered instruments Handheld scope meters Portable medical imaging and ultrasound Radar/LIDAR GENERAL DESCRIPTION The AD9645 is a dual, 14-bit, 80 MSPS/125 MSPS analog-todigital converter (ADC) with an on-chip sample-and-hold circuit designed for low cost, low power, small size, and ease of use. The product operates at a conversion rate of up to 125 MSPS and is optimized for outstanding dynamic performance and low power in applications where a small package size is critical. The ADC requires a single 1.8 V power supply and LVPECL-/ CMOS-/LVDS-compatible sample rate clock...