AD6657

Data Sheet FEATURES 11-bit, 200 MSPS output data rate per channel Integrated noise shaping requantizer (NSR) Performance with NSR enabled SNR: 75.5 dBFS in 40 MHz band to 70 MHz @ 185 MSPS SNR: 73.7 dBFS in 60 MHz band to 70 MHz @ 185 MSPS Performance with NSR disabled SNR: 66.5 dBFS to 70 MHz @ 185 MSPS SFDR: 83 dBc to 70 MHz @ 185 MSPS Low power: 1.2 W @ 185 MSPS 1.8 V analog supply operation 1.8 V LVDS (ANSI-644 levels) output 1-to-8 integer clock divider Internal ADC voltage reference 1.75 V p-p analog input range (programmable to 2.0 V p-p) Differential analog inputs with 800 MHz bandwidth 95 dB channel isolation/crosstalk Serial port control User-configurable built-in self-test (BIST) capability Energy-saving power-down modes APPLICATIONS Communications Diversity radio and smart antenna (MIMO) systems Multimode digital receivers (3G) WCDMA, LTE, CDMA2000 WiMAX, TD-SCDMA I/Q demodulation systems General-purpose software radios Quad IF Receiver AD6657 08557-001 FUNCTIONAL BLOCK DIAGRAM AVDD AGND DRVDD DRGND VIN+A VIN–A VCMA VIN+B VIN–B VCMB VIN+C VIN–C VCMC VIN+D VIN–D VCMD AD6657 PIPELINE 14 NOISE SHAPING 11 ADC REQUANTIZER 14 11 PIPELINE NOISE SHAPING ADC REQUANTIZER 14 PIPELINE NOISE SHAPING 11 ADC REQUANTIZER 14 PIPELINE NOISE SHAPING 11 ADC REQUANTIZER DATA MULTIPLEXER AND LVDS DRIVERS DC0±AB D0±AB PORT A D10±AB DC0±CD D0±CD PORT B D10±CD REFERENCE SERIAL PORT CLOCK DIVIDER MODE SYNC PDWN SCLK SDIO CSB Figure 1. CLK+ CLK– PRODUCT HIGHLIG...