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GENERAL DESCRIPTION

The AD6657A is an 11-bit, 200 MSPS, quad channel intermediate frequency (IF) receiver specifically designed to support multiple antenna systems in telecommunication applications where high dynamic range performance, low power, and small size are desired.

FEATURES

11-bit, 200 MSPS output data rate per channel

Integrated noise shaping requantizer

Performance with NSR enabled

SNR: 76.0 dBFS in 40 MHz band to 70 MHz at 185 MSPS

SNR: 73.6 dBFS in 60 MHz band to 70 MHz at 185 MSPS

SNR: 72.8 dBFS in 65 MHz band to 70 MHz at 185 MSPS

Performance with NSR disabled

SNR: 66.5 dBFS to 70 MHz at 185 MSPS

SFDR: 88 dBc to 70 MHz at 185 MSPS

Low power: 1.2 W at 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