AD6643 PDF Datasheet
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Description
This is Dual IF Receiver 1.8V supply voltages Internal ADC voltage reference.
Dual IF Receiver AD6643
FEATURES
Performance with NSR enabled SNR: 76.1 dBFS in a 40 MH- band to 90 MH- at 185 MSPS SNR: 73.6 dBFS in a 60 MH- band to 90 MH- at 185 MSPS Performance with NSR disabled SNR: 66.5 dBFS up to 90 MH- at 185 MSPS SFDR: 88 dBc up to 185 MH- at 185 MSPS Total power consumption: 706 mW at 200 MSPS 1.8 V supply voltages LVDS (ANSI-644 levels) outputs Integer 1-to-8 input clock divider (625 MH- maximum input) Internal ADC voltage reference Flexible analog input range 1.4 V p-p to 2.0 V p-p (1.75 V p-p nominal) Differential analog inputs with 400 MH- bandwidth 95 dB channel isolation, crosstalk Serial port control Energy saving power-down modes User-configurable, built-in self test (BIST) capability
FUNCTIONAL BLOCK DIAGRAM
AVDD AGND DRVDD
AD6643
VIN+A VIN A VCM VIN+B VIN B PIPELINE ADC 14 NOISE SHAPING REQUANTIZER 11 PIPELINE ADC 14 NOISE SHAPING REQUANTIZER 11 DATA MULTIPLEXER AND LVDS DRIVERS
DCO± D0±
D10± OEB
REFERENCE
CLOCK DIVIDER
S.