L64724 LSI Logic Corporation, L64724 Datasheet - Page 272
L64724
Manufacturer Part Number
L64724
Description
Satellite Receiver
Manufacturer
LSI Logic Corporation
Datasheet
1.L64724.pdf
(294 pages)
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D.1 ADC Overview
Figure D.1
QBYPASS[5:0]
D.2 Board Level Interface
D-2
ADCVREFQN
IBYPASS[5:0]
ADCVREFIN
ADCVREFQ
ADCVREFI
ADCVDDQ
ADCVSSQ
ADCVDDI
ADCVSSI
QBIAS
IBIAS
QVIN
IVIN
ADC Connections for L64724
Two 6-bit flash ADCs generate the digitized data stream at the input of
the demodulator. The interconnection of the ADCs with other modules
and their connections with the L64724 I/O pins are shown in
The ADCs require some additional circuitry at the board level.
shows sample circuitry that connects to the ADC-related pins on the
L64724.
A/D Converters
6-bit ADC
6-bit ADC
cp
cp
dout[5:0]
dout[5:0]
adc_bypass
RI[5:0]
RQ[5:0]
Demodulator
p Interface
Figure
Figure D.2
D.1.
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