CXD1961AQ 데이터 시트보기 (PDF) - Sony Semiconductor

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CXD1961AQ

DVB-S Frontend IC (QPSK demodulation + FEC)

Sony Semiconductor 

Pin Explanation

1. A/D Converter

Function

Analog signal input

Top reference level input

Bottom reference level input

Analog power supply (+3.3V)

Analog ground

See reference circuit (1)

CXD1961AQ

ADC for I input

Pin No. Pin name

100

IIN

98

RT0

2

RB0

99

AVD0

1

AVS0

ADC for Q input

Pin No. Pin name

95

QIN

93

RT1

97

RB1

94

AVD1

96

AVS1

2. Clock Recovery

2-1. Crystal

Function

Crystal oscillator (output)

Crystal oscillator (input)

Crystal oscillator power supply (+3.3V)

Crystal oscillator ground

See reference circuit (3)

2-2. VCO · OP-Amp

Function

Charge Pump output

Charge pump power supply (+3.3V)

Charge pump ground

VCO control voltage input

VCO enable (H: enable)

OP-Amp negative input

OP-Amp output

VCO · OP-Amp power supply (+3.3V)

VCO · OP-Amp ground

See reference circuit (2)

Pin No.

62

63

60

61

Pin name

XO

XI

AVD3

AVS3

Pin No.

86

84

85

88

92

89

90

87

91

Pin name

CPOUT

AVD4

AVS4

VCOC

VCOEN

OPXIN

OPOUT

AVD2

AVS2

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