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Sony Semiconductor Electronic Components Datasheet

CXA3038N Datasheet

IQ Detection IC for Digital Satellite Broadcast Tuner

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CXA3038N pdf
CXA3038N
IQ Detection IC for Digital Satellite Broadcast Tuner
Description
The CXA3038N is an IC for IQ-detection of DSS,
DVB, and other digital satellite broadcast QPSK
modulation signals in the 480 MHz band. It consists
of an AGC amplifier circuit, oscillator circuit, phase
shifter circuit, and phase comparison circuit. In
addition, the chip has a PLL circuit for frequency
control and built-in control data. It realizes high-
accuracy oscillator frequencies through use of a low-
cost LC resonance circuit.
Features
Built-in PLL for controlling oscillator frequency.
Oscillator frequency based at 479.5 MHz is
adjustable in ±4 steps of 50 kHz using the voltage
of the control pin.
Reference OSC allows switching to 4 MHz or 10
MHz.
Built-in output buffer for reference OSC.
Low-impedance IQ output.
AGC gain variation 35 dB.
24 pin SSOP (Plastic)
Absolute Maximum Ratings (Ta=25 °C)
Supply voltage
VCC –0.3 to 5.5
Storage temperature Tstg –55 to +150
V
°C
Operating Conditions
Supply voltage
Operating temperature
VCC
Topr
4.75 to 5.30 V
–25 to +75 °C
Applications
Digital satellite broadcast tuner
Structure
Bipolar silicon monolithic IC
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
—1—
E97650A84-TE


Sony Semiconductor Electronic Components Datasheet

CXA3038N Datasheet

IQ Detection IC for Digital Satellite Broadcast Tuner

No Preview Available !

CXA3038N pdf
Block Diagram and Pin Configuration
CXA3038N
24 23 22 21 20 19 18
17
16 15
14 13
Ref OSC
Buffer
Charge
Pump
OSC
Prescaler
1/32
Divider
1/80, 1/200
Phase
DET
Divider
10bit+4bit
Phase
Shifter
DC AMP
LPF
QMIX
Compa-
rator
Buffer
DC AMP
LPF
IMIX
123 4 5 6 7
Buffer
AGC
AMP
8 9 10 11 12
—2—


Part Number CXA3038N
Description IQ Detection IC for Digital Satellite Broadcast Tuner
Maker Sony Corporation
Total Page 16 Pages
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