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Sony Semiconductor Electronic Components Datasheet

CXA3108AQ Datasheet

L-band Down Converter IC with On-Chip PLL

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CXA3108AQ
L-band Down Converter IC with On-Chip PLL
Description
The CXA3108AQ is a monolithic IC that down-
converts the L-band (1 to 2 GHz) 1st IF to 2nd IF for
satellite broadcast receivers. It integrates a local
oscillator circuit, double-balanced mixer, IF AGC
amplifier and tuning PLL onto a single chip.
This IC supports both analog and digital satellite
broadcasts, and achieves reduction in the number of
tuner components and smaller size.
Features
On-chip tuning PLL
Supports 2.65 GHz oscillator frequency
Noise figure: 12.5 dB typ. (for IF full gain)
IF AGC gain variation: 46 dB typ.
Wide band IF AGC amplifier (60 to 500 MHz)
Two IF outputs
PLL supports I2C protocol
On-chip high voltage drive transistor for charge
pump
40 pin QFP (Plastic)
Absolute Maximum Ratings (Ta=25 °C)
Supply voltage
VCC –0.3 to +5.5 V
Storage temperature Tstg –55 to +150 °C
Allowable power dissipation
PD 730 mW
(when mounted on a substrate)
Operating Conditions
Supply voltage
Operating temperature
VCC
Topr
4.75 to 5.30 V
–25 to +75 °C
Applications
Analog satellite broadcast tuners (BS/CS)
Digital satellite broadcast tuners (DSS/DVB, etc.)
Structure
Bipolar silicon monolithic IC
Notes on Handling
This IC has a weak electrostatic discharge strength. Take care when handling the 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—
E99904-TE


Sony Semiconductor Electronic Components Datasheet

CXA3108AQ Datasheet

L-band Down Converter IC with On-Chip PLL

No Preview Available !

Block Diagram and Pin Configuration
CXA3108AQ
30 29
28 27 26 25 24 23
22 21
XTAL 31
DGND1 32
NC 33
BUSSW 34
REF
OSC
I2C
Receiver
Shift
Register
Divider
11bit
Phase
Detector
Lock
Det
Charge
Pump
20 EXTIN2
19 EXTIN1
18 DGND2
17 GND
PS1 35
PS2 36
PS3 37
PS4 38
GND 39
IFOUT2 40
SAW
Driver
SAW
Driver
12
Output Port
Driver
Divider
17 bit
Prescaler
1/2, 1/1
STSW
Buffer
OSC
16 OSCB2
15 OSCE2
14 OSCE1
13 OSCB1
OUTPUT SW
IF VCC
3 45
Buffer
Buffer
IF AGC
AMP
MIX
12 RFVCC
11 BIAS
6
78
9 10
—2—


Part Number CXA3108AQ
Description L-band Down Converter IC with On-Chip PLL
Maker Sony Corporation
Total Page 19 Pages
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