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CXA3218N

Sony Corporation
Part Number CXA3218N
Manufacturer Sony Corporation
Description FM Demodulator for BS/CS
Published Mar 27, 2005
Detailed Description CXA3218N FM Demodulator for BS/CS Description The CXA3218N is the video signal demodulation IC for satellite broadcastin...
Datasheet PDF File CXA3218N PDF File

CXA3218N
CXA3218N

Overview
CXA3218N FM Demodulator for BS/CS Description The CXA3218N is the video signal demodulation IC for satellite broadcasting.
This IC has most of the functions required for demodulation, and provides stable video detection in combination with the CXA3108Q (L-band down converter with PLL).
Features • Built-in IF AGC • Excellent DG/DP characteristics • Keyed AFT input pin to support MUSE reception • 1st AGC control output pin • Single 5 V power supply operation Applications PAL/NTSC system BS tuners, etc.
Structure Bipolar silicon monolithic IC 30P pin SSOP (Plastic) Absolute Maximum Ratings (Ta=25 °C) • Supply voltage VCC –0.
3 to 7.
0 V • Storage temperature Tstg –55 to +150 °C • Allowable power dissipation PD 1000 mW Operating Conditions • Supply voltage • Operating temperature VCC Topr 4.
50 to 5.
50 –35 to +85 V °C 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— E98X25-TE CXA3218N Block Diagram and Pin Configuration (Top View) AGCCNT OSCGND VCODR1 OPAOUT AGCLPF OPAINN OPAINP OSCB2 OSCE2 OSCE1 30 29 28 27 26 25 24 23 22 21 20 19 OSCB1 IFAGC LPFN LPFP 18 17 16 1AGC AGC DET MIX VCO 2AGC DCAMP OFF SET AGCAMP DET AMP AFT MTRX AGC REG 1 MTRXAGC 2 VCC 3 IF IN1 4 IF IN2 5 GND 6 OFFSET 7 DETOUT 8 VREG 9 GCONT 10 AFTDWN 11 AFTUP 12 ANA 13 KEYEDIN 14 SH2 15 SH1 —2— VCODR2 CXA3218N Pin Description Pin No.
Symbol Typical pin voltage Equivalent circuit Description VCC 1 MTRXAGC 2.
0 V to 3.
5 V 100 40k 1 10k GND AGC detection block MTRX-AGC analog output.
2 VCC 5V 10p Positive power supply.
3 IF IN1 3 4 10p 400 5k 5k 2.
3V AGC block IF input.
4 IF IN2 GND 5 GND ...


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