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LA72912V Datasheet(PDF) 6 Page - Sanyo Semicon Device

Part No. LA72912V
Description  FM Modulator and Demodulator IC
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Maker  SANYO [Sanyo Semicon Device]
Homepage  http://www.ssdc-jp.com/eng/
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 6 page
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LA72912V
No.A1409-6/12
Block Diagram and Application Circuit Exanple1 Modulation (Outside camera)
1
2
3
4
5
7
8
REG
VD-IN
VD : Hi
FM-OUT
VCC(5V)
FM-stop
12dB-AMP
Video-Mute
Main
Emphasis
-6dB
Clamp
MOD/DEMOD
Control
9
FM-AGC(ON/OFF)
D-LIM
FM-MOD
LPF
FM-AGC-DET
Main De-Emph
24
23
22
21
20
17
MOD : Hi
DEMOD : Lo
→ 5V
Doc-DET
(Doc-LO)
Standby
Control
A-GND
A-VCC
Video-IN
FM-DEMOD/LPF
19
18
LPF
6
FF
10
11
12
16
15
14
13
LPF
ASK-AGC DET
ASK-AGC/ASK-RX
/Comparator
D-GND
LPF
VCC(5V)
ASK-VCC
FM-Stop,Polarity
E(VD) & A(SW)
TC1
TC2
Amp(ON/OFF)
ASK-TX
/Modulator
BPF
ASK-DATA IN
(Hi : CAR-OFF)
ASK-CAR IN
ASK-TX OUT
Standby SW
(Lo : FM-OFF)
(Hi : FM-ON)
ASK-RX IN
ASK-AGC
Filter
(OFF : 4.5V)
ASK-RX
Filter
ASK-RX OUT
(Hi : CAR having)
VDD
Emphasis
Monitor
*2
*2
*1
*1
*1: Open collector Output
*2: Push-Pull Output
Outside camera SW
2nd-call : Lo
Application Circuit Exanple2 Demodulation (Inside monitor)
1
2
3
4
5
7
8
REG
FM-IN
Video-OUT
VCC(5V)
FM-stop
12dB-AMP
Video-Mute
Main
Emphasis
-6dB
Clamp
MOD/DEMOD
Control
9
FM-AGC(ON/OFF)
D-LIM
FM-MOD
LPF
FM-AGC-DET
Main De-Emph
24
23
22
21
20
17
MOD : Hi
DEMOD : Lo
→ GND
Doc-DET
(Doc-LO)
Standby
Control
A-GND
A-VCC
FM-DEMOD/LPF
19
18
LPF
6
FF
10
11
12
16
15
14
13
LPF
ASK-AGC DET
ASK-AGC/ASK-RX
/Comparator
D-GND
LPF
VCC(5V)
ASK-VCC
FM-Stop,Polarity
E(VD) & A(SW)
TC1
TC2
Amp(ON/OFF)
ASK-TX
/Modulator
BPF
ASK-DATA IN
(Hi : CAR-OFF)
ASK-CAR IN
ASK-TX OUT
Standby SW
(Lo : FM-OFF)
(Hi : FM-ON)
ASK-RX IN
ASK-AGC
Filter
(OFF : 4.5V)
ASK-RX
Filter
ASK-RX OUT
(Hi : CAR having)
VDD
*2
*2
*1
*1
*1: Open collector Output
*2: Push-Pull Output
FM-AGC OFF
(OFF : 4.5V)
DOC-OUT
FM-OUT
Control
(ON/OFF)
(FM-OUT)




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