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LA72910V-TLM-E Datasheet(PDF) 6 Page - ON Semiconductor

Part No. LA72910V-TLM-E
Description  FM Modulator and Demodulator IC
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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LA72910V
No.A0783-6/10
Pin Function
Pin No.
Pin name
FM MOD mode(Outside camera)
FM DEMOD mode(Inside Monitor)
Note
1
Emphasis filter
Emphasis filter connection pin
Non connect(Hi-Z)
If you don’t need, this pin is open.
2
VCC5V
VCC for FM modulation.
VCC for FM demodulation.
3
Main_OUT
FM Output
(Ro=200
Ω:1.8Vp-p)
Video Output
(Ro=1k
Ω:2Vp-p)
Push-pull output
4
Regulator filter
FM modulation block reference
DC power supply.
FM demodulation block reference
DC power supply.
5
VD_IN/FM_IN
VD Input
(Hi: over 2V, Low: under 0.4V)
(VD DET: High)
FM Input
(Recommend Level: 100 to
620mVp-p)
DEMOD mode:Set
3.3V by internal bias.
(34kΩ/66kΩ)
6
Mode control
Set over 2V DC voltage.
Set under 0.4V DC voltage.
Outside camera /
Inside monitor setting.
7
Drop delay
(TC1)
Connect TC1 setting C.
Non connect(Hi-Z)
8
Drop Width
(TC2)
Connect TC2 setting C.
Non connect(Hi-Z)
9
Stand-by control
FM blocks standby control.
(FM block operate: over 2V ,
FM block standby: under 0.4V )
10
FM-DOC-OUT
/2nd-Call control
2nd-Call input, 2nd-Call: Low
(High: over 2V, Low: under 0.4V)
DOC output
(When DO-DET, output is Low)
DEMOD mode:
Open collector output.
11
B-GND
Circuit GND
12
Emphasis Monitor
/FM-AGC filter
Emphasis monitor output
FM AGC control filter (AGC-ON: 0 to
3V DC, AGC-OFF: 4.5V to 5V by
external DC voltage.)
MOD mode: Don’t connect
capacitor.
13
De-emphasis filter
Non connect(Hi-Z)
De-emphasis filter connection pin.
If you don’t need, this pin is open.
14
A-GND
Circuit GND
15
VD control
/De-emphasis out
DFF control
(ON: over 2V, OFF: under 0.4V)
DE-emphasis output
16
Video_IN
Video signal input (from outside CCD
camera: 1Vp-p).
Video signal input (from
de-emphasis block: 0.5Vp-p).
MOD mode: Maximum video input
level is 1.5Vp-p.




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