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LA72910V_09 Datasheet(PDF) 8 Page - Sanyo Semicon Device

Part No. LA72910V_09
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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LA72910V
No.A0783-8/10
Continued from preceding page.
Pin No.
Pin Name
Description
Equivalent circuit
7
Drop delay
(TC1)
MOD mode: TC1 filter pin. Please connect C1.
7
200
1k
C1
1k
8
Drop Width
(TC2)
MOD mode: TC2 filter pin. Please connect C1.
8
200
C1
1k
9
Stand-by control
Standby control pin.
FM block standby: under 0.4V DC voltage. (0 to 0.4V)
FM block operate: over 2V DC voltage. (2 to 5V)
9
1k
10
FM-DOC-OUT
/2nd-Call control
DEMOD mode: Drop-out output pin. This pin is open
collector output, so please connect pull up resistor.
MOD mode: 2nd-CALL input. 2nd-CALL input: under
0.4V (0 to 0.4V) DC. Normal: over 2V DC voltage. (2 to
5V)
10
1k
11
B-GND
Circuit GND.
12
Emphasis Monitor
/FM-AGC filter
MOD mode: Emphasis monitor pin.
DEMOD mode: FM AGC filter pin.
If FM AGC no need (=AGC Off),
Please set pin12 voltage over 4.5V DC voltage. (4.5 to
5V)
12
10k
500
C1
100k
AGC-DET
EMP MONI
Continued on next page.




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