LA72910V

No.A0783-8/10

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Pin No.

Pin Name

Description

Equivalent circuit

7

Drop delay

(TC1)

MOD mode: TC1 filter pin. Please connect C1.

7

200

Ω

1k

Ω

C1

1k

Ω

8

Drop Width

(TC2)

MOD mode: TC2 filter pin. Please connect C1.

8

200

Ω

C1

1k

Ω

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

Ω

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

Ω

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

Ω

500

Ω

C1

100k

Ω

AGC-DET

EMP MONI

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