LA1145 查看數據表（PDF） - SANYO -> Panasonic

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LA1145

FM IF System (Quadrature Detector) for Car Radio

SANYO -> Panasonic 

LA1145 Pin Functions (2)

Pin No.

Function

10

IF input

11

Vref

LA1145, 1145M

Internal Equivalent Circuit

Notes

IF input via the phase shift circuit. The mute

circuit malfunctions and demodulation output

decreases if the voltage level at this pin

drops below 180 mV.

4.8 V

12

VCC

Supply voltage 7.5 to 14 V

13

IF buffer output

14

GND

15

Mute driver

16

S-meter output

FM detection circuit GND

Amount of mute attenuation depends on and

is controlled by the voltage at this pin.

PNP open collector output

17

SD sensitivity setting

18

SD output

Can be used for S-meter output

High active

No. 2725-8/17

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