LA3460 查看數據表（PDF） - SANYO -> Panasonic

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LA3460

FM NC + MPX Demodulator for Car Stereo Tuners

SANYO -> Panasonic 

Pin Functions

[NC]

Pin

Function

23 Noise canceller input

LA3460M

Unit (resistance: Ω, capacitance: F)

Internal equivalent circuit

Remarks

The input impedance is about 50 kΩ.

1 Noise canceller

AGC sensitivity

2 adjustments

After setting up medium field (about 50 dBµ)

reception with the noise sensitivity setting pin

(pin 1), set up weak field (20 to 30 dBµ) reception

with the AGC adjustment pin (pin 2).

3

Monostable multivibrator

time constant

Set this time constant so that the gate time is

about 30 µs.

Increasing the gate time improves the noise

exclusion efficiency. However, care is required

since the apparent distortion due to multipath or

overmodulation will increase.

Continued on next page.

No. 4842-5/13

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