LA1867NM 查看數據表（PDF） - SANYO -> Panasonic

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LA1867NM

Car Radio Single-Chip Tuner System

SANYO -> Panasonic 

Continued from preceding page.

Pin

Function

12 MRC output pin

MRC Block Applications

Pin

Function

15 MRC AC input pin

LA1867NM

Unit (resistance:Ω, capacitance:F)

Equivalent internal circuit

Note

Equivalent internal circuit

Note

In methods in which the S-meter AC

components are detected directly, the noise

amplifier gain is determined by R2 and the

30 kΩ internal resistance, as shown in

Figure 1. A certain degree of filtering

characteristics can be provided with

capacitor C1.

In methods in which the S-meter high area

components are detected, or the NC HDF

noise output is detected, the noise amplifier

gain is determined by R2 and 30 kΩ as

shown in Ffigure 2. Here, the frequency

characteristics are determined by C1.

MRC control voltage time

34 constant

MRC control voltage time

34 constant

Time constant setting pin

16 constant

During discharge, the MRC detector time

constant is determined by RS (1 kΩ) and

CA. During charge, it is determined by IC

and CA.

Attack time = CA × RS

(Stereo → mono)

Recovery time = CA × RA

(Mono → stereo)

No. 4619-17/32

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