TDA4340X 查看數據表（PDF） - Siemens AG

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TDA4340X

Stereo Decoder/Noise Blanker

Siemens AG 

TDA 4340X

1.4 Pin Definitions and Functions

Pin No. Function

1

Phase detector output, PLL loop filter

2

Oscillator pin (456 kHz)

3

Ground

4

Reference current pin, external reference resistor

5

Positive supply voltage

6

Interference detector input, noise detector input

7

Timing capacitor for monoflop (gate time)

Low voltage applied turns off oscillator, phase detector, pilot detector, SNC

and changes the time constant for HCC, noise gate monoflop

8

Hold capacitor for noise detector average level

Low voltage applied mutes the stereo decoder output, noise level capacitor

9

Auxiliary input left, output amplifier left

10

Audio signal output left

11

Audio signal output right

12

Auxiliary input right, output amplifier right

13

HCC timing/hold capacitor, deemphasis right

14

HCC timing/hold capacitor, deemphasis left

15

Input for HCC voltage

16

Input for SNC voltage

17

Input for reference level control voltage (HCC and SNC)

18

Pilot indicator output, open collector, active low

19

Pilot detector output

Low voltage applied switches the stereodecoder to mono state

20

Input for MPX signal

Semiconductor Group

3

04.96

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