SA3370

HANGZHOU SILAN MICROELECTRONICS CO.,LTD

Rev: 1.0

2005.02.03

Http: www.silan.com.cn

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Pin no.

Pin name

Description

4

HC constant

High cut constant

5

Left channel output

6

Right channel output

7

HCC

When a voltage of 7.5V or higher is applied to this pin, VCO stopped

8

SNC

Forced monaural mode when this pin is connected to ground

9

GND

Ground

10

STLED

Open-collector output can directly drive LED

11, 12

Filter1

Pilot detector low-pass filter

13

FFOUT

19KHz out

14, 15

Filter2

Ripple Filter

16

OSC

Connected a semi-fixed resister

FUNCTION DESCRIPTIONS

1. SNC (stereo noise control) and HCC (high-cut control)

The SA3370 has SNC and HCC terminals for improved S/N ratios when operating in weak radio fields. By

adjusting.

The S/N ratios will be improved through the SNC (stereo noise control) and HCC (high-cut control) terminals.

2. Muting function

Muting in the neighborhood of 37dB are feasible by utilizing HCC functions as muting functions.

3. VCO stopped

When applying a voltage not less than 7V to the HCC terminal, VCO will be stopped and the circuit will work in

monaural mode.

4. Separation control

The separation of SA3370 can be changed by the external semi-resistor.

TEST CIRCUIT