SM7153 데이터 시트보기 (PDF) - Samhop Mircroelectronics

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SM7153

ELECTRONIC VOLUME CONTROLLER

Samhop Mircroelectronics 

三合微科股份有限公司

SM7153

SAMHOP Microelectronics Corp. ELECTRONIC VOLUME

CONTROLLER

PIN DESCRIPTION

Pin

Symbol

2

L-OUT1

15

R-OUT1

3

L-IN1

14

R-IN1

4

13

A-GND

5

L-IN2

12

R-IN2

6

L-OUT2

11

R-OUT2

7

INH

8

DCO

9

OSC

10

U/D

1

VSS

16

VDD

Description

10dB/step attenuator outputs.

A signal applied to IN is attenuated in 7 steps

from 0dB to 60dB at 10dB/step.

10dB/step attenuator inputs

Analog ground terminal

2 dB/step attenuator inputs

2 dB/step attenuator inputs

A signal applied to IN is attenuated in 5 steps

from 0dB to 8dB at 2 dB/step.

Inhibit terminal.

When this terminal is at ' L ' level, all input/

output cut off and the SM7153 is placed in the

inhibit state.

When at ' H ' level, the SM7153 operates

normally.

DC current output for displaying attenuation.

C, R connecting terminal for the oscillator.

up/down speed of attenuation is decided by

the attenuation up/down control oscillator

according to this time constant.

Attenuation up/down control input terminal.

When this terminal is at ' H ' level, sound

volume is increased synchronising with rise of

the oscillator. Conversely, when this pin is at '

L ' level, sound volume is decreased.

Negative Power Supply

Positive Power Supply (Substrate)

Page 2

V.1.0

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