SM7181 查看數據表（PDF） - Samhop Mircroelectronics

零件编号

产品描述 (功能)

比赛名单

SM7181

ECHO

Samhop Mircroelectronics 

三合微科股份有限公司

SAMHOP Microelectronics Corp.

SM7181

ECHO

Echo Mode & Surround Mode

SM7181 digitize the audio signal through A/D converter and store the value in a First-in- First-out 8Kbits

SRAM. After 3.2RCms of delay time the value store in the SRAM will be read out and reconstruct by

D/A converter then add with the present sound to become an echo signal output. The echo delay is

control by the RC of Pin 2, Pin 3.

Audio In

Add

Low Pass

Filter

AD Converter

Low Pass

Filter

DA Converter

Echo Mode

ABSOLUTE MAXIMUM RATINGS

( Ta = 25 oC, unless otherwise noted )

Symbol

Vcc

Icc

Pd

Topr

Tstg

Description

Supply voltage

Supply current

Power dissipation

Operation temperature

Storage temperature

Limits

6.5

100

1.7

-20 75

-25 125

SRAM

Unit

V

mA

W

oC

oC

Audio

out

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