SNC678(2003) Просмотр технического описания (PDF) - Sonix Technology Co., Ltd

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Компоненты Описание

производитель

SNC678
(Rev.:2003)

4-Channel Speech Controller

Sonix Technology Co., Ltd 

SNC678

4-Channel Speech Controller

5.8 IR Function

P33 can be modulated with 38.5KHz square wave before sent out to P33 pin. The IR

signal can be achieved by this modulated signal.

38.5KHZ

"1"

PAD

Mode

P33

5.9 8-bit DAC

An 8-bit current type digital-to-analog converter is built-in SNC678. The relationship

between of input digital data and output analog current signal is listed in the following

table. Also, the recommended application circuit is illustrated as follows.

Input data

0

1

…

N

…

255

Typical value of output current (mA)

0

3/255

n*(3/255)

3

VC

C

VO

1K

S NC678

D/A S pe a ke r Applica tion

Ver: 1.2

7

August 26, 2003

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