SN66040B Ver la hoja de datos (PDF) - Sonix Technology Co., Ltd

Número de pieza

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Fabricante

SN66040B

4-Channel Speech Controller

Sonix Technology Co., Ltd 

SN66040B

4-Channel Speech Controller

5.8. IR Function

P33 can be modulated with 42KHz square wave before sent out to P33 pin. The

IR signal can be achieved by this modulated signal.

42KHZ

"1"

PAD

Mode

P33

5.9. 2 8-bit DAC

Two 8-bit current type digital-to-analog converters are built-in SN66040B. The

relationship between 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

VC

VC

C

C

C

VO1

VO2

1K

1K

VO1

VO2

1K

Two Speaker Application

One Speaker Application

Ver: 1.1

6

December 6, 2004

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