SNC745

16-bit Voice Processor

Ver. 1.3

October 23, 2002

7

Input data

Typical value of output current (mA)

0

0

1

3/1024

…

N

n*(3/1024)

…

1024

3

PWM: A PWM (pulse width modulation) circuit is built-in SNC745. PWM can convert

input digital data into pulse trains with suitable different pulse width. The maximum

resolution of PWM is 10 bits. Two huge output stage circuits are included in SNC745.

Both of them are capable of driving speaker directly. The recommended application

circuit is as follows.

DAC output

PWM output

SPEAKER

BP0

BN0