SNC745
16-bit Voice Processor
Input data
Typical value of output current (mA)
0
0
1
3/1024
…
N
n*(3/1024)
3
…
1024
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.
BP0
BN0
SPEAKER
DAC output
PWM output
7
Ver. 1.3
October 23, 2002