SNL310

16-Bit LCD Controller

Input data

Typical value of output current (mA)

0

0

1

3/1024

…

n

n*(3/1024)

…

1024

3

7.2 PWM

A PWM (pulse width modulation) circuit is built-in SNL310. 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 SNL310.

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

circuit is as follows.

VCC

BUO1/VO

1K

BUO1/VO

BUO2

DAC output

PWM output

Ver: 1.7

May 2, 2003

7