SNC21340

1-CH H.Q. Speech Controller

5.10

Push-Pull & DA Output

SNC21340 is an advanced chip to be designed having two optimal methods to play

out the voices. One is DAC and the other is Push-Pull. Upon user’s applications,

user can select either DAC or PWM in his design. Please be aware that only one

method can be activated at a time.

Push-Pull: An 8-level volume control Push-Pull Direct Drive circuit is

stage circuits are designed in SNC21340. With this advanced circuit, the chip is

capable of driving speaker directly without external transistors.

Audio in

0.5 Vdd

VOP

+

+

0.5 Vdd

-

-

VON

Push-Pull Output

DAC: A 12-bit current type digital-to-analog converter is built-in SNC21340

VCC

DACO

1K

Ver: 1.0

November 08, 2006

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