PT2392

Digital Echo with MIC Mixing Amp

Tel: 886-2-66296288 Fax: 886-2-29174598 http://www.princeton.com.tw 2F, No. 233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan

DESCRIPTION

The PT2392 is a CMOS IC that has a microphone

peripheral circuit and an echo generation circuit for

karaoke use, on a single chip.

APPLICATIONS

 Wireless Microphone

 Karaoke System

 Consumer Audio Applications

 Car Entertainment System

FEATURES

 High-performance digital echo circuit using 44-

Kbit RAM.

 wide delay time from 45 to 333ms in

22ms/step(typ.)

 A mic amplifier with an ALC makes it possible to

handle overload input, and the ALC operating

voltage are controlled by I

C Bus or externally

set to the desired value.

 Built-in vol, bass,middle,treble,echo_vol,

fb_volume,sub_vol and controlled by I

C Bus .

 Built-in HP Driver and DEPOP.

 Built-in MIC_bias.

 Internal micmixing amplifier.

 Master volume from +15dB to -79dB in 1dB/step.

 bass,middle,treble from +15dB to -15dB in

1dB/step.

 echo_vol ,sub_vol from 0dB to -28dB in

2dB/step.

 fb_vol from -2dB to -8dB in 1dB/step.

BLOCK DIAGRAM