PT2395 データシートの表示（PDF） - Princeton Technology

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PT2395

Enhanced Digital Echo IC

Princeton Technology 

Princeton Technology Corp.

Enhanced Digital Echo IC

Tel: 886-2-29162151

Fax: 886-2-29174598

URL: http://www.princeton.com.tw

PT2395

DESCRIPTION

PT2395 is a silicon gate CMOS-processed digital echo IC functionally compatible with M50195P.

Input signal to PT2395 is converted to digital signal with A-D conversion then stored in the memory

(DRAM) chip. After a certain delay time, digital signal is read out from the memory chip and then

converted back into analog signal using the D-A conversion. A low cost echo system may thus be

achieved with PT2395’s A-D converter, D-A converter, incorporating ADM algorithm, while main-

taining lower noise, lower distortion, higher S/N ratio as compared to the conventional BBD (Bucket

Brigate Device). PT2395 further features enhanced functions such as continuous delay time with

external VR (Variable Resistor), 256 K DRAM support for longer delay time (Extended Delay Mode,

up to 800 ms at 4 MHz Clock) as compared to M50195P. Moreover, the distortion and the S/N Ratio

are further improved.

FEATURES

• CMOS Technology

• Available in 40-pin PDIP Package (600 mil)

• Low Noise, Low Distortion Echo System

• 3-Level Delay Time Selectable, with Indicator Output

• On-chip RC Oscillator for Continuous Delay Time

• 64K/256K DRAM chip support

• Extended Delay Mode up to 800 ms Delay Time (without VR)

• Create fascinating echo effect with time delay

APPLICATIONS

• KARAOKE

• Radio Set

• Video Disc Player

• Electronic Musical Instrument

Ref. No. 2395 v1.1

1

Written Dec. 1998

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