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PT2395 Datasheet

  • PT2395

  • Enhanced Digital Echo Processor

  • 4頁

  • ETC

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Princeton Technology Corp.
Enhanced Digital Echo IC
DESCRIPTION
Tel: 886-2-29162151
Fax: 886-2-29174598
URL:
http://www.princeton.com.tw
PT2395
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鈥檚 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
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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
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KARAOKE
Radio Set
Video Disc Player
Electronic Musical Instrument
Ref. No. 2395 v1.1
1
Written Dec. 1998

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