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參數(shù)資料
| 型號： | 935008910118 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | TELEPHONE MULTIFUNCTION CKT, PDSO16 |
| 封裝： | 7.50 MM, PLASTIC, SOT-162-1, MS-013AA, SO-16 |
| 文件頁數(shù)： | 22/32頁 |
| 文件大?。?/td> | 253K |
| 代理商： | 935008910118 |
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Philips Semiconductors - PIP - PCD3311C; PCD3312C; DTMF/modem/musical-tone generators
Product Information
PCD3311C;
PCD3312C;
DTMF/modem/musical-
tone generators
Information as of 2003-04-22
Stay informed
Download datasheet
topGeneral description
The PCD3311C and PCD3312C are single-chip silicon gate CMOS integrated circuits. They are intended principally for use in telephone sets to
provide the dual-tone multi-frequency (DTMF) combinations required for tone dialling systems. The various audio output frequencies are
generated from an on-chip 3.58 MHz quartz crystal-controlled oscillator. A separate crystal is used, and a separate microcontroller is required to
control the devices.
Both the devices can interface to I 2 C-bus compatible microcontrollers for serial input. The PCD3311C can also interface directly to all standard
microcontrollers, accepting a binary coded parallel input.
With their on-chip voltage reference the PCD3311C and PCD3312C provide constant output amplitudes which are independent of the operating
supply voltage and ambient temperature.
An on-chip filtering system assures a very low total harmonic distortion in accordance with CEPT recommendations.
In addition to the standard DTMF frequencies the devices can also provide:
q
Twelve standard frequencies used in simplex modem applications for data rates from 300 to 1200 bits per second
q
Two octaves of musical scales in steps of semitones.
file:///G|/imaging/BITTING/CPL/20030424/04232003_9/PHGL/_HTML04232003/PCD3311CP.html (1 of 4) [May-08-2003 2:25:04 PM]
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