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參數(shù)資料
| 型號： | ZL49030DDB |
| 廠商： | ZARLINK SEMICONDUCTOR INC |
| 元件分類： | 信令電路 |
| 英文描述： | Wide Dynamic Range DTMF Receiver |
| 中文描述： | TELECOM, DTMF SIGNALING CIRCUIT, PDSO20 |
| 封裝： | 5.30 MM, MO-150AE, SSOP-20 |
| 文件頁數(shù)： | 6/14頁 |
| 文件大?。?/td> | 353K |
| 代理商： | ZL49030DDB |
ZL49010/1, ZL49020/1, ZL49030/1
Data Sheet
6
Zarlink Semiconductor Inc.
Applications
The circuit shown in Figure 3 illustrates the use of a ZL4902x in a typical receiver application. It requires only a
coupling capacitor (C1) and a crystal or ceramic resonator (X1) to complete the circuit.
The ZL490x0 is designed for user who wishes to tailor the guard time for specific applications. When a DTMF
signal is present, the ESt pin will go high. An external microcontroller monitors ESt in real time for a period of time
set by the user. A guard time algorithm must be implemented such that DTMF signals not meeting the timing
requirements are rejected. The ZL490x1 uses an internal counter to provide a preset DTMF validation period. It
requires no external components. The DStD output high indicates that a valid DTMF digit has been detected.
Figure 3 - Application Circuit for ZL4902x
DTMF/CP Input
C1
X1
1
2
3
4
8
7
6
5
INPUT
OSC2
OSC1
V
SS
V
DD
ESt/DStD
ACK
SD
V
DD
COMPONENTS LIST:
C
1
= 0.1
μ
F
±
10 %
X1 = Crystal or Resonator (3.579MHz)
To microprocessor or
microcontroller
ZL4902x
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ZL49030DDE1 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Wide Dynamic Range DTMF Receiver |
| ZL49030DDF1 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Wide Dynamic Range DTMF Receiver |
| ZL49031 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Wide Dynamic Range DTMF Receiver |
| ZL49031DCA | 制造商:Microsemi Corporation 功能描述: |
| ZL49031DCB | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Wide Dynamic Range DTMF Receiver |
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