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參數(shù)資料
| 型號： | MT8843AE |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | CMOS Calling Number Identification Circuit 2 Preliminary Information |
| 中文描述： | 來電號碼識別的CMOS電路2的初步信息 |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 115K |
| 代理商： | MT8843AE |
Preliminary Information
MT8843
5-29
The crystal specification is as follows:
Frequency:
Frequency tolerance:
Resonance mode:
Load capacitance:
Maximum series resistance: 150 ohms
Maximum drive level (mW):
e.g., CTS MP036S
3.579545 MHz
±0.1%(-40°C+85°C)
Parallel
18 pF
2 mW
Any number of MT8843 devices can be connected
as shown in Figure 8 such that only one crystal is
required. The connection between OSC2 and OSC1
can be D.C. coupled as shown, or the OSC1 inputs
on all devices can be driven from a CMOS buffer (dc
coupled) with the OSC2 outputs left unconnected.
VRef and CAP Inputs
V
Ref
is the output of a low impedance voltage source
equal to V
DD/2
and is used to bias the input op-amp.
A 0.1μF capacitor is required between CAP and V
SS
to suppress noise on V
Ref.
Applications
The circuit shown in Figure 9 illustrates the use of the
MT8843 (CNIC2) device in a typical CID or CLIP sys-
tem. Network protection will differ depending on the
market for which the product is designed.
Notes:
CNIC2 has not been fully characterized for talkoff
and talkdown performance as specified in SR-TSV-
002476.
For CIDCW, speech immunity improves if near end
audio is cancelled from the incoming signal. One
possible implementation is to connect the signal
input to the 2 wire side when the CPE is on-hook and
the 4 wire side when the CPE is off-hook.
Figure 9 - Application Circuit
IN+
IN-
GS
V
Ref
CAP
TRIGin
TRIGRC
TRIGout
MODE
OSCin
OSCout
V
SS
V
DD
St/GT
ESt
StD
INT
DR
DATA
DCLK
FSKen
PWDN
IC
CNIC2
CD
(FSK Interface Mode 0 selected)
+5V
= To microcontroller
= From microcontroller
0
TIP / A
RING / B
Notes
MT8843
+5V
+5V
+5V
430K
430K
34K
34K
5
6
464K
500K
500K
200K
300K
5
0.1μF
0.1μF
0.01μF
0.01μF
0
0
420K
420K
0
TISP4180,
TISP5180,
TPA150A12 or
TPB150B12
+5V
100K
For BT network
Note: For CTA applications where there is a requirement to determine
the ring burst duration, the value of R and C may have to be optimized.
C
R
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT8843AS | CMOS Calling Number Identification Circuit 2 Preliminary Information |
| MT8843 | Calling Number Identification Circuit(主叫識別電路（提供各種主叫線信息傳遞設(shè)備的接口）) |
| MT8888C | Integrated DTMF Transceiver with Intel Micro Interface(雙音多頻信號（DTMF）收發(fā)器（帶Intel微接口）) |
| MT8889CC-1 | Integrated DTMFTransceiver with Adaptive Micro Interface |
| MT8889CN-1 | Integrated DTMFTransceiver with Adaptive Micro Interface |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT8843AS | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS Calling Number Identification Circuit 2 Preliminary Information |
| MT8860 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:DTMF DECODER |
| MT8860XC | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:DTMF DECODER |
| MT8860XE | 制造商:Hitachi 功能描述:DTMF RECEIVER, 18 Pin, Plastic, DIP 制造商:Microsemi Corporation 功能描述:DTMF RECEIVER, 18 Pin, Plastic, DIP 制造商:Mitel Networks Corporation 功能描述:DTMF RECEIVER, 18 Pin, Plastic, DIP |
| MT8865 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:DTMF Filter |
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