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參數(shù)資料
| 型號： | MT8843 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | 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）) |
| 中文描述： | 主叫號碼識別電路（主叫識別電路（提供各種主叫線信息傳遞設(shè)備的接口）） |
| 文件頁數(shù)： | 13/26頁 |
| 文件大?。?/td> | 178K |
| 代理商： | MT8843 |
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MT8843
5-43
AC Electrical Characteristics - Timing Parameter Measurement Voltage Levels
a. dBV = decibels above or below a reference voltage of 1Vrms. Signal level is per tone.
b. dBm = decibels above or below a reference power of 1mW into 600 ohms, 0dBm = 0.7746Vrms. Signal level is per tone.
c. Twist = 20 log (f
H
amplitude / f
L
amplitude).
*Notes:
1. Both tones have the same amplitude.
2. Band limited random noise 300-3400Hz. Measurement valid only when tone is present.
=
AC Electrical Characteristics are over recommended operating conditions, unless otherwise stated.
Typical figures are at 25
o
C and are for design aid only:not guaranteed and not subject to production testing
AC Electrical Characteristics
- Idle State Alert Tone Detection
Characteristic
Sym
Min
Typ
Max
Unit
Notes*
1
Low tone frequency
f
L
f
H
-
2130
-
Hz
2
High tone frequency
-
2750
-
Hz
3
Frequency deviation accept
±1.1%
-
-
range within
which tones are
accepted
4
Frequency deviation reject
±3.5%
-
-
ranges outside of
which tones are
rejected
5
Accept signal level per tone
-40
-37.78
-
-2
0.22
dBV
a
dBm
b
6
Reject signal level per tone
-
-
-46
-43.78
dBV
dBm
dB
c
7
Positive and negative twist
accept
7
-
-
8
Signal to Noise Ratio
SNR
TONE
20
-
-
dB
1,2
Characteristics
Sym
Level
Units
Notes
1
CMOS Threshold Voltage
V
CT
V
HM
V
LM
0.5*V
DD
0.7*V
DD
0.3*V
DD
V
2
Rise/Fall Threshold Voltage High
V
3
Rise/Fall Threshold Voltage Low
V
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| MT8888C | Integrated DTMF Transceiver with Intel Micro Interface(雙音多頻信號（DTMF）收發(fā)器（帶Intel微接口）) |
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| MT8889CN-1 | Integrated DTMFTransceiver with Adaptive Micro Interface |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT8843AE | 制造商:Mitel Networks Corporation 功能描述:TELEPHONE CALLING NO IDENT CKT, PDIP24 |
| 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 |
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