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參數(shù)資料
| 型號： | MT8870 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | ISO2-CMOS Integrated DTMF Receiver |
| 中文描述： | ISO2 - CMOS集成雙音多頻接收器 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 215K |
| 代理商： | MT8870 |
ISO
2
-CMOS
MT8870D/MT8870D-1
4-19
Typical figures are at 25 °C and are for design aid only: not guaranteed and not subject to production testing.
*
NOTES
1. dBm= decibels above or below a reference power of 1 mW into a 600 ohm load.
2. Digit sequence consists of all DTMF tones.
3. Tone duration= 40 ms, tone pause= 40 ms.
4. Signal condition consists of nominal DTMF frequencies.
5. Both tones in composite signal have an equal amplitude.
6. Tone pair is deviated by ±1.5 %± 2 Hz.
7. Bandwidth limited (3 kHz ) Gaussian noise.
8. The precise dial tone frequencies are (350 Hz and 440 Hz) ± 2 %.
9. For an error rate of better than 1 in 10,000.
10. Referenced to lowest level frequency component in DTMF signal.
11. Referenced to the minimum valid accept level.
12. Referenced to Fig. 10 input DTMF tone level at -25dBm (-28dBm at GS Pin) interference frequency range between 480-3400Hz.
13. Guaranteed by design and characterization.
MT8870D-1 AC Electrical Characteristics
- V
DD
=5.0V±5%, V
SS
=0V, -40°C
≤
T
O
≤
+85°C , using Test Circuit shown in
Figure 10.
Characteristics
Sym
Min
Typ
Max
Units
Notes*
1
Valid input signal levels (each
tone of composite signal)
-31
+1
dBm
Tested at V
DD
=5.0V
1,2,3,5,6,9
21.8
869
mV
RMS
dBm
2
Input Signal Level Reject
-37
Tested at V
DD
=5.0V
1,2,3,5,6,9
10.9
mV
RMS
dB
3
Negative twist accept
8
2,3,6,9,13
4
Positive twist accept
8
dB
2,3,6,9,13
5
Frequency deviation accept
±1.5%± 2 Hz
2,3,5,9
6
Frequency deviation reject
±3.5%
2,3,5,9
7
Third zone tolerance
-18.5
dB
2,3,4,5,9,12
8
Noise tolerance
-12
dB
2,3,4,5,7,9,10
9
Dial tone tolerance
+22
dB
2,3,4,5,8,9,11
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT8870D | ISO2-CMOS Integrated DTMF Receiver |
| MT8870DC | ISO2-CMOS Integrated DTMF Receiver |
| MT8870DE | ISO2-CMOS Integrated DTMF Receiver |
| MT8870DC-1 | ISO2-CMOS Integrated DTMF Receiver |
| MT8870DE-1 | ISO2-CMOS Integrated DTMF Receiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT8870BE | 制造商:Panasonic Industrial Company 功能描述:RECEIVER |
| MT8870D | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO2-CMOS Integrated DTMF Receiver |
| MT8870DC | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO2-CMOS Integrated DTMF Receiver |
| MT8870DC-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO2-CMOS Integrated DTMF Receiver |
| MT8870DE | 制造商:Microsemi Corporation 功能描述: |
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