- 您現(xiàn)在的位置：買賣IC網 > PDF目錄359240 > MV5089 (Zarlink Semiconductor Inc.) DTMF GENERATOR PDF資料下載
參數(shù)資料
| 型號： | MV5089 |
| 廠商： | Zarlink Semiconductor Inc. |
| 英文描述： | DTMF GENERATOR |
| 中文描述： | 雙音多頻發(fā)生器 |
| 文件頁數(shù)： | 3/7頁 |
| 文件大?。?/td> | 91K |
| 代理商： | MV5089 |
MV5089
2
OUTPUT FREQUENCY
Table 1 shows the output frequency deviation from the
standard DTMF frequencies when a 3.58MHz crystal is used
as the reference.
The row and column output waveforms are digitally
synthesised using R-2R D-to-A converters (see Fig.3),
resulting in staircase approximations to a sinewave. An opamp
mixes these tones to produce a dual-tone waveform. Single
tone distortion is typically better than 7% and all distortion
components of the mixed dual-tone should be 30dB relative to
the strongest fundamental (column tone).
DISTORTION MEASUREMENTS
THD for the single tone is defined by:
Tone Output
Frequency Using
3.5795545 MHz
Crystal
Standard
DTMF
(Hz)
f
1
f
2
f
3
f
4
f
5
f
6
f
7
f
8
697
770
852
941
1209
1336
1477
1633
% Deviation
from Standard
+0.62
+0.19
+0.61
-0.63
+0.57
-0.32
-0.35
+0.73
701.3
771.4
857.2
935.1
1215.9
1331.7
1471.9
1645.0
Column
Row
High
Group
Low
Group
Table 1: Output frequency deviation
100 ( V
2
+ V
2
+ V
2
+ ---- V
2
) %
2f
3f
V
fundamental
4f
nf
100 ( V
2
+ V
2
+ V
2
+ V
2
+ V
2
--- V
2
+ V
2
)
2R
3R
nR
Where V2f --- Vnf are the Fourier components of the waveform.
THD for the dual tone is defined by:
2C
3C
nc
IMD
where
V
ROW
is the row fundamental amplitude
V
COL
is the column fundamental amplitude
V
2R
—V
nR
are the Fourier component amplitudes of the row frequencies
V
2C
—V
nC
are the Fourier component amplitudes of the column frequencies
V
IMD
is the sum of all intermodulation components.
Figure 3: Typical sinewave output (a) Row tones (b) Column tones
COL
V
2
2
ROW
V
OUT
V
OUT
t
t
a)
b)
相關PDF資料 |
PDF描述 |
|---|---|
| MV5290 | Current Limiter Diode |
| MV5291 | Current Limiter Diode |
| MV5292 | Current Limiter Diode |
| MV5293 | Current Limiter Diode |
| MV5294 | Current Limiter Diode |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MV5089-DP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| MV5089MP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Tone Telephone Dialer |
| MV5089-MP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| MV5094A | 功能描述:標準LED-通孔 Hi Eff Red Diffused Bipolar RoHS:否 制造商:Vishay Semiconductors 照明顏色:Red 光強度:0.7 mcd 波長/色溫:615 nm 顯示角:45 deg 透鏡顏色/類型:Clear, Non-Diffused 正向電流:70 mA 正向電壓:1.83 V to 3.03 V LED 大小:2 mm 系列: 封裝:Tube |
| MV5094A | 制造商:Fairchild Semiconductor Corporation 功能描述:LED LAMP ROHS COMPLIANT:NO |
發(fā)布緊急采購，3分鐘左右您將得到回復。