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參數(shù)資料
| 型號(hào)： | FX818 |
| 元件分類： | Codec |
| 英文描述： | CTCSS Super Codec |
| 中文描述： | 超級(jí)亞音頻編解碼器 |
| 文件頁數(shù)： | 23/26頁 |
| 文件大小： | 676K |
| 代理商： | FX818 |
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CTCSS Signalling Processor
FX818
1997
Consumer Microcircuits Limited
23
D/818/4
Notes
Min.
Typ.
Max.
Units
Audio Band-Pass Filter
Passband
Passband Gain (at 1.0kHz)
Passband Ripple (w.r.t. gain at 1.0kHz)
Stopband Attenuation
Residual Hum and Noise
Alias Frequency
8
8
8
8
300
-
-2
33.0
-
-
-
0
-
-
3000
-
+0.5
-
-
-
Hz
dB
dB
dB
dBp
kHz
-50.0
63
Output Impedances
TX SUB-AUDIO OUT and (Enabled)
RX AUDIO OUT
-
-
2.0
500
-
-
k
k
(Disabled)
Rx Amp and Summing Amp
Open Loop Gain
Unity Gain Bandwidth
Input Impedance
Output Impedance
(I/P = 1mV at 100Hz)
-
-
70.0
5.0
-
6.0
-
-
-
-
dB
MHz
M
k
(at 100Hz)
(Open Loop)
10
-
Transmitter Modulator Drives:
Mod.1 Attenuator
Attenuation (at 0dB)
Cumulative Attenuation Error
(wrt attenuation at 0dB)
Output Impedance
Input Impedance (at 100Hz)
-0.2
-1.0
0
-
0.2
1.0
dB
dB
3
-
-
600
15.0
-
-
k
Mod.2 Attenuator
Attenuation (at 0dB)
Cumulative Attenuation Error
(wrt attenuation at 0dB)
Output Impedance
-0.2
-0.6
0
-
0.2
0.6
dB
dB
3
-
600
-
General Purpose Timer
Timing Period Range
Count Interval
1
-
-
242
-
ms
ms
0.95
Xtal/Clock Input
Pulse Width ('High' or 'Low')
Input Impedance (at 100Hz)
Gain (I/P = 1mVrms at 100Hz)
4
40.0
10.0
20.0
-
-
-
-
-
-
ns
M
dB
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
9.
At V
DD
= 5.0V only. Signal levels or currents are proportional to V
DD
.
Not including any current drawn from the device pins by external circuitry.
Small signal impedance, at V
DD
= 5.0V and Tamb = 25°C.
Timing for an external input to the XTAL/CLOCK pin.
With input gain components set as recommended in Figure 2.
IRQN pin.
From one tone to another tone.
See filter response (Figure 3).
Measured at MOD1 or MOD2 output.
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| FX818D2 | 制造商:CMLMICRO 制造商全稱:CML Microcircuits 功能描述:CTCSS SIGNALLING PROCESSOR |
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| FX826DW | 制造商:CMLMICRO 制造商全稱:CML Microcircuits 功能描述:AMPS / TACS SYSTEM AUDIO PROCESSOR |
| FX826J | 制造商:CMLMICRO 制造商全稱:CML Microcircuits 功能描述:AMPS/TACS System Audio Processor |
| FX828 | 制造商:CMLMICRO 制造商全稱:CML Microcircuits 功能描述:CTCSS/DCS/SELCALL Processor |
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