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FX818D2 Scheda tecnica(PDF) 23 Page - CML Microcircuits

Il numero della parte FX818D2
Spiegazioni elettronici  CTCSS SIGNALLING PROCESSOR
PDF  26 Pages
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Produttore elettronici  CMLMICRO [CML Microcircuits]
Homepage  http://www.cmlmicro.com
Logo CMLMICRO - CML Microcircuits

FX818D2 Scheda tecnica(HTML) 23 Page - CML Microcircuits

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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
8
300
-
3000
Hz
Passband Gain (at 1.0kHz)
8
-
0
-
dB
Passband Ripple (w.r.t. gain at 1.0kHz)
8
-2
-
+0.5
dB
Stopband Attenuation
8
33.0
-
-
dB
Residual Hum and Noise
-
-50.0
-
dBp
Alias Frequency
-
63
-
kHz
Output Impedances
TX SUB-AUDIO OUT and (Enabled)
-
2.0
-
k
RX AUDIO OUT
(Disabled)
-
500
-
k
Rx Amp and Summing Amp
Open Loop Gain
(I/P = 1mV at 100Hz)
-
70.0
-
dB
Unity Gain Bandwidth
-
5.0
-
MHz
Input Impedance
(at 100Hz)
10
-
-
M
Ω
Output Impedance
(Open Loop)
-
6.0
-
k
Ω
Transmitter Modulator Drives:
Mod.1 Attenuator
Attenuation (at 0dB)
-0.2
0
0.2
dB
Cumulative Attenuation Error
(wrt attenuation at 0dB)
-1.0
-
1.0
dB
Output Impedance
3
-
600
-
Ω
Input Impedance (at 100Hz)
-
15.0
-
k
Ω
Mod.2 Attenuator
Attenuation (at 0dB)
-0.2
0
0.2
dB
Cumulative Attenuation Error
(wrt attenuation at 0dB)
-0.6
-
0.6
dB
Output Impedance
3
-
600
-
Ω
General Purpose Timer
Timing Period Range
1
-
242
ms
Count Interval
-
0.95
-
ms
Xtal/Clock Input
Pulse Width ('High' or 'Low')
4
40.0
-
-
ns
Input Impedance (at 100Hz)
10.0
-
-
M
Ω
Gain (I/P = 1mVrms at 100Hz)
20.0
-
-
dB
Notes:
1.
At VDD = 5.0V only. Signal levels or currents are proportional to VDD.
2.
Not including any current drawn from the device pins by external circuitry.
3.
Small signal impedance, at VDD = 5.0V and Tamb = 25°C.
4.
Timing for an external input to the XTAL/CLOCK pin.
5.
With input gain components set as recommended in Figure 2.
6.
IRQN pin.
7.
From one tone to another tone.
8.
See filter response (Figure 3).
9.
Measured at MOD1 or MOD2 output.



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