FX818D5 View Datasheet(PDF) - CML Microsystems Plc
Part Name
Description
MFG CO.
'FX818D5' PDF : 26 Pages View PDF
CTCSS Signalling Processor
FX818
Operating Characteristics
For the following conditions unless otherwise specified:
Xtal Frequency = 4.032MHz
Audio Level 0dB ref = 308mVrms at 1kHz
VDD = 3.3V to 5.0V, Tamb = -40°C to +85°C.
Composite Signal = 308mVrms at 1kHz + 75mVrms Noise + 31mVrms Sub-Audio Signal
Noise Bandwidth = 5kHz Band Limited Gaussian
Notes Min. Typ. Max.
Units
DC Parameters
At VDD = 3.3V
IDD (powersaved, VDD = 5.0V)
IDD (powersaved, VDD = 3.3V)
IDD (Tx/Rx Operating VDD = 5.0V)
IDD (Tx/Rx Operating VDD = 3.3V)
1, 2
-
0.6
1.0
mA
1, 2
-
0.35
0.6
mA
1, 2
-
3.5
6.0
mA
1, 2
-
1.6
2.5
mA
"C-BUS" Interface
Input Logic "1"
Input Logic "0"
Input Leakage Current (Logic "1" or "0")
Input Capacitance
Output Logic "1" (IOH = 120µA)
Output Logic "0" (IOL = 360µA)
"Off" State Leakage Current (Vout = VDD)
70%
-
-
-
-1.0
-
-
-
90%
-
-
-
6
-
-
-
30%
1.0
7.5
-
10%
10
VDD
VDD
µA
pF
VDD
VDD
µA
AC Parameters
CTCSS Decoder
Sensitivity
(Pure CTCSS Tone) 5
-
-26.0
-
dB
Response Time
(Composite Signal)
-
140
-
ms
De-Response Time
(Composite Signal)
-
145
-
ms
Frequency Range
60
-
253
Hz
CTCSS Detector - Fast Detect
Sensitivity
(Pure CTCSS Tone) 5
-
-26.0
-
dB
Response Time
(Composite Signal)
-
56.0
-
ms
Frequency Range
60
253
Hz
CTCSS Detector - Fast Predictive
Sensitivity
(Pure CTCSS Tone) 5
-
-26.0
-
dB
Response Time
(Composite Signal)
7
-
37.0
-
ms
Frequency Range
60
-
253
Hz
Decode Bandwidth
-
40
-
Hz
CTCSS Encoder
Frequency Range
Tone Frequency Resolution
Tone Amplitude Tolerance
Total Harmonic Distortion
60
-
253
Hz
-
-
0.3
%
1
-1.0
0
+1.0
dB
9
-
2.0
-
%
© 1997 Consumer Microcircuits Limited
22
D/818/4
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