CMX808AE3 CML Microcircuits, CMX808AE3 Datasheet - Page 18

• Manufacturer Part Number: CMX808AE3
• Description: Family Radio CTCSS Type 2 Encoder and Decoder
• Manufacturer: CML Microcircuits

Family Radio CTCSS 'Type 2' Encoder and Decoder
1.7.1.3 Operating Characteristics
For the following conditions unless otherwise specified:
DC Parameters
AC Parameters
1999 Consumer Microcircuits Limited
"C-BUS" Interface
Audio Attenuator
Nominal Adjustment Range
Attenuation Accuracy
Step Size
I
I
At V
I
I
Input Logic "1"
Input Logic "0"
Input Leakage Current (Logic "1" or "0")
Input Capacitance
Output Logic "1" (I
Output Logic "0" (I
"Off" State Leakage Current (Vout = V
CTCSS Decoder
Sensitivity
Response Time
De-Response Time
Frequency Range
CTCSS Encoder
Frequency Range
Tone Frequency Resolution
Tone Amplitude Tolerance
Total Harmonic Distortion
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
At V
DD
DD
DD
DD
(powersaved)
(Encoder or Decoder only Operating)
(powersaved)
(Encoder or Decoder only Operating)
DD
Xtal Frequency = 4.0MHz
Audio Level 0dB ref. = 308mVrms at 1kHz
V
Composite Signal = 308mVrms at 1kHz + 75mVrms Noise + 31mVrms Sub-Audio Signal
Noise Bandwidth = 5kHz Band Limited Gaussian
DD
DD
= 5.0V
= 3.0V
= 3.0V to 5.0V, Tamb = -40°C to +85°C.
OH
OL
= 360µA)
= 120µA)
(Pure CTCSS Tone)
(Composite Signal)
(Composite Signal)
DD
)
18
Notes
Notes
1
6
6
6
6
2
2
2
2
3
5
Min.
60.0
60.0
30.0
Min.
-1.0
-2.0
-1.5
70%
90%
350
-1.0
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Typ.
-26.0
-50.0
62.5
Typ.
140
145
3.0
1.6
0.2
1.3
0.5
3.2
0
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Max.
+1.0
3000
Max.
+0.5
30%
10%
10.0
251
251
1.5
0.3
0.3
2.0
0.8
4.8
1.0
7.5
48
-
-
-
-
-
-
-
-
-
-
-
Units
Units
dBp
kHz
V
V
V
V
ms
ms
CMX808A
mA
mA
mA
mA
dB
Hz
Hz
dB
Hz
dB
dB
dB
dB
dB
dB
µA
pF
µA
%
%
D/808A/5
DD
DD
DD
DD