CMX838D1 View Datasheet(PDF) - CML Microsystems Plc
Part Name
Description
MFG CO.
'CMX838D1' PDF : 71 Pages View PDF
FRS/PMR446/GMRS Family Radio Processor
CMX838
7.1.3 Operating Characteristics
Details in this section represent design target values and are not currently guaranteed.
For the following conditions unless otherwise specified:
Audio Level 0dB ref. = 400mVRMS at 1kHz
VDD = 3.0V to 5.5V, TAMB= -40°C to 85°C
Composite Signal = 400mVRMS at 1kHz + 100mVRMS Noise + 40mVRMS Subaudio Signal
Noise Bandwidth = 5kHz Band Limited Gaussian
DC Parameters
IDD
All Powersaved
Rx Operating
CTCSS +Audio + Synthesizer
CTCSS +Audio
Tx Operating
CTCSS +Audio + Synthesizer
CTCSS +Audio
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
Analog Voltages
DC Voltage at Analog pins
DC voltage at ISET pin
Variation of DC voltage at ISET pin
AC Parameters
TONE Decoder
Sensitivity (Pure Tone)
CTCSS
Composite Signal
Response Time
De-response Time
Frequency Range
CTCSS Encoder
Frequency Range
Tone Frequency Resolution
Tone Amplitude
Tone Amplitude Tolerance
Total Harmonic Distortion
Notes Min. Typ. Max. Units
1, 2
0.2
0.3
mA
11
15.1
mA
2
2.4
mA
11.3 15.4
mA
2.3
2.7
mA
70%
-1.0
90%
3
VDD
30%
VDD
1.0
µA
7.5
pF
VDD
10%
VDD
10
µA
50%
VDD
1.26
V
<10%
4, 11
15
mVRMS
160
ms
160
ms
65
255
Hz
65
255
Hz
0.3
%
4, 11
30
10 -1.0
0
mVRMS
1.0
dB
5
2.0
%
2003 CML Microsystems Plc
65
D/838/8
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