DB1065 Datasheet, PDF (5/23 Pages) CML Microcircuits – CTCSS Encoder / Decoder Development Kit

Absolute Maximum Ratings
B+ Supply Voltage input
+5V Supply Voltage input
Voltage on logic inputs or outputs
Voltage on analog input or outputs
Storage Temperature
Operating Temperature
Min.
-0.30
-0.30
-0.30
-0.40
0.00
0.00
Max.
25.00
7.00
5.30
20.00
85.00
50.00
Units
volts DC
volts DC
volts DC
volts DC
C
C
Note
1
2.2 Operating Characteristics
For the following conditions unless otherwise specified:
T=25C, DC supply voltage B+ = +12VDC, GND = 0V
0dB ref. = 750mVrms (VDD _{= 5VDC)}
Composite CTCSS test Signal: 300 mVrms 1KHz test tone, 75 mVrms band limited 6KHz
gaussian white noise, 30 mVrms CTCSS tone
Xtal Frequency = 4.0mhz, 100ppm max
For additional Operation Characteristics refer to MX-COM MX465 data sheet
Characteristic
Supply voltage
B+ DC Supply Voltage Input
+5V DC Supply Voltage Input
DC Supply Current
Minimum Typical Maximum
8
12
25
3
5
7
6
10
Input Logic specifications for PTT, PTL, CS , MONITOR
Input Low Voltage
1.50
Input High Voltage
3.50
Output Logic Specifications for DECODE (open collector output)
Output Current (sink)
10
Analog Outputs TXOUT, RXOUT, TONEOUT
Impedance
1000
TXOUT Level
RXOUT Level
TONEOUT Level
Analog Inputs TXIN, RXIN
Impedance
750
500
500
1000
TXIN Level
RXIN Level
TX and RX Audio Filter
Total Harmonic Distortion
Output Noise Level (input AC gnd)
Passband
Bandpass Ripple
Passband Gain at 1KHz
CTCSS Decoder
Input signal level
Response Time
Deresponse Time
Upper Decode Band Edge
100
30
300
-1
30
1.005 Fi
300
500
2
2
0
180.00
5
3000
1
436
250
250
.995 Fi+1
Units Note
VDC
VDC
ma
VDC
1
VDC
1
mA

mVrms
mVrms
mVrms

mVrms
mVrms
%THD 2
mVrms
Hz
dB
dB
mVrms
ms
ms
Hz
2
3,4,5
3,4,5
3,6
20480150.001 MX-COM
1996
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