Family Radio CTCSS 'Type 2' Encoder and Decoder
CMX808A
Notes
Min.
Typ.
Max.
Units
Output Impedances
TX SUB-AUDIO OUT
TX/RX AUDIO OUT
TX/RX AUDIO OUT
VOLUME OUT
(Enabled)
(Enabled)
(Disabled)
(Enabled)
-
-
-
-
2.0
600
500
600
-
-
-
-
kΩ
Ω
kΩ
Ω
7
Rx Amplifier
Open Loop Gain
Unity Gain Bandwidth
Input Impedance
Output Impedance
(I/P = 1mV at 100Hz)
-
70.0
5.0
-
-
-
-
-
dB
MHz
MΩ
kΩ
-
10.0
-
(at 100Hz)
(Open Loop)
6.0
Xtal/Clock Input
Pulse Width ('High' or 'Low')
Input Impedance (at 100Hz)
Gain (I/P = 1mVrms at 100Hz)
4
40.0
10.0
20.0
-
-
-
-
-
-
ns
MΩ
dB
Notes:
1. At V = 5.0V only. Signal levels or currents are proportional to V
.
DD
DD
2. Not including any current drawn from the device pins by external circuitry.
3. IRQN pin.
4. Timing for an external input to the XTAL/CLOCK pin.
5. With input gain components set as recommended in Figure 2.
6. See filter response (Figure 5).
7. Small signal impedance V = 5.0V and Tamb=25°C. A minimum load resistance of
DD
6kΩ is suggested.
1.7.1 Electrical Performance (continued)
5
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
-50
10
100
1,000
10,000
100,000
Frequency (Hz)
Figure 5 Audio Band-Pass Filter Frequency Response
2003 CML Microsystems Plc
19
D/808A/6
CMLMICRO [ CML MICROCIRCUITS ]
