CMX808AE3 CML Microcircuits, CMX808AE3 Datasheet - Page 6

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

Family Radio CTCSS 'Type 2' Encoder and Decoder
1.4
Note:
1999 Consumer Microcircuits Limited
External Components
1.
R3, R4, C5 and C7 form the gain components for the Rx Input Amplifier. R4 should be
chosen as required by the signal level, using the following formula:
C7 x R4 should be chosen so as not to compromise the low frequency performance of this
product.
C1
C2
C3
C4
C5
C6
C7
C8
22pF
22pF
0.1µF
0.1µF
100pF
0.1µF
Note 1
0.1µF
Figure 2 Recommended External Components
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
Gain =
6
R4
R3
R1
R2
R3
R4
X1
1M W
22k W
100k W
Note 1
4.0MHz
±5%
±10%
±10%
±10%
±100ppm
CMX808A
D/808A/5