CMX808AP4(2003) Просмотр технического описания (PDF) - CML Microcircuits

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CMX808AP4
(Rev.:2003)

Family Radio CTCSS ‘Type 2’ Encoder and Decoder

CML Microcircuits 

Family Radio CTCSS 'Type 2' Encoder and Decoder

1.4 External Components

CMX808A

C1 22pF

C2 22pF

C3 0.1µF

C4 0.1µF

C5 100pF

C6 0.1µF

C7 Note 1

C8 0.1µF

±20%

±20%

±20%

±20%

±20%

±20%

±20%

±20%

R1 1MΩ

R2 22kΩ

R3 100kΩ

R4 Note 1

±5%

±10%

±10%

±10%

X1 4.0MHz ±100ppm

Note: 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:

R3

Gain = −

R4

C7 x R4 should be chosen so as not to compromise the low frequency performance of this

product.

Figure 2 Recommended External Components

 2003 CML Microsystems Plc

6

D/808A/6

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