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FX105A Datasheet, PDF (5/16 Pages) CML Microcircuits – Tone Detector
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Tone Detector
1.4 External Components
FX105A
C1A See section 1.6
C1B See section 1.6
C2A See section 1.6
C2B See section 1.6
C3A See section 1.6
C3B See section 1.6
C4 See section 1.6
C5 0.27µF ±20%
C6 0.1µF ±20%
R1F See section 1.6
R1V See section 1.6
R2
See section 1.6
RL
20kohm ±20%
RV
See section 1.6
RW
See section 1.6
D1
IN914 or similar
Note s:
1. For improved performance C4 may be chosen to provide 30° phase shift at the VCO
loop filter input.
2. For compatibility with the FX105P; capacitors (C1 .... C4) may be connected to VDD
instead of VSS.
3. For improved de-response time, a diode (D1) may be added.
4. Any value load resistance (RL) may be used, providing the maximum load current does
not exceed the value given in section 1.7.1
Figure 2 Recommended External Components
© 1999 Consumer Microcircuits Limited
5
D/105A/5
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