Analogue Control Interface
FX839
1.4
External Components
C1 22pF
C2 22pF
C3 0.1µF
C4 0.1µF
C5 0.1µF
±20%
±20%
±20%
±20%
±20%
R1 1M
R2 22k
±5%
±10%
X1 Note 1
Notes: 1. If an external clock is to be used, it should be connected to Pin 2 and the components C1, C2,
R1 and X1 omitted. The ADC clock frequency is derived from the crystal or external clock by
means of internal programmable dividers. Refer to Section 1.7 for details of crystal or external
clock frequency range.
Figure 2: Recommended External Components
Consumer Microcircuits Limited
6
1997
D/839/4