MX633 Datasheet, PDF (5/11 Pages) Microsemi Corporation – CALL PROCRESS TONE DETECTOR

Call Progress Tone Detector
5
3. External Components
MX633 - PRELIMINARY INFORMATION
XTAL/
C1
CLOCK
R1
C2
X1
XTAL
ENABLE
1
8
2
7
MX633P
3
6
V_DD C4
DETECT2
V_SS
DETECT1
4
SIGIN
5
C3
Figure 2: Recommended External Components
R1
1 MΩ
±10%
C1
33pF
±20%
C2
33pF
±20%
C3
560pF at 3.3V_DD
±20%
1nF at 5.0V_DD
C4
1.0µF
±20%
X1
Note 1
3.579545MHz refer to sec.5.1
Table 2: Recommended External Components
Notes:
1. For best results, a crystal oscillator design should drive the clock inverter input with signal levels of at least 40% of
V_DD, peak to peak. Tuning fork crystals generally cannot meet this requirement. To obtain crystal oscillator design
assistance, consult your crystal manufacturer.
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