Micrel
Figure 9. Plotting the Shunt Inductor and Series Capacitor
Crystal Y1 may be either SMT or leaded. It is the
reference clock for all the device internal circuits.
Crystal characteristics of 10pF load capacitance,
30ppm, ESR < 50 ? , -40oC to +85oC temperature
range are desired. Table 5 shows the crystal
frequencies for WB or NB and one of Micrel’s
approved crystal manufacturers ( www.hib.com.br ).
MICRF218
REFOSC (MHz)
9.813135, NB
12.149596, NB
13.021874, NB
13.517827, NB
9.788232, WB
12.118764, WB
12.988829, WB
13.483523, WB
Carrier (MHz)
315
390.0
418.0
433.92
315
390.0
418.0
433.92
HIB Part Number
SA-9.813135-F-10-G-30-30-X
SA-12.149596-F-10-G-30-30-X
SA-13.021874-F-10-G-30-30-X
SA-13.517827-F-10-G-30-30-X
SA-9.788232-F-10-G-30-30-X
SA-12.118764-F-10-G-30-30-X
SA-12.988829-F-10-G-30-30-X
SA-13.483523-F-10-G-30-30-X
Table 5. Crystal Frequency and Vendor Part Number
November 2011
16
M9999-111111
(408) 944-0800
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