MDT2020(DF)

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P. 15

2005/6

VER 1.3

13. External Capacitor Selection For Crystal Oscillator

Osc. Type

Resonator Freq.

C1

C2

20 MHz

5 pF ~10 pF

10 pF~30 pF

HF

10 MHz

10 pF ~50 pF

20 pF ~100 pF

4 MHz

10 pF ~50 pF

20 pF ~100 pF

10 MHz

10 pF ~30 pF

10 pF ~50 pF

XT

4 MHz

10 pF ~50 pF

20 pF ~100 pF

1 MHz

10 pF ~30 pF

20 pF ~50 pF

1 MHz

3 pF ~5 pF

3 pF ~5 pF

LF

455 K

10 pF ~30 pF

20 pF ~50 pF

32 K

10 pF ~20 pF

15 pF ~30 pF

MDT2020

OSC1

OSC2

C1

C2

To increase the stability of oscillator and the ability of anti-noise, the above values of the external

capacitor range can be recommended for reference, but the higher capacitance also increases

the start-up time.