Crystal(26 Mhz, X601) - LG KF305 Service Manual

3. TECHNICAL BRIEF

3.6 Crystal(26 MHz, X601)

The AD6548 requires only an external low cost as the frequency reference. The circuitry to oscillate
the crystal and tune its frequency is fully integrated. The Oscillator is a balanced implementation
requiring the crystal to be connected across 2 pins. There is a programmable capacitor array
included for coarse tuning of fixed offsets, and an integrated varactor for dynamic control. The
oscillator is designed for use with a 26MHz crystal. The crystal is connected as shown in figure 3-3.
LGE Internal Use Only
Figure. 3-6-1 Crystal Oscillator External Connection
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