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APPLICATION INFORMATION

Testing

SN74LVC1GX04-EP

CRYSTAL OSCILLATOR DRIVER

SGDS029 – SEPTEMBER 2007

After the selection of proper component values, the oscillator circuit should be tested using these components.

To ensure that the oscillator circuit performs within the recommended operating conditions, follow these steps:

1. Without a crystal, the oscillator circuit should not oscillate. To check this, the crystal can be replaced by its

equivalent parallel-resonant resistance.

2. When the power-supply voltage drops, the closed-loop gain of the oscillator circuit reduces. Ensure that the

3. Ensure that the duty cycle, start-up time, and frequency drift over time is within the system requirements.

Copyright © 2007, Texas Instruments Incorporated

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