如何测试MAX9485具有晶体的功率等级

摘要： MAX9485就是一个多功能，可编程音频时钟发生器。它由一个VCXO ，小数N分频PLL ， I²C接口。使用MAX9485具有适当的，它是重要的VCXO晶体的功率水平不超过其最高评级。本应用笔记介绍了一种简单的方法测量晶体振荡器的功率水平， MAX9485具有测试结果报告。

Maxim > App Notes > AUDIO CIRCUITS CLOCK GENERATION AND DISTRIBUTION
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Keywords: Audio clock generator, MPEG2, AC-3, fractional-N PLL, VCXO, crystal power level, crystal model, Mar 20, 2006
VCXO power level, I2C programming

APPLICATION NOTE 3736
How to Test the Crystal's Power Level in the MAX9485

Abstract: MAX9485 is a versatile, programmable, audio clock generator. It consists of a VCXO, fractional-N
PLL, and IC interface. To use the MAX9485 appropriately, it is important that the power level of the VCXO's
crystal does not exceed its maximum rating. This application note describes a simple method for measuring
the power level of a crystal oscillator, and reports the test results on the MAX9485.


Introduction

The MAX9485[1, 2] is a cost-effective, progr