SAN3022

sames SAN3021 APPLICATION NOTE SA2531/2 Single Chip Telephone: Using dynamic microphone as tone ringer 1 Scope This Application Note describes how to modify the standard application AN1500A to use a dynamic microphone instead of the standard electret microphone. Additionally, an application is shown, which uses the dynamic microphone as tone ringer. 2 Key Features Updating existing systems using dynamic handset microphone No need for a piezo ringer when using the dynamic microphone as tone ringer Table of Contents 1 2 3 4 5 6 SCOPE................................................................................................................................................................. 1 KEY FEATURES ................................................................................................................................................. 1 OTHER APPLICABLE DOCUMENTS AND PAPERS ........................................................................................ 1 REVISION STATUS............................................................................................................................................. 1 GENERAL DESCRIPTION .................................................................................................................................. 2 HARDWARE CONFIGURATION......................................................................................................................... 2 6.1 USING THE DYNAMIC MICROPHONE AS TONE R...