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
SCOPE................................................................................................................................................................. 1
KEY FEATURES ................................................................................................................................................. 1
OTHER APPLICABLE DOCUMENTS AND PAPERS ........................................................................................ 1
REVISION STATUS............................................................................................................................................. 1
7
APPLICATION SCHEMATIC:............................................................................................................................. 4
8
LIABILITY AND COPYRIGHT STATEMENT...................................................................................................... 5
3 Other applicable documents and papers
Application Note AN1500A: SA2532K Single Chip Telephone Demo Board
4 Revision status
SAN3021 Application Note (this document)
SAN3021 Schematic
Rev. 1.1
SAN3021
PDS038-SA2531/2-004
Rev. B
21-03-00
SAMES [ SAMES ]
