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No need for a piezo ringer when using the dynamic microphone as tone ringer
Table of Contents
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SCOPE................................................................................................................................................................. 1
KEY FEATURES ................................................................................................................................................. 1
OTHER APPLICABLE DOCUMENTS AND PAPERS ........................................................................................ 1
REVISION STATUS............................................................................................................................................. 1
GENERAL DESCRIPTION .................................................................................................................................. 2
HARDWARE CONFIGURATION......................................................................................................................... 2
6.1 U
SING THE DYNAMIC MICROPHONE AS TONE RINGER
(
SCHEMATIC
:
A
)................................................................. 2
6.1.1
Ringer part ............................................................................................................................................. 2
6.1.2
Microphone amplifier part ...................................................................................................................... 3
6.2 A
MPLIFIER FOR GENERAL PURPOSE APPLICATIONS
(
SCHEMATIC
:
B
) ................................................................... 3
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
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