
W742S819
4-BIT TELEPHONE CONTROLLER
Publication Release Date: Aug. 23, 2005
- 1 -
Revision A1
Table of content-
1.
2.
3.
4.
5.
6.
7.
GENERAL DESCRIPTION ......................................................................................................... 2
FEATURES................................................................................................................................. 2
PIN CONFIGURATION............................................................................................................... 3
PIN DESCRIPTION..................................................................................................................... 4
BLOCK DIAGRAM...................................................................................................................... 5
ABSOLUTE MAXIMUM RATINGS ............................................................................................. 6
DC CHARACTERISTICS............................................................................................................ 6
7.1
DC CHARACTERISTICS: VDD-VSS=3.0V.................................................................... 6
7.2
DC CHARACTERISTICS: VDD-VSS=3.6V.................................................................... 9
AC CHARACTERISTICS............................................................................................................ 9
APPLICATIONS INFORMATION.............................................................................................. 10
9.1
Operating Voltage......................................................................................................... 10
9.2
Drive Abilities of OP-AMPs........................................................................................... 10
9.3
FSK Signal Detection and FSK Demodulation............................................................. 10
9.3.1
9.3.2
REVISION HISTORY................................................................................................................ 11
8.
9.
FSK Signal Detection ...................................................................................................10
FSK demodulation........................................................................................................10
10.