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73M1903C
Modem Analog Front End
DATA SHEET
Page: 2 of 45
2005 TERIDIAN Semiconductor Corporation
Rev 3.4
Table of Contents
DESCRIPTION.............................................................................................................................................. 1
Features ........................................................................................................................................................ 1
Applications................................................................................................................................................... 1
CONTROL REGISTER MAP ........................................................................................................................ 9
ANALOG I/O ............................................................................................................................................... 11
CLOCK GENERATION ............................................................................................................................... 13
MODEM RECEIVER ................................................................................................................................... 19
MODEM TRANSMITTER............................................................................................................................ 23
TEST MODES............................................................................................................................................. 27
POWER SAVING MODES.......................................................................................................................... 27
ELECTRICAL SPECIFICATIONS............................................................................................................... 28
ABSOLUTE MAXIMUM RATINGS.......................................................................................................... 28
RECOMMENDED OPERATING CONDITIONS...................................................................................... 28
DIGITAL SPECIFICATIONS ....................................................................................................................... 29
DC CHARACTERISTICS ........................................................................................................................ 29
AC TIMING .............................................................................................................................................. 30
ANALOG SPECIFICATIONS ...................................................................................................................... 31
DC SPECIFICATIONS ............................................................................................................................ 31
AC SPECIFICATIONS............................................................................................................................. 31
PERFORMANCE..................................................................................................................................... 32
PACKAGE OPTIONS.................................................................................................................................. 34
MECHANICAL DRAWINGS........................................................................................................................ 35
APPENDIX A............................................................................................................................................... 36
73M1903C DAA Resistor Calculation Guide........................................................................................... 36
APPENDIX B............................................................................................................................................... 39
Crystal Oscillator ..................................................................................................................................... 39
PLL .......................................................................................................................................................... 40
Examples of NCO settings ...................................................................................................................... 41
ORDERING INFORMATION....................................................................................................................... 45