ia3222 integration, ia3222 Datasheet - Page 3

• Manufacturer Part Number: ia3222
• Description: Ia3222/ia3223 Ez Daa? Chipset With Analog Interface
• Manufacturer: integration

IA3222/IA3223
Line Reversal .............................................................................................................................................................................31
Line Activity ................................................................................................................................................................................31
Line in Use and Line Disconnect ................................................................................................................................................32
The LineStat Pin as Interrupt (On Hook) ....................................................................................................................................32
Audio Snooping..........................................................................................................................................................................32
Theory of Operation— Off-Hook Line Status..............................................................................................................................32
Line Drop....................................................................................................................................................................................33
Parallel Pickup ...........................................................................................................................................................................33
The LineStat Pin as Interrupt (Off Hook) ....................................................................................................................................33
Measuring Loop-Current Changes through the Received Audio signal......................................................................................34
SURGES, ISOLATION AND EMC .............................................................................................................................................35
Safety Isolation and Differential Surges .....................................................................................................................................35
Power-Line Cross.......................................................................................................................................................................37
Common-Mode Noise from the Mains Supply............................................................................................................................38
EMC ...........................................................................................................................................................................................39
RF Susceptibility ........................................................................................................................................................................39
RETURN LOSS AND TRANS-HYBRID RETURN LOSS ..........................................................................................................40
PACKAGE INFORMATION .......................................................................................................................................................42
QSOP-16 and QSOP-20 Packages............................................................................................................................................42
MSOP-10 Package.....................................................................................................................................................................42
SOIC-8 Package (JEDEC Outline MS-012AA)...........................................................................................................................42
ORDERING INFORMATION......................................................................................................................................................43
3