SI2493-C-FS Silicon Laboratories Inc, SI2493-C-FS Datasheet - Page 205

• Manufacturer Part Number: SI2493-C-FS
• Description: IC ISOMODEM SYSTEM-SIDE 16SOIC
• Manufacturer: Silicon Laboratories Inc

Specifications of SI2493-C-FS

• Mfg Application Notes: SI2493/57/34/15/04, Appl Note AN93
• Data Format: V.21, V.22, V.23, V.29, V.32, V.34, V.90, V.92, Bell 103, Bell 212A
• Baud Rates: 56k
• Interface: UART
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Power Line Related Noise
Causes:
Solutions:
Unbalanced Phone Line
High AC Leakage supply
Poor CMR in Modem
Fix Phone Line.
Ground the system to earth or Float completely via battery.
Use analog supply with lower ac Leakage
Figure 73. Odd Harmonics of 50 Hz Manifest as Horizontal Lines Spaced at 100 Hz
Rev. 0.9
AN93
205