SI2457-D-FS Silicon Laboratories Inc, SI2457-D-FS Datasheet - Page 289

• Manufacturer Part Number: SI2457-D-FS
• Description: IC ISOMODEM SYSTEM-SIDE 16SOIC
• Manufacturer: Silicon Laboratories Inc

Specifications of SI2457-D-FS

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Power Line Related Noise
Causes:
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Solutions:
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Unbalanced phone line
High ac leakage supply
Poor CMR in modem
Fix the telephone line.
Ground the system to earth or float completely using a battery.
Use an analog supply with lower ac Leakage
Figure 73. Odd Harmonics of 50 Hz Manifest as Horizontal Lines Spaced at 100 Hz
Rev. 1.3
AN93
289