(China (Mainland))
Product Summary
The AM7911PC is a WORLD—CHIP FSK Modem. AMD currently offers three single-chip modems in the Frequency Shift Keying (FSK) series including the The AM7911PC. This The AM7911PC includes most of the building blocks required for a complete communication system. Some of the on chip features include: anatog-to-digital and digital to analog converters, internal crystal oscillator, and the essentia! RS-232/CCITT V.24 terminal control signals with TTL levels. A DAA (Data Access Arrangement) or acoustic coupler must be supplied externally to provide the Phone Line Interface. The FSK modem chips all have the same basic structure as shown in the simplified block diagram. The Am7910 and the The AM7911PC differ mainly in timing parameters with the The AM7911PC being tailored for better performance in leased-line, multidrop applications. The Am7911 also includes an extended set of modem selection modes.
Parametrics
AM7911PC absolute maximum ratings: (1)Storage Temperature: －65 to +125°C; (2)Ambient Temperature with Power Applied Commercial (C)Devices: 0 to +70°C, Industrial (I)Devices: －40 to +85°C, Extended (E)Devices: －55 to +125°C; (3)VccWith Respect to DGND: +6 V / －4 V; (4)VBB with Respect to DGND: －6 V / + 4 V.
Features
AM7911PC features: (1)Complete FSK Modem in 28-pin package; (2)300 bps full-duplex operation; (3)1200 bps half-duplex operation; (4)1200 bps full-duplex on four-wire; (5)Compatible with Bell 103/113/108, Bell 202 CCITT V.21, : and V.23; (6)Available in CDIP, PDIP，and PLCC packages.
Diagrams
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