STLC7550TQF7

Analog Front End (AFE) Overview

The STLC7550TQF7 is a low-power, low-voltage Analog Front End (AFE) designed for V.34bis and 56Kbps modem applications. It integrates 16-bit oversampling Sigma-Delta A/D and D/A converters with a sampling frequency up to 9.6kHz at 3V. The device achieves an 83dB signal-to-noise ratio and an 87dB dynamic range. Filter bandwidths are set at 0.425 times the sampling frequency. It operates on a single power supply ranging from 2.7V to 5.5V, consuming less than 30mW in active mode and under 3mW in standby. The component utilizes a TQFP48 package.

Analog Front End (AFE) Feature Summary

• Integrates 16-bit oversampling Sigma-Delta A/D and D/A converters
• Provides 83dB signal-to-noise ratio and 87dB dynamic range at 3V
• Supports V.34bis and 56Kbps modem signal processing
• Features synchronous serial interface for master or slave operations

Analog Front End (AFE) Applications

• Hand Held PCs (HPC)
• Personal Digital Assistants (PDA)
• Webphones
• Network Computers
• Set Top Boxes for Digital Television

Analog Front End (AFE) Procurement Notes

Verify the specific ordering suffix for packaging requirements. The STLC7550TQF7 variant is supplied in tubes, while the TR suffix indicates tape and reel packaging. Confirm that the 0 to 70°C temperature range aligns with the target system environment before procurement.

Analog Front End (AFE) Selection Notes

Select this component when host processors handle modulation software for standalone appliances. Ensure the design accommodates the 2.7V to 5.5V single supply range. Verify external filter requirements, as the internal smoothing filter necessitates off-chip components to achieve flat passband response.

Analog Front End (AFE) Part Context

This part belongs to the STLC7550 family of analog front ends. It is functionally compatible with the STLC7546 mode of operation. The device is manufactured using a 0.50µm CMOS process technology, optimized for battery-powered applications requiring low power dissipation.

Analog Front End (AFE) Replacement Considerations

The STLC7550TQF7TR serves as the tape and reel alternative to the tube-packaged STLC7550TQF7. Both variants share identical electrical characteristics and pinouts within the same temperature range.