AFE1104E

Analog Front End (AFE) Overview

The AFE1104E is a monolithic analog front-end integrated circuit designed for HDSL and MDSL applications. Fabricated on 0.6μm CMOS technology, it operates from a single +5V analog supply with digital logic compatible with 3.3V or 5V levels. The device integrates transmit pulse forming, differential line driving, receive anti-aliasing filtering, programmable gain amplification, and a 14-bit delta-sigma ADC. It supports T1 (196 kbps) and E1 (1.168 Mbps) bit rates within a 48-pin SSOP package, dissipating 250 mW at 3.3V digital supply.

Analog Front End (AFE) Feature Summary

• Integrated HDSL/MDSL interface supporting T1 and E1 standards
• 14-bit resolution receive channel with programmable gain (0dB to 9dB)
• Compliant transmit power spectral density and pulse templates
• Single +5V analog supply with 3.3V/5V digital compatibility

Analog Front End (AFE) Applications

• T1 and E1 HDSL system designs
• MDSL subscriber line interfaces
• PairGain SPAROW digital signal processor analog front ends

Analog Front End (AFE) Procurement Notes

Verify the marketing status of the AFE1104E as Not Recommended for New Designs (NRND). Confirm RoHS compliance details via official documentation before procurement. Ensure design reviews account for the discontinuation status if planning long-term production.

Analog Front End (AFE) Selection Notes

Select this component for legacy T1/E1 HDSL implementations requiring a single-chip analog solution. Verify that the 48-pin SSOP package fits the target PCB layout. Ensure the system design accommodates the specific 3.3V or 5V digital supply requirements and the +5V analog supply constraint.

Analog Front End (AFE) Part Context

Originally developed by Burr-Brown Corporation, the AFE1104 was acquired by Texas Instruments. The datasheet identifies it as a complete analog interface simplifying HDSL design by reducing size and cost compared to discrete solutions. It connects directly to external compromise hybrids and line transformers.

Analog Front End (AFE) Replacement Considerations

The device is marked NRND. No direct public substitute part numbers are listed in the provided documentation. Designers should evaluate newer TI HDSL transceivers or discrete alternatives for new designs.