TP13054BDW

Codecs Overview

The TP13054BDW is a monolithic serial interface combined PCM codec and filter manufactured by Texas Instruments. It integrates transmit high-pass and low-pass filtering, receive low-pass filtering with (sin x)/x correction, active RC noise filters, and μ-Law compatible coder/decoder functions. The device operates on ±5-V supplies (VCC: 4.75 V to 5.25 V; VBB: -4.75 V to -5.25 V) and supports an operating temperature range of -40°C to 85°C. It features a TTL- or CMOS-compatible digital interface and includes internal autozero circuitry and a precision voltage reference.

Codecs Feature Summary

• Integrates complete PCM codec and line filtering functions for full-duplex voice telephone circuits
• Supports μ-Law encoding and decoding with patented circuitry for low channel idle noise
• Includes transmit and receive band-pass filtering prior to encoding and after decoding
• Features automatic power-down capability with standby mode consumption

Codecs Applications

• Line interface for T1 carrier systems
• PABX and central office telephone systems
• Subscriber line concentrators
• Digital-encryption systems
• Digital signal processing

Codecs Procurement Notes

Verify component authenticity through authorized channels as the part may be discontinued. Confirm that the specific DW package variant matches design requirements. Ensure proper handling procedures are followed due to limited built-in ESD protection on CMOS gates. Review datasheet specifications for latch-up prevention and correct power-up sequencing before integration.

Codecs Selection Notes

Select this model specifically for applications requiring μ-Law compatibility, as A-Law variants use different suffixes. Verify that the system master clocks align with the required 1.536 MHz, 1.544 MHz, or 2.048 MHz frequencies. Ensure the design accommodates the asynchronous or synchronous clocking modes supported by the BCLKR/CLKSEL pin configuration.

Codecs Part Context

This component belongs to the TP1305xB family, which serves as an improved version of the National Semiconductor TP3054-X series. It provides pin-for-pin compatibility with legacy TP3054B designs while offering enhanced performance characteristics suitable for modern digital transmission environments.

Codecs Replacement Considerations

The TP3054BDW is a direct functional equivalent within the same product family. Designers should verify that the alternative variant meets the specific μ-Law requirement and temperature range specifications of the original design.