TP3054WMX/NOPB

Codecs Overview

The TP3054WMX/NOPB is a monolithic PCM CODEC/filter utilizing the A-law encoding format. It integrates an input gain amplifier, active RC pre-filter, switched-capacitor band-pass filter (200 Hz to 3400 Hz rejection), auto-zero circuitry, and companding coder for transmission. The receive section includes an expanding decoder, low-pass filter with sin x/x correction, and power amplifier. It operates on dual ±5V supplies with typical active power of 50 mW and standby power of 3 mW. Digital interfaces are TTL or CMOS compatible.

Codecs Feature Summary

• Complete CODEC and filtering system including transmit high-pass/low-pass filtering, receive low-pass filter with sin x/x correction, and internal precision voltage reference.
• Supports A-law encoding with serial I/O interface and automatic power-down functionality.
• Designed for D3/D4 and CCITT applications with low operating power consumption.

Codecs Applications

• D3/D4 telephony systems
• CCITT standard communication applications

Codecs Procurement Notes

Verify component authenticity through authorized Texas Instruments distributors or certified suppliers. Confirm the ordering suffix matches the specific package and temperature range requirements. Request original manufacturer documentation to validate specifications against current datasheets before integration into design.

Codecs Selection Notes

Select this component for applications requiring A-law PCM encoding in a single-chip solution. Ensure the design supports dual ±5V power supplies and provides appropriate master clocks (1.536 MHz, 1.544 MHz, or 2.048 MHz). Verify that the 16-pin SOIC package fits the board layout constraints.

Codecs Part Context

This device belongs to the Enhanced Serial Interface CODEC/Filter COMBO Family, which also includes the TP3057 (A-law) and parallel interface variants like the TP3051. The family utilizes National Semiconductor's advanced double-poly CMOS process (microCMOS) for fabrication.

Codecs Replacement Considerations

TP3057WMX/NOPB is the A-law variant within the same family. TP3054J or TP3054N offer the same µ-law functionality in different package formats (DIP). Check pin compatibility and thermal requirements when substituting.

Codecs FAQ

What is the difference between the TP3054 and TP3057?

The TP3054 uses µ-law encoding, while the TP3057 uses A-law encoding. Both share identical hardware architecture and pinouts.

How is the device powered down?

The device enters power-down mode by pulling the MCLKR/PDN pin continuously high or by holding both FSX and FSR inputs continuously low.

What clock frequencies are supported?

The device supports master clocks of 1.536 MHz, 1.544 MHz, or 2.048 MHz. Bit clocks can vary from 64 kHz to 2.048 MHz.