TP3057N

Codecs Overview

The TP3057N is an A-law monolithic PCM CODEC/filter utilizing a switched-capacitor architecture. It operates on dual ±5V supplies with typical active power consumption of 50 mW and standby power of 3 mW. The device supports master clocks of 1.536 MHz, 1.544 MHz, or 2.048 MHz and bit clocks ranging from 64 kHz to 2.048 MHz. It features TTL/CMOS compatible digital interfaces and includes internal auto-zero circuitry and precision voltage references.

Codecs Feature Summary

• Complete CODEC and filtering system including transmit high-pass and low-pass filtering, receive low-pass filter with sin x/x correction, and active RC noise filters.
• A-law compatible COder and DECoder with internal precision voltage reference and serial I/O interface.
• Designed for D3/D4 and CCITT applications with automatic power-down capabilities.

Codecs Applications

• D3/D4 telephony systems
• CCITT standard communication applications

Codecs Procurement Notes

Verify the specific package configuration and manufacturer origin when sourcing this component. Confirm that the device meets the required operational temperature range and electrical specifications for the intended application environment before finalizing procurement decisions.

Codecs Selection Notes

Select the TP3057N specifically for applications requiring A-law encoding standards. Ensure the design accommodates dual ±5V power supplies and provides appropriate clock signals for the desired synchronous or asynchronous operation mode.

Codecs Part Context

This component belongs to the TP3054 and TP3057 Enhanced Serial Interface CODEC/Filter COMBO Family. It utilizes National Semiconductor's advanced double-poly CMOS process (microCMOS) for fabrication.

Codecs Replacement Considerations

The TP3054 serves as the functional equivalent within the same family but utilizes μ-law encoding instead of A-law. Other variants in the series include surface mount packages such as the TP3057WM and TP3057V.

Codecs FAQ

How does the TP3057N handle power-down control?

Power-down can be controlled by pulling the MCLKR/PDN pin high or by holding both FSX and FSR inputs continuously low. The device powers down approximately 1 ms after the last frame sync pulse.

What are the supported master clock frequencies?

The device requires two master clocks (transmit and receive) which may be asynchronous. Supported frequencies are 1.536 MHz, 1.544 MHz, or 2.048 MHz.

Can the TP3057N operate in asynchronous mode?

Yes, separate transmit and receive clocks may be applied for asynchronous operation, though best performance is realized when they are synchronous.