TP3057WMX/NOPB

Codecs Overview

The TP3057WMX/NOPB is an A-law monolithic PCM CODEC/filter utilizing a switched-capacitor architecture. It operates on dual supplies of VCC = +5V and VBB = -5V with typical active power consumption of 50 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. Transmit delay is approximately 290 µs, while receive delay is approximately 180 µs. It features TTL/CMOS compatible digital interfaces and includes internal auto-zero circuitry and precision voltage references.

Codecs Feature Summary

• Integrated CODEC system combining transmit high-pass and low-pass filtering with receive low-pass filtering and sin x/x correction.
• A-law companding coder and decoder for PCM signal processing.
• Supports both synchronous and asynchronous operation modes for flexible clocking configurations.
• Includes automatic power-down functionality to minimize standby power consumption.

Codecs Applications

• D3/D4 telephony applications
• CCITT standard communication systems

Codecs Procurement Notes

Verify the component origin as Texas Instruments, noting the historical transition from National Semiconductor. Confirm the suffix 'X' indicates tape and reel packaging and 'NOPB' denotes lead-free status. Ensure the specific package type matches the design requirements for surface mount integration.

Codecs Selection Notes

Select this model specifically for A-law encoding requirements; the TP3054 variant provides mu-law support. Verify that the application requires the 16-pin SOIC package configuration. Ensure the system design accommodates the necessary dual +/- 5V power supply rails for proper analog interface operation.

Codecs Part Context

This component belongs to the Enhanced Serial Interface CODEC/Filter COMBO family, which also includes the TP3054. The devices are fabricated using advanced double-poly CMOS processes. This specific part number represents the surface mount version of the A-law compliant codec within the broader series.

Codecs Replacement Considerations

The TP3054 serves as the functional equivalent for mu-law applications. Other members of the COMBO family may be considered if different coding standards are required.

Codecs FAQ

How does the device handle frame sync pulses?

The device supports both short (one bit clock period) and long (three or more bit clock periods) frame sync pulse formats for both transmit and receive directions.

What is the function of the MCLKR/PDN pin?

It serves as the receive master clock input. When held continuously high, it places the device into power-down mode; when low or clocked, it enables normal operation.

Can the transmit and receive clocks operate asynchronously?

Yes, separate transmit and receive master clocks can be used, though synchronous operation is recommended for optimal performance.