TP3057V-X

Codecs Overview

The TP3057V-X is an A-law monolithic PCM CODEC and filter from the Enhanced Serial Interface COMBO family, fabricated using advanced double-poly CMOS technology. It integrates a transmit section with active RC pre-filtering, a switched-capacitor band-pass filter rejecting signals below 200 Hz and above 3400 Hz, and an auto-zero companding coder. The receive section includes an expanding decoder, a low-pass filter for sin x/x correction, and a power amplifier capable of driving 600-ohm loads to 7.2 dBm. The device operates on dual ±5V supplies, supports master clocks of 1.536 MHz, 1.544 MHz, or 2.048 MHz, and features TTL/CMOS compatible serial interfaces.

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 internal precision voltage reference.
• A-law encoding and decoding architecture with automatic power-down capability and low operating power consumption.
• Designed for D3/D4 and CCITT applications with flexible synchronous or asynchronous serial interface operation.

Codecs Applications

• D3 and D4 telephony systems
• CCITT standard communication applications
• Line interface card circuit designs

Codecs Procurement Notes

Verify the specific suffix 'V' indicates the Plastic Chip Carrier package (NS Package Number V20A) as documented in the datasheet connection diagrams. Confirm that the '-X' designation corresponds to the Extended Temperature range specifications (-25°C to +125°C) provided in the absolute maximum ratings. Ensure compatibility with the required ±5V power supply rails and check for any obsolescence status updates from Texas Instruments or National Semiconductor distributors.

Codecs Selection Notes

Select the TP3057V-X specifically when A-law encoding is required, as opposed to the μ-law TP3054 variant. This component is suitable for designs requiring a single-chip solution for both audio conversion and filtering functions. Consider the Plastic Chip Carrier package dimensions if surface mount density is a priority. Verify that the application can provide the necessary dual ±5V power supplies and master clock frequencies of 1.536 MHz, 1.544 MHz, or 2.048 MHz.

Codecs Part Context

The TP3057V-X belongs to the TP3054/TP3057 Enhanced Serial Interface CODEC/Filter COMBO Family originally developed by National Semiconductor and now managed by Texas Instruments. This family utilizes microCMOS process technology to integrate analog and digital functions into a single IC. The V suffix denotes the Plastic Chip Carrier package option within this product line, distinct from the Dual-In-Line or Small Outline packages available for other variants.

Codecs Replacement Considerations

The TP3054V-X serves as the functional equivalent for applications requiring μ-law encoding instead of A-law. Other members of the COMBO family, such as the TP3054WM or TP3057WM, offer identical electrical performance but utilize different packaging formats like the Molded Small Outline Package.