TP3094V

Overview

The TP3094V is a monolithic quad PCM codec and filter device utilizing a digital signal processing architecture. It integrates four voice channels, each featuring dedicated anti-aliasing filters, sigma-delta converters, and A-law or μ-law companding encoders and decoders. The device operates on a single +5V power supply with a voltage range of 4.75V to 5.25V. It supports serial PCM interfaces in both 8-bit and 32-bit modes, accommodating master clock frequencies of 1.536/1.544MHz, 2.048MHz, 4.096MHz, and 8.192MHz. The component is housed in a 44-lead PLCC surface-mount package and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates complete codec and filter systems for four voice channels, including transmit bandpass and receive low pass channel filters alongside companding logic.
• Features flexible PCM digital interface compatibility with standard time division multiplexed buses, supporting independent time slots or cascaded consecutive time slot configurations.
• Includes programmable test modes such as digital loopback, analog loopback, and DC conversion for system verification.
• Provides individual power down control per channel to minimize power consumption during idle states.

Applications

• Central Office subscriber line and trunk cards
• Loop Carrier equipment
• PBX equipment

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm pinout and electrical characteristics match the design requirements. Confirm end-of-life status and availability through authorized distributors, as discontinuation notifications may impact long-term supply chain stability.

Selection Notes

Select this component for designs requiring integrated analog filtering and digital compression for multiple voice channels. Ensure the system clock infrastructure supports the required MCLK frequencies and frame sync formats compatible with the selected 8-bit or 32-bit mode operation.

Part Context

The TP3094 belongs to the COMBO family of quad PCM codecs developed by National Semiconductor, now part of Texas Instruments. This series was designed to maximize line card circuit density in telecommunications infrastructure by combining analog front-end processing with digital signal processing capabilities in a single package.

Replacement Considerations

Consult official manufacturer documentation for confirmed substitute part numbers. Verify functional equivalence regarding pinout, voltage levels, and timing specifications before implementation.