TP3056BN

Codecs Overview

The TP3056BN is a monolithic serial interface combined PCM codec and filter device manufactured by Texas Instruments. It integrates a single-chip PCM encoder/decoder with analog filters to interface full-duplex voice telephone circuits with TDM systems. The device operates on ±5-V supplies (VCC = 5 V, VBB = -5 V) within an operating temperature range of 0°C to 70°C. It features a TTL- or CMOS-compatible digital interface requiring a 2.048 MHz master clock and supports both A-law and m-law coding standards via the ASEL pin.

Codecs Feature Summary

• Integrated transmit high-pass and low-pass filtering alongside receive low-pass filtering with (sin x)/x correction
• Supports both A-law and m-law encoding and decoding modes selectable via hardware configuration
• Includes internal precision voltage reference and autozero circuitry for signal integrity
• Features automatic power-down capability to minimize standby power consumption

Codecs Applications

• Line interface for digital transmission and switching of T1/E1 carrier systems
• Subscriber line concentrators in central office telephone systems
• Digital-encryption systems requiring voice-band data processing
• Digital voice-band data-storage systems

Codecs Procurement Notes

Verify the specific package variant against the datasheet; the 'N' suffix indicates a 16-pin plastic dual-in-line package (PDIP). Confirm that the application environment remains within the specified 0°C to 70°C operating temperature range. Ensure supply voltages are strictly maintained at +5 V and -5 V to prevent damage to the CMOS gates.

Codecs Selection Notes

Select this component when designing interfaces for T1/E1 carrier systems requiring integrated codec and filtering functions. Ensure the system architecture provides the required 2.048 MHz master clock and synchronous frame-sync pulses. Verify that the digital interface logic levels match the TTL or CMOS compatibility requirements of the host processor.

Codecs Part Context

The TP3056B belongs to the family of monolithic serial interface combined PCM codecs and filters from Texas Instruments. It is designed specifically for analog termination points in PCM lines or trunks. The device consolidates multiple discrete components into a single chip to maximize line interface card circuit density.

Codecs Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.