TP3067V/NOPB

Overview

The TP3067V/NOPB is a monolithic PCM CODEC and Filter COMBO utilizing A-law coding conventions. It integrates transmit high-pass/low-pass filtering, receive low-pass filtering with sinc correction, active RC noise filters, and an internal precision voltage reference. The device operates on a single ±5V supply with typical active power consumption of 70 mW and standby power of 3 mW. It features TTL or CMOS compatible digital interfaces and includes receive push-pull power amplifiers for balanced output drive capability.

Feature Summary

• Integrated A-law encoding and decoding with switched-capacitor filtering
• Built-in receive power amplifiers for direct transformer driving
• Supports both synchronous and asynchronous serial interface operation
• Includes analog loopback switch and timing slot output

Applications

• D3/D4 telephony applications
• CCITT standard compliant communication systems
• Subscriber line interface cards

Procurement Notes

Verify the component origin as Texas Instruments acquired National Semiconductor assets. Confirm the NOPB suffix indicates lead-free and RoHS compliance. Ensure the V package variant matches the required plastic chip carrier form factor for the specific design constraints.

Selection Notes

Select this model for A-law codec requirements rather than the μ-law TP3064. Ensure the system supports the specified ±5V dual supply rails. Verify that the application can accommodate the approximately 290 ms transmit delay and 180 ms receive delay inherent to the filter architecture.

Part Context

This component belongs to the TP3064/TP3067 family of enhanced serial interface CMOS CODECs. It was originally developed by National Semiconductor using microCMOS technology before being integrated into the Texas Instruments portfolio following the acquisition of National Semiconductor's semiconductor business.

Replacement Considerations

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