TDA8561Q/N3C,112

Overview

The TDA8561Q/N3C,112 is an integrated Class-B output amplifier in a 17-lead DBS17P single-in-line power package. It provides four identical amplifiers configurable as two 24 W bridge-tied load (BTL) channels or four 12 W single-ended (SE) channels. The device operates on a single supply voltage ranging from 6 V to 18 V with a typical nominal voltage of 14.4 V. It features fixed gain, low output offset voltage, and comprehensive diagnostic capabilities including distortion, short-circuit, and temperature detection via an open-collector output.

Feature Summary

• Configurable for stereo BTL or quad single-ended speaker driving
• Integrated dynamic distortion detector and thermal protection
• Load dump protection and reverse polarity safety
• Low standby current with mute and standby mode select switch

Applications

• Car radio power amplification
• Automotive audio systems
• Speaker driver circuits

Procurement Notes

Verify the component status as discontinued by NXP Semiconductors. Confirm that the specific ordering suffix matches the required lead length and package variant. Ensure compatibility with existing circuit designs given the end-of-life status. Check for RoHS compliance requirements against the specific revision available in the market.

Selection Notes

Select this component for applications requiring high output power with minimal external components. Consider the 17-lead through-hole package for ease of manual assembly or wave soldering. Evaluate the need for BTL versus single-ended configuration based on speaker impedance and desired power levels. Ensure the design accommodates the fixed gain and diagnostic pin requirements.

Part Context

The TDA8561Q belongs to NXP's family of integrated car radio power amplifiers. It is designed specifically for automotive environments, offering robust protection against electrical transients common in vehicle power supplies. The device simplifies audio system design by integrating multiple amplifier channels and diagnostic features into a single package.

Replacement Considerations

Public confirmed substitute part numbers: TDA8561Q/N3,112; TDA8561Q/N2,112.