TDA8568Q/N3,112

Overview

The TDA8568Q/N3,112 is a Class-B quad car radio power amplifier in a DBS23P package. It provides four BTL channels with a fixed gain of 40 dB. Operating supply voltage ranges from 6 V to 18 V. Maximum output power reaches 25 W per channel at 4 Ω with 10% THD. Quiescent current is typically 230 mA, while standby current is under 100 μA. The device includes diagnostic outputs for distortion and short-circuit detection.

Feature Summary

• Integrated dynamic distortion detector and temperature pre-warning via open-collector diagnostic pin
• Short-circuit protection safe to ground, supply, and across the load with low average dissipation
• Mode select switch enables operating, mute, and standby states with minimal control current
• Reverse polarity safe operation down to -6 V without high reverse current

Applications

• Car radio applications
• Quad bridge-tied-load (BTL) audio systems

Procurement Notes

Verify component authenticity through authorized NXP distributors or certified suppliers. Confirm RoHS compliance status as indicated on official documentation. Check part marking against datasheet specifications. Ensure storage conditions meet specified limits. Validate ordering suffixes match exact package and lead configuration requirements.

Selection Notes

Select this component for automotive audio designs requiring four independent BTL channels. Verify thermal management capabilities given the junction-to-ambient resistance. Ensure input impedance matches source requirements. Confirm mode select circuitry meets microprocessor interface standards. Evaluate PCB layout constraints for separating diagnostic pins from inputs.

Part Context

This integrated circuit belongs to the TDA856 series of power amplifiers designed specifically for automotive environments. It features a 23-lead Single-In-Line plastic power package. The device replaces older generations with improved thermal characteristics and integrated diagnostic functions suitable for modern vehicle infotainment systems.

Replacement Considerations

Pin-compatible with TDA8567Q except for gain differences.