TDA8566Q/N2S,112

Overview

The TDA8566Q/N2S,112 is a Class-B stereo power amplifier designed for car radio applications. It features two amplifiers in a Bridge-Tied Load (BTL) configuration with differential inputs and diagnostic outputs. The device delivers 40 W per channel into a 2 Ω load or 25 W into a 4 Ω load at THD=10%. Operating voltage ranges from 6 V to 18 V. It includes mode select switch functionality for standby, mute, and operating states.

Feature Summary

• Integrated BTL output amplifiers with differential input stages
• Diagnostic facility providing short-circuit and temperature pre-warning
• Mode select switch enabling operating, mute, and standby conditions
• Protection against load dump, reverse polarity, and electrostatic discharge

Applications

• Car radio power amplification
• Automotive audio systems requiring high common mode rejection
• Applications needing integrated thermal and short-circuit diagnostics

Procurement Notes

Verify the specific ordering suffix and package variant against current NXP documentation, as product status may have changed. Confirm RoHS compliance and material declarations via official datasheets before integration. Check for availability of replacement components due to potential discontinuation status.

Selection Notes

Select this component for automotive audio designs requiring high output power in a single package. Ensure PCB layout separates diagnostic pins from sensitive inputs to minimize crosstalk. Verify supply voltage ripple rejection requirements and thermal management capabilities for the intended enclosure environment.

Part Context

This part belongs to the TDA8566 family of integrated class-B output amplifiers. Variants include the TDA8566TH and TDA8566TH1 packages. The Q package utilizes a DBS17P plastic DIL-bent-SIL power package with 17 leads. The family is optimized for car radio applications with fixed gain and low offset voltage characteristics.

Replacement Considerations

TDA8566Q/N2,112

FAQ

How does the clip detection feature function?

When clipping occurs at one or more output stages, the dynamic distortion detector activates, causing the CLIP pin to go LOW. This signal can drive a sound processor to attenuate the input signal.

What is the behavior of the DIAG pin during a short circuit?

During a short-circuit condition to ground or supply, the DIAG pin remains continuously LOW. For a short across the load, it pulses LOW for 20 ms and HIGH for 50 μs.