TDA1308/N2,112

Overview

The TDA1308/N2,112 is a Class-AB stereo headphone driver integrated circuit manufactured by NXP Semiconductors. Designed for portable digital audio applications, it utilizes a 1 μm CMOS process and features MOS output structures. The device supports single-supply operation from 3 V to 7 V or dual-supply configurations of ±1.5 V to ±3.5 V. It delivers an output power of 80 mW per channel into a 32 Ω load with total harmonic distortion plus noise below 0.1%. Key electrical specifications include a signal-to-noise ratio of up to 110 dB at a 5 kΩ load and a supply current of 15 mA under no-load conditions. The component operates within a temperature range of -40°C to 85°C.

Feature Summary

• Eliminates switch-on/off clicks during operation
• Provides excellent power supply ripple rejection capabilities
• Integrates short-circuit protection for output stages
• Delivers high performance with low distortion and high slew rate

Applications

• Portable digital audio players such as Discman devices
• Optical disc drives requiring integrated headphone amplification
• Low-power consumer electronics with space constraints

Procurement Notes

Verify the specific suffix and revision level when sourcing this component, as manufacturing status may vary across different production batches. Confirm that the received units match the original datasheet specifications regarding package type and electrical characteristics. Ensure compliance with relevant environmental standards if required for the final assembly. Cross-reference part numbers carefully to avoid confusion with similar variants in the TDA130 series family.

Selection Notes

Select this component for designs prioritizing low voltage operation and minimal external component count. It is suitable for applications requiring high signal-to-noise ratios without complex biasing networks. Consider the SOIC-8 package dimensions for PCB layout planning. Evaluate thermal dissipation requirements based on the expected load impedance and supply voltage levels to ensure reliable long-term operation within the specified temperature range.

Part Context

This device belongs to the TDA130 series of audio amplifiers developed specifically for portable media applications. It represents an evolution in low-voltage audio driving technology, offering improved efficiency and sound quality compared to earlier discrete solutions. The integration of protection features and click-free switching makes it a robust choice for battery-operated consumer electronics where user experience and power management are critical design factors.

Replacement Considerations

TDA1308AUK,027: Offers identical functionality but utilizes an 8-WLCSP package instead of SOIC-8.