IS31AP2110-ZLS2

Overview

The IS31AP2110-ZLS2 is a high-efficiency stereo Class-D audio amplifier manufactured by Integrated Silicon Solution, Inc. (ISSI). It operates from an 8V to 26V single supply voltage and delivers up to 20W per channel into an 8Ω load at 24V with 0.2% THD+N. In parallel BTL mono mode, it provides 40W into 4Ω. The device features adjustable power limiting, dynamic temperature control, and differential inputs. It includes built-in protection against short circuits, over-temperature, under-voltage, and output DC detection.

Feature Summary

• Integrates adjustable power limit function to restrict current through the speaker and prevent damage.
• Features dynamic temperature control that reduces gain when junction temperature exceeds warning levels to prevent overheating.
• Includes output DC detection circuitry to protect speakers from long-time current stress caused by input defects or shorts.
• Provides auto-recovery options for short-circuit faults and incorporates pop noise reduction for silent operation during power transitions.

Applications

• TV audio systems
• Bluetooth speaker systems
• Docking speaker systems
• Consumer audio equipment

Procurement Notes

Verify the specific ordering suffix ZLS2 corresponds to the tube packaging format as documented in the manufacturer's ordering information. Confirm the component meets industrial temperature range requirements of -40°C to +85°C. Ensure the eTSSOP-28 package dimensions align with your PCB land pattern specifications. Check for moisture sensitivity classification prior to soldering assembly.

Selection Notes

Select this amplifier for applications requiring high efficiency without external heat sinks due to its thermal management capabilities. Consider the differential input architecture if noise immunity is critical. Evaluate the four selectable fixed gain settings to match your system's volume control requirements. Verify that the supply voltage range of 8V to 26V fits within your power budget constraints.

Part Context

This component belongs to the IS31AP2110 series of digital audio amplifiers. It is designed as a filter-free solution suitable for portable and stationary audio devices. The device integrates a Class-D output stage with advanced signal processing features. It is part of ISSI's portfolio of analog mixed-signal integrated circuits focused on audio performance.

Replacement Considerations

The datasheet does not list official substitute part numbers. Designers should verify pin compatibility and electrical parameters if considering alternative Class-D amplifiers from other manufacturers. Ensure any replacement supports the required eTSSOP-28 package and thermal characteristics.