TS4621EIJT

Overview

The TS4621EIJT is a high-performance Class-G stereo headphone amplifier manufactured by STMicroelectronics. It operates within a supply voltage range of 2.3 V to 4.8 V and features a quiescent current of 0.6 mA per channel. The device delivers an output power of 1 mW into a 500 Ohm load with a THD+N of 0.02%. It includes two channels, supports surface-mount installation in a flip-chip package, and functions reliably between -40°C and +85°C.

Feature Summary

• Integrates a high-efficiency internal buck converter to generate the negative supply rail, eliminating the need for external output coupling capacitors.
• Provides digital volume control via an I2C interface, allowing remote adjustment of gain, mute, standby modes, and independent channel enablement.
• Incorporates zero pop-and-click technology to ensure silent transitions during power-up and shutdown sequences.

Applications

• Evaluation of differential input stereo headphone amplifiers using demonstration boards
• Portable audio devices requiring low-power Class-G amplification
• Battery-operated systems utilizing I2C-controlled audio management

Procurement Notes

Verify component authenticity through authorized distributors as the TS4621EIJT is listed as obsolete or end-of-life. Confirm specific revision levels and packaging formats such as cut tape or reel availability. Ensure compliance with RoHS directives and check for any active product termination notifications from STMicroelectronics before finalizing procurement plans.

Selection Notes

Select this component for designs requiring integrated negative supply generation without external inductors or complex biasing networks. The I2C interface offers precise digital control over audio parameters, suitable for systems needing programmable gain and mute functions. Consider the thermal performance and short-circuit protection features when designing for dense PCB layouts.

Part Context

This part belongs to the TS4621E series of audio ICs from STMicroelectronics. It is specifically categorized as a 2-channel stereo headphone amplifier. The series is designed for high-performance audio applications where space efficiency and low power consumption are critical constraints.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the component is marked as obsolete, engineers should consult official STMicroelectronics resources for potential pin-compatible alternatives or redesign recommendations.