TS4984EIJT

Overview

The TS4984EIJT is a discontinued stereo audio power amplifier manufactured by STMicroelectronics. It operates as a Class AB amplifier with two channels, housed in a 15-FlipChip (UFBGA/FCBGA) package. The device supports a supply voltage range of 2.2V to 5.5V and delivers up to 1.2W per channel into an 8-ohm load. Key electrical specifications include a typical signal-to-noise ratio of 100dB(A) and a power supply rejection ratio of 62dB at 217Hz. It functions within an ambient temperature range of -40°C to +85°C.

Feature Summary

• Integrated active low standby mode that reduces supply current to less than 10nA per channel for significant power savings during idle periods.
• Near-zero pop and click performance achieved through internal circuitry designed to minimize audible transients during power-up and power-down sequences.
• Built-in thermal shutdown protection mechanism safeguards the device from damage during overtemperature conditions or excessive power dissipation.

Applications

• Stereo audio applications requiring compact form factors and efficient power dissipation
• Portable electronic devices utilizing battery power where low standby current is critical
• Audio systems needing high signal-to-noise ratio performance in small packages

Procurement Notes

Verify component authenticity and physical condition upon receipt, as this part is officially obsolete and no longer in production. Confirm that the received units match the original specifications, including the 15-FlipChip package and STMicroelectronics branding. Check for any signs of handling damage or moisture exposure, especially given the age of the inventory. Ensure compatibility with existing design constraints before final integration.

Selection Notes

Select this component only if the specific 15-FlipChip package and legacy status are acceptable for the design. Consider the available replacement, TS4984IQT, which offers similar functionality but in a different QFN16 package. Evaluate whether the pinout differences between the FlipChip and QFN packages require PCB redesign. Assess if the discontinued status impacts long-term supply chain stability for the project lifecycle.

Part Context

The TS4984EIJT belongs to the TS4984 family of stereo audio amplifiers from STMicroelectronics. This series is engineered for high-performance audio applications, balancing output power with efficiency. The EIJT suffix specifically denotes the 15-FlipChip packaging variant, distinguishing it from other package options like the QFN16 found in the TS4984IQT. The family emphasizes low power consumption and minimal distortion for consumer electronics.

Replacement Considerations

The TS4984IQT is a confirmed substitute part number. Note that the TS4984IQT utilizes a QFN16 package, which differs physically from the TS4984EIJT's 15-FlipChip package. Verify pin compatibility and thermal characteristics before substitution.

FAQ

What is the standby current consumption of the TS4984EIJT?

The device features an externally controlled standby mode that reduces the supply current to less than 10nA per channel.

Does the TS4984EIJT include thermal protection?

Yes, the amplifier includes internal thermal shutdown protection to prevent damage during overtemperature events.