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Product Detailed Parameters
- Description：IC AMP CLSS AB MONO 1W 9FLIPCHIP
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Type：Class AB
- Output Type：1-Channel (Mono)
- Max Output Power x Channels @ Load：1W x 1 @ 8Ohm
- Voltage - Supply：2.5V ~ 5.5V
- Features：Depop, Differential Inputs, Short-Circuit and Thermal Protection, Standby
- Mounting Type：Surface Mount
- Supplier Device Package：9-FlipChip
- Package / Case：9-WFBGA, FCBGA
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The TS4994IJT is a Class-AB audio power amplifier delivering 1.2W continuous RMS output into an 8Ω load at 5V. It features differential inputs for noise immunity and selectable standby mode (active high or low) reducing supply current to less than 10nA. The device operates from 2.5V to 5.5V with ultra-fast startup of 15ms typical. It includes internal thermal shutdown, near-zero pop and click, and common mode feedback biasing outputs at VCC/2. Available in Flip-Chip 9 bumps, DFN10, and MiniSO-8 packages.
Feature Summary
- Differential inputs provide outstanding noise immunity
- Selectable standby mode reduces supply current to less than 10nA
- Internal thermal shutdown protection sustains short circuits
- Common mode feedback biases outputs at VCC/2
Applications
- Mobile Phones
- Laptop / Notebook Computers
- PDAs
- Portable Audio Devices
Procurement Notes
Verify the specific package type required, as the TS4994 series is available in multiple configurations including Flip-Chip 9 bumps, DFN10, and MiniSO-8. Confirm that the selected variant supports the desired standby pin logic, noting that the MiniSO-8 version may have fixed active-low standby behavior compared to other packages. Ensure the ordering suffix matches the intended temperature range and packaging format.
Selection Notes
Select this component for applications requiring high-quality audio amplification with minimal external components. The differential input architecture is suitable for environments with significant electromagnetic interference. Consider the operating voltage range of 2.5V to 5.5V when designing the power supply. The ultra-low standby consumption makes it appropriate for battery-powered portable devices where power efficiency is critical.
Part Context
The TS4994 is part of STMicroelectronics' portfolio of audio power amplifiers designed for mobile and portable electronics. It belongs to a family of single-channel mono amplifiers optimized for space-constrained designs. The device integrates protection features and requires few external components, simplifying the design process for manufacturers of cellular phones, laptops, and personal digital assistants.
Replacement Considerations
TS4990IST: Offers 1.2W output with active low standby only.
FAQ
What is the maximum output power of the TS4994IJT?
It delivers 1.2W of continuous RMS output power into an 8Ω load at 5V.
How does the standby mode function on the TS4994IJT?
The standby mode is externally controlled via the STBY MODE pin and can be configured as active high or active low, reducing supply current to less than 10nA.
