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Product Detailed Parameters
- Description：IC AMP CLSS AB MONO 1.2W 8MINISO
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Class AB
- Output Type：1-Channel (Mono)
- Max Output Power x Channels @ Load：1.2W x 1 @ 8Ohm
- Voltage - Supply：2.2V ~ 5.5V
- Features：Depop, Differential Inputs, Standby, Thermal Protection
- Mounting Type：Surface Mount
- Supplier Device Package：8-MiniSO
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The TS4990IST is a Class-AB mono audio power amplifier manufactured by STMicroelectronics, designed for mobile applications to minimize external component count. It delivers 1.2 W continuous RMS output power into an 8 Ω load at 5 V supply voltage. The device operates within a supply voltage range of 2.2 V to 5.5 V and features ultra-low standby consumption of 10 nA. Key electrical parameters include a gain-bandwidth product of 1.5 MHz, THD+N of 0.2%, and unity gain stability. It utilizes a TSSOP-8 surface-mount package and supports differential input.
Feature Summary
- Ultra-low standby mode reduces supply current to 10 nA for extended battery life in portable devices.
- Near-zero pop and click performance ensures silent operation during power-up and standby transitions.
- High power supply rejection ratio (PSRR) of 62 dB at 217 Hz minimizes interference in grounded modes.
Applications
- Mobile phones
- Portable media players
- Hands-free kits
Procurement Notes
Verify the specific suffix 'IST' corresponds to the TSSOP-8 package variant when sourcing. Confirm RoHS compliance status via the manufacturer's official datasheet or ECOPACK3 certification details. Ensure the ordering part number matches the required tape and reel or cut tape packaging format specified by the distributor. Cross-reference the active status with the latest STMicroelectronics product lifecycle documentation.
Selection Notes
Select this component for single-channel audio amplification where low distortion and high efficiency are critical. The 1.2 W output capability suits 8 Ω speaker loads in compact consumer electronics. Consider the 2.2 V minimum operating voltage for battery-powered systems requiring wide dynamic range. The differential input configuration may simplify circuit design compared to single-ended alternatives.
Part Context
The TS4990IST belongs to the TS4990 series of audio power amplifiers from STMicroelectronics. This series is engineered for demanding audio applications in mobile devices, focusing on reducing external component requirements while maintaining high sound quality. The IST suffix specifically denotes the TSSOP-8 surface-mount package option within this family.
Replacement Considerations
Publicly confirmed substitute part numbers for the TS4990IST were not identified in the provided source material. Verify compatibility with alternative STMicroelectronics audio amplifiers based on pinout and electrical specifications before substitution.
