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Product Detailed Parameters
- Description：IC AMP CLASS D STEREO 2.8W 20QFN
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Class D
- Output Type：2-Channel (Stereo)
- Max Output Power x Channels @ Load：2.8W x 2 @ 4Ohm
- Voltage - Supply：2.5V ~ 5.5V
- Features：Depop, Differential Inputs, Standby, Thermal Protection
- Mounting Type：Surface Mount
- Supplier Device Package：20-QFN (4x4)
- Package / Case：20-VFQFN Exposed Pad
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The TS2012 is a fully differential, Class D stereo audio power amplifier designed for filter-free applications. It operates within a supply voltage range of 2.5 V to 5.5 V and delivers up to 2.8 W into a 4 Ω load at 5 V with 10% THD+N. The device features four selectable gain settings (6, 12, 18, or 24 dB) configured via G0 and G1 pins. It includes independent active-low standby control for each channel, pop-and-click reduction circuitry, and thermal shutdown protection. The component is housed in a lead-free QFN20 4x4 mm package.
Feature Summary
- Filter-free architecture utilizing fully differential output topology
- Independent dual-channel standby control with fast startup phase
- Configurable gain selection via discrete logic pins
- Integrated thermal shutdown protection
Applications
- Cellular phones
- Personal Digital Assistants (PDA)
- Flat panel TVs
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to confirm exact packaging and tape/reel specifications. Ensure the procurement source provides valid traceability for this production data part number. Confirm that the received components match the QFN20 4x4 mm lead-free package requirements specified in the datasheet.
Selection Notes
Select this component for portable audio designs requiring high efficiency without external LC filters. It is suitable for systems operating between 2.5 V and 5.5 V where low current consumption and minimal external component count are priorities. Verify that the application supports fully differential inputs or utilizes appropriate single-ended to differential conversion.
Part Context
This component belongs to STMicroelectronics' portfolio of Class D audio power amplifiers. It is engineered to provide high efficiency compared to traditional Class AB amplifiers while maintaining compact form factors. The design targets consumer electronics where space constraints and battery life are critical considerations.
Replacement Considerations
Consult the official datasheet revision history and cross-reference lists for confirmed substitute part numbers. Do not assume pin compatibility with other Class D amplifiers without verifying electrical characteristics and pinout configurations.
FAQ
How is the amplifier gain configured?
The gain is set using two discrete pins, G0 and G1. Logic levels on these pins select one of four gains: 6, 12, 18, or 24 dB.
What is the purpose of the common-mode feedback loop?
The common-mode feedback loop controls the output bias value to average it at VCC/2, maximizing output voltage swing and allowing operation with any DC common-mode input voltage.
Does the device require input coupling capacitors?
Input coupling capacitors are optional. The common-mode feedback loop allows the device to operate without them, though they can be added to define a low-frequency cutoff.
