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Product Detailed Parameters
- Description：IC AMP CLASS D STEREO 3W 16SOP
- Series：-
- Mfr：Richtek USA Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Class D
- Output Type：2-Channel (Stereo)
- Max Output Power x Channels @ Load：3W x 2 @ 3Ohm
- Voltage - Supply：4.5V ~ 5.5V
- Features：Depop, Short-Circuit and Thermal Protection, Shutdown, Volume Control
- Mounting Type：Surface Mount
- Supplier Device Package：16-SOP
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The RT9104GS is a stereo, high-efficiency Class-D audio amplifier from Richtek USA Inc., designed for applications requiring filter-less modulation. It delivers 3W per channel into 3Ω speakers with THD+N at 10%. The device operates within a 4.5V to 5.5V input supply range and features an internal switching frequency of 300kHz. Efficiency exceeds 85%, and it includes DC volume control ranging from -70dB to 20dB. The GS suffix indicates the SOP-16 package type, which is halogen-free and RoHS compliant.
Feature Summary
- Stereo Class-D architecture with filter-less modulation capability
- External DC voltage-based volume control system
- Integrated thermal protection and overcurrent protection circuits
- Fade-in functionality upon enable and power-on
Applications
- LCD Monitors
- Consumer Devices
- Powered Speakers
Procurement Notes
Verify that the 'GS' suffix strictly corresponds to the SOP-16 plastic package variant as defined in the datasheet ordering information. Confirm compliance requirements such as RoHS and halogen-free status match project specifications. Ensure PCB layout guidelines regarding decoupling capacitor placement and ground plane connections are followed to maintain thermal performance and signal integrity.
Selection Notes
Select this component for low-voltage stereo audio amplification where external output filters must be minimized. The SOP-16 package offers a balance between thermal dissipation and board space compared to other available options. Consider the specific gain steps provided by the DC volume control pin when designing the user interface or control logic for the application.
Part Context
The RT9104 series comprises stereo Class-D audio amplifiers available in multiple package configurations including WQFN-16L, SOP-16, and DIP-16. The RT9104GS specifically denotes the SOP-16 version. This family targets portable and battery-powered devices due to its efficient operation and low shutdown current characteristics.
Replacement Considerations
Datasheet documentation confirms direct hardware compatibility with the PEX89104 via PIN TO PIN replacement for certain cross-manufacturer contexts, though this typically applies to different product categories. Verify electrical parameters against existing designs before substitution.
