logo
Login
/Register

SGM2821

Active

3W Low EMI Class-D Audio Power Amplifier with Dual Mode of Automatic Level Control

Preview Image
Preview Image

The SGM2821 is a high efficiency, high-performance, Class-D audio power amplifier with dual mode of Automatic Level Control (ALC). It operates from 2.5V to 5.5V supply voltage. When powered with 5V supply voltage, it is capable of delivering a continuous average output of 2.4W into 4Ω load with 1% THD+N.

As a Class-D audio amplifier, the SGM2821 features up to 88% efficiency and 72dB PSRR at 217Hz which make the device ideal for battery-powered high-quality audio applications.

A key benefit of the SGM2821 over typical Class-D audio power amplifiers is that it generates much less EMI emissions, thus greatly simplifying the system design for portable applications. The device also includes the over-current and short-circuit protections with auto-recovery, which ensures the device can be operated safely and reliably without the need for system interaction.

More
FEATURES
  • Filterless Class-D Operation

  • High Efficiency up to 88%

  • Automatic Level Control to Eliminate Output Clipping

  • Output Power at 5V Supply (ALC-OFF)

    3.0W (4Ω Load, 10% THD+N)

    2.4W (4Ω Load, 1% THD+N)

    1.7W (8Ω Load, 10% THD+N)

    1.4W (8Ω Load, 1% THD+N)

  • Low THD+N: 0.05% (VDD = 3.6V, f = 1kHz, RL = 8Ω, PO = 0.5W)

  • ALC Range: 13dB

  • Low Quiescent Current: 2.6mA at VDD = 3.6V

  • Low Shutdown Current: 0.1μA (TYP)

  • High PSRR: 72dB at 217Hz

  • No Bypass Capacitor Required for the Common-Mode Bias

  • Under-Voltage Lockout

  • Auto-Recovering Over-Current and Short-Circuit Protections

  • Thermal Overload Protection

  • Low EMI Design

  • Available in a Green UTQFN-1.5×1.5-9L Package

APPLICATIONS

Mobile Phones

Portable Navigation Devices

Multimedia Internet Devices

Portable Speakers

Ordering Information
Part Number
StatusPackagePinsPd-Free
RoHS
REACH
Green
MSL RatingOperating Temperature RangeMaterial ContentReliability Report
Unit Resale Price*
(Volume Range: in USD)
Lead Time**
(Volume Range: Days)
SGM2821YUSN9G/TR
Active
UTQFN-1.5×1.5-9L
9
Yes
YesYesYesMSL1
-40℃ to +85℃
View
View
1-24 units : $0.525/unit
25-99 units : $0.45/unit
100-249 units : $0.375/unit
250-499 units : $0.3/unit
500-999 units : $0.2625/unit
1000-9999 units : $0.195/unit
3K-9K : 14 days
10K-99K : 35 days
100K-999K : 70 days
1000K and above : 91 days

* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.

** The lead time provided is for reference purposes only and is subject to change based on different circumstances.

Logo
SG Micro Corp (SGMICRO) specializes in the development, manufacturing and sales of high-performance and high-reliability integrated circuits for analog signal conditioning and system power management, offering innovative solutions to a broad range of applications in the industrial, automotive, communication, computing, consumer electronics, and medical equipment markets.
Privacy Policy Copyright © 2024 SG MICRO CORP All rights reserved.