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SGM4703

量产

High-Power Stereo Class-D Audio Power Amplifier with Adjustable Power Limit and Automatic Level Control

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The SGM4703 is a high-power, high efficiency, stereo Class-D audio power amplifier with adjustable power limit (APL) and automatic level control (ALC). It operates with a wide range of supply voltages from 5V to 26V. With 24V supply voltage, it can deliver 2 × 40W peak output power for a pair of 8Ω speakers with 10% THD+N.

The high efficiency of SGM4703 extends battery life in playing music and allows it to deliver an output power of 2 × 20W without the need for a bulky heat sink on a two-layer system board. Its high PSRR and low EMI emission reduce system design and manufacturing complexities, as well as lower system cost.

The SGM4703 features APL and ALC. The APL limits peak audio outputs to a user-defined value to protect audio speakers from excessive power dissipation or over-load. The APL and ALC adjust the voltage gain of the audio amplifiers in response to over-limit audio inputs, eliminating output clipping distortion while maintaining a maximally allowed dynamic range of audio outputs. The limiting voltage of APL and ALC can be either a user-defined value or the supply voltage.

The SGM4703 can be configured into driving either a pair of speakers in Bridge-Tied-Load (BTL) configuration for stereo applications or a single speaker in Parallel BTL (PBTL) configuration for mono applications.

The SGM4703 features two PWM modulation schemes for Class-D audio amplifiers: Dual-Side-Modulation (DSM) and Single-Side-Modulation (SSM).

In SGM4703, comprehensive protection modes against various operating faults ensure its safe and reliable operation.

More
特性
  • Wide Range of Supply Voltages from 5V to 26V

  • Adjustable Power Limit to Safeguard Audio Speakers

  • Automatic Level Control to Eliminate Output Clipping

  • 4 Selectable Gain Settings: 20/26/30/34dB

  • 3 Selectable ALC Dynamic Characteristics

  • 2 Selectable PWM Frequencies with Optional Spread-Spectrum: 360kHz and 500kHz

  • 2 Selectable Modulation Schemes: SSM and DSM

  • Optional PBTL Configuration for Mono Applications

  • Peak Output Power in Non-ALC

    2 × 40W (VDD = 24V, 8Ω + 33μH, BTL, THD+N = 10%)

    2 × 32W (VDD = 24V, 8Ω + 33μH, BTL, THD+N = 1%)

    80W (VDD = 24V, 4Ω + 33μH, PBTL, THD+N = 10%)

    64W (VDD = 24V, 4Ω + 33μH, PBTL, THD+N = 1%)

  • ALC Output Power (THD+N < 0.5%) in ALC

    2 × 30W (VDD = 24V, 8Ω + 33μH, BTL)

    2 × 21W (VDD = 15V, 4Ω + 33μH, BTL)

    60W (VDD = 24V, 4Ω + 33μH, PBTL)

  • Wide ALC Dynamic Range: 12dB (VDD = 12V)

  • Low THD+N: 0.02% (VDD = 12V, 4Ω + 33μH, PO = 10W/Ch)

  • High PSRR: 80dB at 1kHz with SSM

  • Protection Modes against Various Operating Faults Including Under-Voltage, Over-Voltage, Over-Current, Over-Temperature, and DC-Detect

  • Available in a Green TSSOP-28 (Exposed Pad) Package

应用

Bluetooth/Wireless Speakers

Consumer Audio Speakers

Soundbars

订购信息
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)
SGM4703YPTS28G/TR
量产
TSSOP-28 (Exposed Pad)
28
Yes
YesYesYesMSL3
-40℃ to +85℃
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1-24 units : $2.8/unit
25-99 units : $2.4/unit
100-249 units : $2/unit
250-499 units : $1.6/unit
500-999 units : $1.4/unit
1000-9999 units : $1.04/unit
3K-9K : 14 days
10K-99K : 35 days
100K-999K : 70 days
1000K and above : 98 days

* 价格仅供参考。请联系我们的经销商获取正式报价。

** 交货时间仅供参考,可能会根据不同情况而发生变化。

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