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A21SP16

3 W filter-free class-D audio power amplifier
  • active 活性

The A21SP16 is a differential class-D BTL power amplifier. It is able to drive up to 2.3 W into a 4 Ω load and 1.4 W into a 8 Ω load at 5 V. It achieves outstanding efficiency (88% typ.) compared to classical Class-AB audio amps.

The gain of the device can be controlled via two external gain-setting resistors. Pop & click reduction circuitry provides low on/off switch noise while allowing the device to start within 5 ms. A standby function (active low) allows the reduction of current consumption to 10 nA typ.

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Errata Sheet
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数据表

Key Features

  • Operating from VCC = 2.4 V to 5.5 V
  • Standby mode active low
  • Output power: 3 W into 4 Ω and 1.75 W into 8 Ω with 10% THD+N max and 5 V power supply
  • Output power: 2.3 W @ 5 V or 0.75 W @ 3 V into 4 Ω with 1% THD+N max
  • Output power: 1.4 W @ 5 V or 0.45 W @ 3 V into 8 Ω with 1% THD+N max
  • Adjustable gain via external resistors
  • Low current consumption 2 mA @ 3 V
  • Efficiency: 88% typ.
  • Signal to noise ratio: 85 dB typ.
  • PSRR: 63 dB typ. @ 217 Hz with 6 dB gain
  • PWM base frequency: 250 kHz
  • Low pop & click noise
  • Thermal shutdown protection
  • Available in flip-chip 9 x 300 μm (Pb-free)

图案 资源

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Technical Documentation

Product Specifications

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DS10233: 3 W filter-free class-D audio power amplifier
1.0 857 KB

Presentations & Training Material

Presentations

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ST offering in Wearable - Analog and Mixed Signal Portfolio
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Publications and Collaterals

Brochure

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样品 & 购买

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产品型号 Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
A21SP16JActiveChip Scale Package 0.5mm pitchTape And Reel_Free Samples.4Distributor reported inventory date: 2016-02-08
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA50005000
Farnell Element14Order NowEUROPE49971
RS COMPONENTSOrder NowEUROPE49801
DIGIKEYOrder NowWORLDWIDE46991
MOUSEROrder NowWORLDWIDE14421
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(*) 建议零售价格仅用于预算,以美元为单位,每。的报价,以当地货币计算的价格,请联系您当地的 ST 销售办事处 或我们的 分销商
(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
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