产品概述
描述
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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所有功能
- 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)
EDA符号、封装和3D模型
STMicroelectronics - A21SP16
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符号
封装
3D模型
样片和购买
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| 产品型号 | Order from distributors | 从ST订购 | 供货状态 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||
| A21SP16J | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | EAR99 | NEC | Tape and Reel | CSP P 0.5 mm | - | - | CHINA | | ||
distributors
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