概览
描述
The DA7202 is a powerful, highly efficient, low EMI Class D speaker driver that can drive 8W into 4Ω loads directly from a 2S Lithium-ion battery pack to power a variety of two-cell portable applications such as Ultrabooks and tablets.
It uses a fully differential switched-mode amplifier architecture with a fixed +18dB gain, with differential analog inputs. It also has a PWM modulator and an H-bridged switched power output stage that delivers 5W (dynamic) into an 8Ω load, making a speaker sound louder on portable devices.
Benefits
- Low component count
- Small PCB area due to 9 bump WLCSP 0.5mm pitch package
- Good PSRR and THD+N
- Differential audio inputs
- Low EMI
- Short circuit and thermal overload protection with auto-recovery
特性
- Supports 4Ω and 8Ω loads
- Input supply range: 4.5V to 9.0V
- Prms: 9.0W into 4Ω load at 8.2V, 1% THD+N
- Prms: 10.2W into 4Ω load at 8.2V, 10% THD+N
- Prms: 3.8W into 8Ω load at 8.2V, 1% THD+N
- Prms: 5.0W into 8Ω load at 8.2V, 10% THD+N
- Efficiency: 85% at Pout = 7.0W at 8.2V, 4Ω
- Efficiency: 90% at Pout = 3.5W at 8.2V, 8Ω
- Ultra-low standby current: 7µA
- SNR (A-weighted) 104dB
- THD+N: 90dB
- PSRR: 78dB
- Fixed +18db gain
- Package: 9-WLCSP 0.5mm
产品对比
应用
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| 类型 | 文档标题 | 日期 |
| 数据手册 | PDF 779 KB | |
| 应用说明 | PDF 502 KB | |
| 手册 - 开发工具 | PDF 1.08 MB | |
| 原理图 | PDF 30 KB | |
| 产品简述 | PDF 479 KB | |
| 其他 | ZIP 693 KB | |
| 产品简述 | PDF 1.25 MB | |
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