DA7202数据手册开发板套件编程器的评估板-音频放大器规格书PDF

描述 Description

The DA7202 is a powerful, highly efficient, low EMI Class D speaker driver that can drive 10W 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.

 

DA7202 uses a fully-differential switched-mode amplifier architecture with a fixed +18dB gain and differential analog inputs. It also has a PWM modulator and an H‑bridged switched power output stage that delivers 3.8Wrms into an 8Ω load (10.2W into a 4Ω load), making a speaker sound louder in portable devices.

BenefitsLow component countSmall PCB area due to 9 bump WLCSP 0.5mm pitch packageGood PSRR and THD+NDifferential audio inputsLow EMIShort circuit and thermal overload protection with auto-recovery

特性 Features

• 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

应用 Application

• 使用电容式触控传感器的输液液位监测仪