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| ADI ADAU1592 D类音频功放应用方案 | |||||
作者：ADI 文章来源：ADI 点击数： 更新时间：2007-10-26  |
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Class-D Audio Power Amplifier ADAU1592 概述: The ADAU1592 is a 2-channel, bridge-tied load (BTL) switching audio power amplifier with an integrated Σ-Δ modulator. The modulator accepts an analog input signal and generates a switching output to drive speakers directly. A digital, microcontroller-compatible interface provides control of reset, mute, and PGA gain as well as output signals for thermal and overcurrent error conditions. The output stage can operate from supply voltages ranging from 9 V to 18 V. The analog modulator and digital logic operate from a 3.3 V supply. 主要性能: Integrated stereo modulator and power stage 0.005% THD + N 101 dB dynamic range PSRR > 65 dB RDS-ON < 0.3 Ω (per transistor) Efficiency > 90% (8 Ω) EMI-optimized modulator On/off-mute pop-noise suppression Short-circuit protection Overtemperature protection 应用范围: Flat panel televisions PC audio systems Mini-components  图1. ADAU1592功能方框图. For applications with PVDD > 15 V, add components R1 and R2 (10 Ω typical), C5 and C6 (680 pF typical), and D1 through D8 (CRS01/02).  图2. ADAU1592应用电路图. 详情请见数据表: http://www.analog.com/UploadedFiles/Data_Sheets/ADAU1592.pdf |
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