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HM8874 Datasheet(PDF) 4 Page - Shenzhen Huazhimei Semiconductor Co., Ltd |
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HM8874 Datasheet(HTML) 4 Page - Shenzhen Huazhimei Semiconductor Co., Ltd |
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4 / 17 page  VDD = 8.5V 参数 符号 条件 最小值 典型值 最大值 单位 Class D Channel VSS=0V, Av=26dB, Ta=25ºC, CIN=0.1uF, ACF-Off模式, 除非特殊说明 输出功率 PO RL=4Ω f=1kHz, THD+N=10% 10.0 W RL=8Ω 5.3 RL=4Ω, f=1kHz, THD+N=1% 8.0 RL=8Ω 4.3 总谐波失真加噪声 THD+N PO=0.1W RL=4Ω, f=1kHz 0.15 % PO=1.0W 0.25 % PO=3.0W 0.25 % 输出噪声 VN f=20Hz~20kHz, A加权 160 µVrms 信噪比 SNR A加权, Av=26dB, THD+N = 1% 91 dB 失调电压 VOS ± 6.5 mV 效率 η RL=4Ω+22uH, THD+N = 10% 90 % RL=8Ω+33uH, THD+N = 10% 94 % 静态电流 IDD No Load Input Grounded 10.5 mA With Load *6 14 mA 关断电流 ISD No Load CTRL=VSS 0.5 µA With Load *6 0.5 µA 最大输入信号 VIN_max fIN = 1kHz, THD+N≤10%, ACF-1 ON 1.75 Vrms 系统增益 Av0 RIN=56 kΩ 26.1 dB Class AB Channel VSS=0V, Av=20dB, Ta=25ºC, CIN=0.1uF, 除非特殊说明 输出功率 PO RL=4Ω, f=1kHz, THD+N=10% 9.2 W RL=8Ω 5.2 W RL=4Ω f=1kHz, THD+N=1% 7.4 W RL=8Ω 4.2 W 总谐波失真加噪声 THD+N PO=0.1W RL=4Ω, f=1kHz 0.14 % PO=1W 0.12 % PO=3W 0.12 % 输出噪声 VN f=20Hz~20kHz, A加权 75 µVrms 信噪比 SNR A加权, Av=20dB, THD+N = 1% 97 dB 失调电压 VOS ± 3 mV 效率 η RL=4Ω, f=1kHz, THD+N=10% 80 % RL=8Ω 83.5 % RL=4Ω f=1kHz, THD+N=1% 72 % RL=8Ω, 76 % 静态电流 IDD No Load Input Grounded 31 mA With Load *6 31 mA 关断电流 ISD No Load CTRL=VSS 34 µA With Load *6 34 µA 最大输入信号 VIN_max fIN = 1kHz, THD+N≤10%, ACF OFF 0.8 Vrms 系统增益 Av0 RIN=56 kΩ 18.8 dB 注 6: 此处负载使用4ohm+22uH来模拟喇叭，下同。 HM8874 单声道音频功放 |
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