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SSM2804CBZ-R7 数据表(PDF) 11 Page - Analog Devices |
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SSM2804CBZ-R7 数据表(HTML) 11 Page - Analog Devices |
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11 / 36 page ![]() SSM2804 Rev. 0 | Page 11 of 36 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 2.5 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V) f = 1kHz RL = 8Ω + 33µH THD + N = 10% THD + N = 0.1% THD + N = 1% Figure 16. Output Power vs. Supply Voltage, Class-D Amplifier, RL = 8 Ω 400 0 02 OUTPUT POWER (W) 50 100 150 200 250 300 350 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 .0 PVDD = 2.7V PVDD = 3.6V PVDD = 4.2V PVDD = 5V RL = 8Ω + 33µH Figure 17. Supply Current vs. Output Power into 8 Ω, Class-D Amplifier 100 90 80 70 60 50 40 30 20 10 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 OUTPUT POWER (W) RL = 8Ω + 33µH PVDD = 2.7V PVDD = 3.6V PVDD = 4.2V PVDD = 5V Figure 18. Efficiency vs. Output Power into 8 Ω, Class-D Amplifier 3.5 2.0 2.5 3.0 1.5 1.0 0.5 0 2.5 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V) f = 1kHz RL = 4Ω + 15µH THD + N = 10% THD + N = 0.1% THD + N = 1% Figure 19. Output Power vs. Supply Voltage, Class-D Amplifier, RL = 4 Ω 800 0 03 OUTPUT POWER (W) 100 200 300 400 500 600 700 0.5 1.0 1.5 2.0 2.5 3.0 .5 RL = 4Ω + 15µH PVDD = 5V PVDD = 4.2V PVDD = 3.6V PVDD = 2.7V Figure 20. Supply Current vs. Output Power into 4 Ω, Class-D Amplifier 100 90 80 70 60 50 40 30 20 10 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 OUTPUT POWER (W) RL = 4Ω + 15µH PVDD = 2.7V PVDD = 3.6V PVDD = 4.2V PVDD = 5V Figure 21. Efficiency vs. Output Power into 4 Ω, Class-D Amplifier |
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