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ADM7154ACPZ-3.3-R7 数据表(PDF) 10 Page - Analog Devices |
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ADM7154ACPZ-3.3-R7 数据表(HTML) 10 Page - Analog Devices |
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10 / 23 page ![]() ADM7154 Data Sheet Rev. B | Page 10 of 23 HEADROOM (V) 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 –140 –120 –100 –80 –60 –40 –20 0 10Hz 100Hz 1kHz 10kHz 100kHz 1MHz 10MHz Figure 23. Power Supply Rejection Ratio (PSRR) vs. Headroom Voltage at Different Frequencies, VOUT = 3.3 V, 400 mA Load FREQUENCY (Hz) 10M 1 10 100 1k 10k 100k 1M –140 –120 –100 –80 –60 –40 –20 0 ILOAD = 100mA ILOAD = 200mA ILOAD = 400mA ILOAD = 600mA Figure 24. Power Supply Rejection Ratio (PSRR) vs. Frequency at Various Loads, VOUT = 1.8 V, VIN = 2.6 V FREQUENCY (Hz) 10M 1 10 100 1k 10k 100k 1M –140 –120 –100 –80 –60 –40 –20 0 800mV 600mV 500mV 400mV 300mV 250mV Figure 25. Power Supply Rejection Ratio (PSRR) vs. Frequency at Various Headroom Voltages, VOUT = 1.8 V, 400 mA Load HEADROOM (V) 0.75 0.65 0.55 0.45 0.35 0.25 –140 –120 –100 –80 –60 –40 –20 0 10Hz 100Hz 1kHz 10kHz 100kHz 1MHz 10MHz Figure 26. Power Supply Rejection Ratio (PSRR) vs. Headroom Voltage, Different Frequencies, VOUT = 1.8 V, 400 mA Load FREQUENCY (Hz) 10M 1 10 100 1k 10k 100k 1M –140 –120 –100 –80 –60 –40 –20 0 1µF 10µF 100µF 1000µF Figure 27. Power Supply Rejection Ratio (PSRR) vs. Frequency, Different CBYP, VOUT = 3.3 V, 400 mA Load, 500 mV Headroom LOAD CURRENT (mA) 1000 10 100 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 10Hz TO 100kHz 100Hz TO 100kHz Figure 28. RMS Output Noise vs. Load Current |
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