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ADP7182ACPZ-R7 数据表(PDF) 16 Page - Anachip Corp |
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ADP7182ACPZ-R7 数据表(HTML) 16 Page - Anachip Corp |
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16 / 28 page ![]() ADP7182 Data Sheet Rev. A | Page 16 of 28 0 –90 –80 –70 –60 –50 –40 –30 –20 –10 0 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 HEADROOM VOLTAGE (V) FREQUENCY = 100Hz FREQUENCY = 1kHz FREQUENCY = 10kHz FREQUENCY = 100kHz FREQUENCY = 1MHz FREQUENCY = 10MHz Figure 55. Power Supply Rejection Ratio (PSRR) vs. Headroom Voltage, VOUT = −3 V, Load Current (ILOAD) = −200 mA 0 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) ILOAD = –200mA ILOAD = –100mA ILOAD = –10mA ILOAD = –1mA Figure 56. Power Supply Rejection Ratio (PSRR) vs. Frequency, Adjustable Output Voltage, VOUT = −15 V vs. Different Load Currents (ILOAD), VIN = −15.5 V with Noise Reduction Network 0 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) ILOAD = –200mA ILOAD = –100mA ILOAD = –10mA ILOAD = –1mA Figure 57. Power Supply Rejection Ratio (PSRR) vs. Frequency, Adjustable Output Voltage, VOUT = −15 V vs. Different Load Currents (ILOAD), VIN = −16.5 V with Noise Reduction Network 0 –80 –70 –60 –50 –40 –30 –20 –10 0 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.25 HEADROOM VOLTAGE (V) FREQUENCY = 100Hz FREQUENCY = 1kHz FREQUENCY = 10kHz FREQUENCY = 100kHz FREQUENCY = 1MHz FREQUENCY = 10MHz Figure 58. Power Supply Rejection Ratio (PSRR) vs. Headroom Voltage, Adjustable Output Voltage, VOUT = −15 V with Noise Reduction Network, Load Current (ILOAD) = −200 mA 1000 1 10 100 0.001 0.01 0.1 1 10 100 1000 LOAD CURRENT (mA) VOUT = –5V VOUT = –1.8V VOUT = –15V ADJ NR VOUT = –3V VOUT = –1.2V VOUT = –15V ADJ Figure 59. RMS Noise vs. Load Current (ILOAD), Various Output Voltages 100k 1 10 100 1k 10k 1 100M 10M 1M 100k 10k 1k 100 10 FREQUENCY (Hz) VOUT = –5V VOUT = –1.8V VOUT = –15V ADJ NR VOUT = –3V VOUT = –1.2V VOUT = –15V ADJ Figure 60. Noise Spectral Density, Various Output Voltages |
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