ADP121 데이터 시트보기 (PDF) - Analog Devices
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ADP121 Datasheet PDF : 20 Pages
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Data Sheet
0
VRIPPLE = 50mV
–10 VIN = 5V
VOUT = 1.2V
–20 COUT = 1µF
–30
–40
–50
–60
150mA
100mA
10mA
1mA
100µA
0µA
–70
–80
–90
–100
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 17. Power Supply Rejection Ratio vs. Frequency
0
VRIPPLE = 50mV
–10 VIN = 5V
VOUT = 1.8V
–20 COUT = 1µF
–30
–40
150mA
100mA
10mA
1mA
100µA
0µA
–50
–60
–70
–80
–90
–100
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 18. Power Supply Rejection Ratio vs. Frequency
0
VRIPPLE = 50mV
–10 VIN = 5V
VOUT = 3.3V
–20 COUT = 1µF
–30
–40
150mA
100mA
10mA
1mA
100µA
0µA
–50
–60
–70
–80
–90
–100
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 19. Power Supply Rejection Ratio vs. Frequency
ADP121
0
3.3V/150mA
1.2V/150mA
1.8V/150mA
3.3V/100µA
1.2V/100µA
1.8V/100µA
–20
–40
–60
–80
–100
–120
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 20. Power Supply Rejection Ratio vs. Frequency at Various Output
Voltages and Load Currents
10
1.2V
1.8V
3.3V
1
0.1
0
10
100
1k
10k
100k
FREQUENCY (Hz)
Figure 21. Output Noise Spectrum, VIN = 5 V, ILOAD = 10 mA, COUT = 1 µF
70
60
50
40
30
20
10
0
0.001
0.01
0.1
1
10
ILOAD (mA)
3.3V
2.5V
1.8V
1.5V
1.2V
100
1000
Figure 22. Output Noise vs. Load Current and Output Voltage, VIN = 5 V, COUT = 1 μF
Rev. G | Page 9 of 20
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