ADP120 Analog Devices, ADP120 Datasheet - Page 9

• Manufacturer Part Number: ADP120
• Description: 100 mA, Low Quiescent Current, CMOS Linear Regulator
• Manufacturer: Analog Devices

–100
–100
–100
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
0
0
0
10
10
10
Figure 17. Power Supply Rejection Ratio vs. Frequency
Figure 18. Power Supply Rejection Ratio vs. Frequency
Figure 19. Power Supply Rejection Ratio vs. Frequency
100mA
10mA
1mA
100µA
NO LOAD
100mA
10mA
1mA
100µA
NO LOAD
100mA
10mA
1mA
100µA
NO LOAD
100
100
100
1k
1k
1k
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
10k
10k
10k
100k
100k
100k
V
V
V
C
V
V
V
C
V
V
V
C
RIPPLE
IN
OUT
RIPPLE
IN
OUT
RIPPLE
IN
OUT
OUT
OUT
OUT
= 5V
= 5V
= 5V
1M
1M
1M
= 1.2V
= 1µF
= 1.8V
= 1µF
= 3.3V
= 1µF
= 50mV
= 50mV
= 50mV
10M
10M
10M
Rev. B | Page 9 of 20
Figure 21. Output Noise Spectrum, V
–100
–120
0.01
–20
–40
–60
–80
0.1
Figure 22. Output Noise vs. Load Current and Output Voltage
10
70
60
50
40
30
20
10
0.001
0
1
0
10
10
Figure 20. Power Supply Rejection Ratio vs. Frequency,
Various Output Voltages and Load Currents
3.3V/100mA
3.3V/100µA
100
0.01
V
V
OUT
100
OUT
= 3.3V
V
= 1.2V
1k
IN
V
= 5 V, C
V
V
FREQUENCY (Hz)
FREQUENCY (Hz)
OUT
OUT
OUT
0.1
V
I
1.2V/100mA
1.2V/100µA
LOAD
= 3.3V
OUT
= 2.5V
= 1.2V
10k
1k
OUT
IN
= 1.8V
V
(mA)
= 5 V, I
OUT
= 1 μF
1
= 1.5V
V
100k
OUT
LOAD
= 1.8V
10k
= 10 mA, C
1.8V/100mA
1.8V/100µA
10
1M
ADP120
OUT
100k
10M
= 1 μF
100