ADP320 Analog Devices, ADP320 Datasheet - Page 11

• Manufacturer Part Number: ADP320
• Description: Triple, 200 mA, Low Noise, High PSRR Voltage Regulator
• Manufacturer: Analog Devices

Figure 27. Ground Current vs. Input Voltage in Dropout), V
–100
–100
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
160
140
120
100
Figure 28. Power Supply Rejection Ratio vs. Frequency, 1.8 V
Figure 29. Power Supply Rejection Ratio vs. Frequency, 3.3 V
80
60
40
20
0
0
0
1.70
10
10
200mA
100mA
10mA
1mA
200mA
100mA
10mA
1mA
LOAD = 1mA
LOAD = 5mA
LOAD = 10mA
LOAD = 50mA
LOAD = 100mA
LOAD = 200mA
100
100
1.80
1k
1k
FREQUENCY (Hz)
FREQUENCY (Hz)
1.90
V
IN
10k
10k
(V)
100k
100k
2.00
V
V
V
C
V
V
V
C
RIPPLE
IN
OUT
RIPPLE
IN
OUT
OUT
OUT
= 4.3V
= 2.8V
1M
1M
= 1.8V
= 3.3V
= 1µF
= 1µF
= 50mV
= 50mV
2.10
OUT2
= 1.8 V
10M
10M
Rev. A | Page 11 of 20
–100
–100
Figure 32. Output Noise Spectral Density, V
0.01
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
0.1
10
Figure 30. Power Supply Rejection Ratio vs. Frequency, 1.5 V
1
0
0
10
10
10
Figure 31. Power Supply Rejection Ratio vs. Frequency,
V
V
V
C
RIPPLE
IN
OUT
OUT
1.8V/200mA
1.8V/100mA
1.8V/10mA
1.2V/200mA
1.2V/100mA
1.2V/10mA
= 2.5V
= 1.5V
= 1µF
100
100
= 50mV
Channel to Channel Crosstalk
100
1k
1k
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
10k
10k
1k
100k
100k
IN
= 5 V, I
V
1V HEADROOM
1.8V PSRR
1.2 XTALK
10k
RIPPLE
1M
LOAD
1M
= 50mV
200mA
100mA
10mA
1mA
ADP320
= 10 mA
3.3V
1.8V
1.5V
100k
10M
10M