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ADM7154ARDZ-2.8-R7 Datasheet(PDF) 10 Page - Analog Devices

Part # ADM7154ARDZ-2.8-R7
Description  600 mA, Ultralow Noise, High PSRR, RF Linear Regulator
PDF  23 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADM7154ARDZ-2.8-R7 Datasheet(HTML) 10 Page - Analog Devices

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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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