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AD549 Datasheet(PDF) 7 Page - Analog Devices

Part # AD549
Description  Ultralow Input Bias Current Operational Amplifier
PDF  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD549 Datasheet(HTML) 7 Page - Analog Devices

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AD549
Rev. H | Page 7 of 20
3000
1000
300
100
–55
–25
5
35
65
95
125
TEMPERATURE (°C)
Figure 8. Open-Loop Gain vs. Temperature
30
25
20
15
10
5
0
0123
456
7
WARM-UP TIME (Minutes)
Figure 9. Change in Offset Voltage vs. Warm-Up Time
50
45
40
35
30
25
20
–10
–5
0
5
10
COMMON-MODE VOLTAGE (V)
Figure 10. Input Bias Current vs. Common-Mode Voltage
50
45
40
35
30
25
20
0
5
10
15
20
POWER SUPPLY VOLTAGE (±V)
Figure 11. Input Bias Current vs. Power Supply Voltage
160
140
120
100
80
60
40
20
10
100
1k
10k
FREQUENCY (Hz)
Figure 12. Input Voltage Noise Spectral Density
100k
10k
1k
100
10
1
0.1
100k
1M
10M
100M
1G
10G
100G
SOURCE RESISTANCE (Ω)
WHENEVER JOHNSON NOISE IS GREATER THAN
AMPLIFIER NOISE, AMPLIFIER NOISE CAN BE
CONSIDERED NEGLIGIBLE FOR THE APPLICATION
RESISTOR
JOHNSON NOISE
10Hz BANDWIDTH
AMPLIFIER GENERATED NOISE
1kHz BANDWIDTH
Figure 13. Noise vs. Source Resistance



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