AD548 Analog Devices, AD548 Datasheet - Page 4

• Manufacturer Part Number: AD548
• Description: Precision/ Low Power BiFET Op Amp
• Manufacturer: Analog Devices

AD548–Typical Characteristics
100
–20
–40
Figure 10. Open Loop Frequency
Response
80
Figure 13. CMRR vs. Frequency
0.001
60
40
20
0.01
Figure 7. Input Bias Current vs.
Common-Mode Voltage
0
0.1
10
90
80
60
40
30
20
70
50
4
1k
4
6
1
8
2
0
–10
100
Figure 16. Total Harmonic
Distortion vs. Frequency
1k
WITH GAIN = 10
FOLLOWER
COMMON-MODE VOLTAGE – V
–6
10k
PHASE
GAIN
FREQUENCY – Hz
FREQUENCY – Hz
10k
FREQUENCY – Hz
1k
–2
UNITY GAIN
100k
FOLLOWER
2
100k
10k
1M
6
10M
100k
1M
10
100
80
60
40
20
–20
–40
0
Figure 8. Change in Offset Voltage
vs. Warm-Up Time
Figure 11. Open Loop Voltage Gain
vs. Supply Voltage
Figure 14. Large Signal Frequency
Response
Figure 17. Input Noise Voltage
Spectral Density
160
120
100
22
18
16
14
10
140
20
12
100
120
110
30
80
40
20
25
20
15
10
90
8
6
4
0
60
80
70
60
2
5
0
0
10
10
0
0
2
10
100
WARM-UP TIME – Seconds
100
4
SUPPLY VOLTAGE – V
FREQUENCY – Hz
20
FREQUENCY – Hz
6
1k
–4–
30
1k
8
10
40
10k
12
10k
50
100k
14
60
16
100k
1M
18
70
Figure 15. Output Swing and Error
Voltage vs. Output Settling Time
Figure 18. Total Noise vs. Source
Impedance
1250
1000
10,000
1500
Figure 12. PSRR vs. Frequency
750
500
100
250
120
–20
1,000
Figure 9. Open Loop Gain vs.
Temperature
20
–10
80
60
40
10
100
–5
0
0
10
–55
5
0
100
1
0
100k
0
WHENEVER JOHNSON NOISE IS GREATER THAN
AMPLIFIER NOISE, AMPLIFIER NOISE CAN BE
CONSIDERED NEGLIGIBLE FOR APPLICATION
–25
RESISTOR JOHNSON
1M
1k
AMPLIFIER GENERATED NOISE
SOURCE IMPEDANCE –
TEMPERATURE – C
–SUPPLY
+SUPPLY
2
SETTLING TIME – µs
FREQUENCY – Hz
NOISE
10M
5
10mV
10k
1kHz BANDWIDTH
100M
35
4
10mV
R
1mV
L
1mV
= 10k
65
1G
100k
BANDWIDTH
6
10G
10Hz
95
REV. C
100G
125
1M
8