Datasheet
AD548
–6–
REV. D
FREQUENCY – Hz
100
80
60
0
–40
1k 10k 100k 1M 10M
–20
20
40
PHASE IN DEGREES
100
80
60
0
–40
–20
20
40
PHASE
GAIN
OPEN LOOP GAIN – dB
TPC 10. Open-Loop Frequency
Response
FREQUENCY – Hz
90
80
70
50
20
1k 10k 100k 1M
40
60
CMRR – dB
30
TPC 13. CMRR vs. Frequency
FREQUENCY – Hz
4
1
0.001
100 1k 10k
0.01
0.1
TOTAL HARMONIC DISTORTION – %
100k
FOLLOWER
WITH GAIN = 10
UNITY GAIN
FOLLOWER
TPC 16. Total Harmonic
Distortion vs. Frequency
FREQUENCY – Hz
120
100
80
20
–20
100 1k 10k 100k 1M
0
40
60
–SUPPLY
+SUPPLY
POWER SUPPLY REJECTION – dB
TPC 12. PSRR vs. Frequency
10mV
SETTLING TIME – µs
10
0
–5
–10
OUTPUT VOLTAGE SWING – V
0 2 4 6 8
5
1mV
1mV
10mV
TPC 15. Output Swing and Error
Voltage vs. Output Settling Time
SOURCE IMPEDANCE –
1,000
100
10
0
100k 1M 10M 100M 1G 10G 100G
10,000
1
AMPLIFIER GENERATED NOISE
RESISTOR JOHNSON
NOISE
1kHz BANDWIDTH
10Hz
BANDWIDTH
WHENEVER JOHNSON NOISE IS GREATER THAN
AMPLIFIER NOISE, AMPLIFIER NOISE CAN BE
CONSIDERED NEGLIGIBLE FOR APPLICATION
INPUT NOISE VOLTAGE – µV p-p
TPC 18. Total Noise vs. Source
Impedance
SUPPLY VOLTAGE – V
120
100
90
80
60
OPEN LOOP VOLTAGE GAIN – dB
0 2 4 6 8 10 12 14 16 18
110
70
TPC 11. Open-Loop Voltage Gain
vs. Supply Voltage
OUTPUT VOLTAGE – V p-p
FREQUENCY – Hz
22
20
18
12
8
10 100 1k 10k 100k 1M
10
14
16
0
6
4
2
TPC 14. Large Signal Frequency
Response
FREQUENCY – Hz
160
140
120
60
20
10 100 1k 10k 100k
40
80
100
0
INPUT NOISE VOLTAGE – nV/√Hz
TPC 17. Input Noise Voltage
Spectral Density