Datasheet

AD823
Rev. A | Page 8 of 20
LOAD RESISTANCE (Ω)
60
80
70
90
100
110
OPEN-LOOP GAIN (dB)
100
1k
10k
100k 500k
V
S
= ± 2.5V
00901-A-011
Figure 11. Open-Loop Gain vs. Load Resistance
OUTPUT VOLTAGE (V)
0.1
OPEN-LOOP GAIN (k
–2.5
100
10
1
1k
–2.0 –0.5 0.5 1.0 2.5
R
L
= 10kΩ
–1.5 –1.0 0 1.5 2.0
R
L
= 1kΩ
R
L
= 100Ω
00901-A-012
V V
)
Figure 12. Open-Loop Gain vs. Output Voltage, V
S
= ±2.5 V
FREQUENCY (Hz)
–40
–110
–50
–80
–90
–100
–60
–70
100 100k
THD (dB)
1k 10k
V
S
= +3V
V
OUT
= 2V p-p
R
L
= 100Ω
V
S
= +3V,
V
OUT
= 2V p-p,
R
L
= 5kΩ
V
S
= +5V
V
OUT
= 2V p-p
R
L
= 5kΩ
V
S
= ±15V
V
OUT
= 10V p-p,
R
L
= 600Ω
V
S
= ±2.5V
V
OUT
= 2V p-p
R
L
= 1kΩ
1M
ALL
OTHERS
00901-A-013
Figure 13. Total Harmonic Distortion vs. Frequency
TEMPERATURE (°C)
86
90
89
88
87
95
91
92
93
94
OPEN-LOOP GAIN (dB)
–55
V
S
= 5V
R
L
= 2kΩ
–25 5 35 65 95 125
00901-A-014
Figure 14. Open-Loop Gain vs. Temperature
FREQUENCY (Hz)
100
–20
80
40
20
0
60
100 100M1k 10k 100k 1M 10M
OPEN-LOOP GAIN (dB)
PHASE MARGIN (Degrees)
PHASE
GAIN
R
L
= 2kΩ
C
L
= 20pF
100
–20
80
40
20
0
60
00901-A-015
Figure 15. Open-Loop Gain and Phase vs. Frequency
FREQUENCY (Hz)
100
30
3
10 1M100 1k 10k 100k
10
V
S
= 5V
INPUT VOLTAGE NOISE (nV/√Hz)
00901-A-016
Figure 16. Input Voltage Noise vs. Frequency