AD820
10M
40
POSITIVE
RAIL
OPEN-LOOP GAIN (V/V)
20
INPUT VOLTAGE (µV)
R
L
= 2kΩ
R
L
= 20kΩ
NEGATIVE
RAIL
1M
V
S
= ±15V
V
S
= 0V, +5V
100k
0
POSITIVE
RAIL
–20
00873-011
POSITIVE
RAIL
NEGATIVE
RAIL
00873-014
00873-016
00873-015
R
L
= 100kΩ
–40
0
60
120
180
10k
100
NEGATIVE RAIL
240
1k
10k
100k
300
LOAD RESISTANCE (Ω)
OUTPUT VOLTAGE FROM RAILS (mV)
Figure 10. Open-Loop Gain vs. Load Resistance
Figure 13. Input Error Voltage vs. Output Voltage within 300 mV of Either
Supply Rail for Various Resistive Loads; V
S
= ±5 V
1k
10M
OPEN-LOOP GAIN (V/V)
1M
R
L
= 100kΩ
V
S
= ±15V
V
S
= 0V, +5V
V
S
= ±15V
V
S
= 0V, +5V
INPUT VOLTAGE NOISE (nV/√Hz)
00873-012
100
R
L
= 10kΩ
100k
10
V
S
= ±15V
R
L
= 600Ω
V
S
= 0V, +5V
10k
–60
–40
–20
0
20
40
60
80
100
120
140
1
1
10
100
FREQUENCY (Hz)
1k
10k
TEMPERATURE (ºC)
Figure 11. Open-Loop Gain vs. Temperature
Figure 14. Input Voltage Noise vs. Frequency
300
–40
–50
–60
R
L
= 10kΩ
A
CL
= –1
200
INPUT VOLTAGE (µV)
100
R
L
= 10kΩ
0
THD (dB)
R
L
= 100kΩ
–70
–80
–90
–100
V
S
= ±15V; V
OUT
= 20V p-p
V
S
= ±5V; V
OUT
= 9V p-p
V
S
= 0V, +5V; V
OUT
= 4.5V p-p
–200
R
L
= 600Ω
00873-013
–100
–110
100
–300
–16
–12
–8
–4
0
4
8
12
16
1k
10k
FREQUENCY (Hz)
100k
OUTPUT VOLTAGE (V)
Figure 12. Input Error Voltage vs. Output Voltage for Resistive Loads
Figure 15. Total Harmonic Distortion vs. Frequency
Rev. E | Page 11 of 24
AD [ ANALOG DEVICES ]
