Datasheet

AD708
Rev. C | Page 7 of 16
40
0
10
20
30
35
5
15
25
0 1 10 100
05789-008
INVERTING OR NONINVERTING INPU
T
BIAS CURRENT (mA)
DIFFERENTIAL VOLTAGE (±V)
Figure 8. Input Bias Current vs. Differential Input Voltage
45
40
0
10
20
30
35
5
15
25
0.1 1 10 100
05789-009
INPUT VOLTAGE NOISE (nV/ Hz)
FREQUENCY (Hz)
1/F CORNER
0.7Hz
Figure 9. Input Noise Spectral Density
05789-010
TIME (1s/DIV)
VOLTAGE NOISE (100nV/DIV)
1s
Figure 10. 0.1 Hz to 10 Hz Voltage Noise
16
14
12
10
8
6
4
2
0
–60 140120100806040200–20–40
05789-011
OPEN-LOOP GAIN (V/µV)
TEMPERATURE (°C)
V
OUT
= ±10V
R
L
= 10k
R
L
= 2k
Figure 11. Open-Loop Gain vs. Temperature
16
14
12
10
8
6
4
2
0
022015105
05789-012
OPEN-LOOP GAIN (V/µV)
SUPPLY VOLTAGE (V)
5
R
LOAD
= 2k
Figure 12. Open-Loop Gain vs. Supply Voltage
140
120
0
30
60
90
120
150
180
100
80
60
40
20
0
–20
10M1M100k10k1k1001010.10.01
05789-013
OPEN-LOOP GAIN (dB)
PHASE (Degrees)
FREQUENCY (Hz)
PHASE
MARGIN = 43°
GAIN
R
L
= 2k
C
L
= 1000pF
Figure 13. Open-Loop Gain and Phase vs. Frequency