Datasheet

AD797 Data Sheet
Rev. I | Page 8 of 20
00846-016
5
0
10M
3
1
100
2
10
4
1M
100k10k1k
FREQUENCY
(Hz)
INPUT VOLTAGE NOISE (nV/√Hz)
Figure 15. Input Voltage Noise Spectral Density
00846-017
FREQUENCY (Hz)
OPEN-LOO
P
GAIN (dB)
120
0
100M
60
20
1k
40
100
100
80
10M1M100k10k
100
80
60
40
20
0
PHASE MARGIN (Degrees)
PHASE MARGIN
GAIN
WITHOUT
R
S
*
WITHOUT
R
S
*
WITH
R
S
*
WITH
R
S
*
*R
S
= 100
*SEE FIGURE 26.
Figure 16. Open-Loop Gain and Phase Margin vs. Frequency
00846-018
TEMPERATURE (°C)
INPUT OFFSET CURRENT (nA)
–60 140–40 100 120806040200–20
300
150
0
–150
–300
UNDER COMPENSATED
OVERCOMPENSATED
Figure 17. Input Offset Current vs. Temperature
1
10
100
1 10 100 1k 10k
CURRENT NOISE DENSITY (pA/√Hz)
FREQUENC
Y (Hz)
00846-055
Figure 18. Current Noise Density V
S
= ±15 V
00846-019
TEMPERATURE (°C)
SLEW R
A
TE (V/µs)
GAIN/BANDWIDTH PRODUCT (MHz (G = 1000))
–60 140–40 100 120806040200–20
120
110
100
90
80
35
30
25
20
15
GAIN/BANDWIDTH PRODUCT
SLEW RATE
RISING EDGE
SLEW RATE
FALLING EDGE
Figure 19. Slew Rate and Gain/Bandwidth Product vs. Temperature
00846-020
LOAD RESISTANCE (Ω)
OPEN-LOOP
GAIN (dB)
100 10k
1k
160
100
120
140
Figure 20. Open-Loop Gain vs. Load Resistance