Datasheet

AD797
Rev. H | Page 8 of 20
00846-016
5
3
1
2
4
INPUT VOLTAGE NOISE (nV/√Hz)
0
10M10010 1M100k10k1k
FREQUENCY (Hz)
Figure 15. Input Voltage Noise Spectral Density
00846-017
FREQUENCY (Hz)
0
100M1k100 10M1M100k10k
OPEN-LOOP GAIN (dB)
120
60
20
40
100
80
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 25.
Figure 16. Open-Loop Gain and Phase Margin vs. Frequency
00846-018
TEMPERATURE (°C)
–60 140–40 100 120806040200–20
INPUT OFFSET CURRENT (nA)
300
150
0
–150
–300
UNDER COMPENSATED
OVERCOMPENSATED
Figure 17. Input Offset Current vs. Temperature
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 18. 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 19. Open-Loop Gain vs. Load Resistance
00846-021
FREQUENCY (Hz)
MAGNITUDE OF OUTPUT IMPEDANCE (
Ω)
100
0.01
10 1M
10
0.1
100
1
10k 100k1k
WITHOUT C
N
*
WITH C
N
*
*SEE FIGURE 32.
Figure 20. Magnitude of Output Impedance vs. Frequency