Datasheet

MAX4012/MAX4016/MAX4018/MAX4020
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
______________________________________________________________________________________ 13
R
G
R
F
R
ISO
50Ω
C
L
V
OUT
V
IN
R
TIN
MAX40_ _
Figure 5. Driving a Capacitive Load through an Isolation Resistor
30
25
20
5
10
15
0
CAPACITIVE LOAD (pF)
500 100 200150 250
ISOLATION RESISTANCE, R
ISO
(Ω)
Figure 6. Capacitive Load vs. Isolation Resistance
6
-4
100k 10M 100M1M 1G
-2
FREQUENCY (Hz)
GAIN (dB)
0
2
4
5
-3
-1
1
3
C
L
= 10pF
C
L
= 15pF
C
L
= 5pF
Figure 7. Small-Signal Gain vs. Frequency with Load
Capacitance and No Isolation Resistor
3
-7
100k 10M 100M1M 1G
-5
FREQUENCY (Hz)
GAIN (dB)
-3
-1
1
2
-6
-4
-2
0
C
L
= 68pF
R
ISO
= 27Ω
C
L
= 120pF
C
L
= 47pF
Figure 8. Small-Signal Gain vs. Frequency with Load
Capacitance and 27Ω Isolation Resistor