ISL28291 Intersil Corporation, ISL28291 Datasheet - Page 5

• Manufacturer Part Number: ISL28291
• Description: Single And Dual Ultra-low Noise, Rail-to-rail, Op Amp
• Manufacturer: Intersil Corporation

Typical Performance Curves
FIGURE 1. GAIN vs FREQUENCY FOR VARIOUS R
-8
-1
-2
-3
-4
-5
-6
-7
FIGURE 5. INPUT IMPEDANCE vs FREQUENCY
-1
-2
-3
-4
-5
-6
-7
100k
2
1
0
3
2
1
0
10k
10k
10k
100
1M
1k
10k
V+ = 5V
A
C
V
V+ = 5V
A
R
C
FIGURE 3. -3dB BANDWIDTH vs V
V
L
OUT
V
L
L
= +1
= 10pF
V+ = 5V, 3V
ENABLED AND
DISABLED
V
= +1
= 10kΩ
= 10pF
SOURCE
= 10mV
100k
100k
100k
FREQUENCY (Hz)
= 1V
P-P
V
V
FREQUENCY (Hz)
OUT
OUT
FREQUENCY (Hz)
V
V
P-P
OUT
OUT
= 1V
= 100mV
5
1M
1M
= 1mV
= 10mV
P-P
1M
R
P-P
L
P-P
R
R
= 10k
P-P
L
L
R
= 1k
L
= 100
10M
= 100k
10M
10M
OUT
LOAD
ISL28191, ISL28291
100M
100M
100M
FIGURE 6. DISABLED OUTPUT IMPEDANCE vs FREQUENCY
FIGURE 2. GAIN vs FREQUENCY FOR VARIOUS C
FIGURE 4. FREQUENCY RESPONSE vs CLOSED LOOP
-10
70
60
50
40
30
20
10
0
10k
100k
-10
AV = 1000, R
10k
10
AV = 100, R
100
AV = 10, R
-2
-4
-6
-8
AV = 1, R
1k
8
6
4
2
0
10k
10k
V+ = 5V
A
R
V
V+ = 5V, 3V
V
GAIN
V
L
OUT
SOURCE
= +1
= 10kΩ
F
F
= 10mV
100k
F
= 0, R
F
= 4.42k, R
100k
= 49.9k, R
= 499k, R
100k
= 1V
G
FREQUENCY (Hz)
P-P
FREQUENCY (Hz)
= INF
FREQUENCY (Hz)
P-P
G
G
G
= 499
= 499
= 499
1M
1M
1M
C
C
C
L
C
C
L
L
L
= 32pF
L
= 57pF
= 57pF
= 110pF
= 10pF
V+ = 5V
R
V
OUT
L
C
10M
L
= 10k
10M
= 20pF
10M
= 100mV
September 19, 2007
P-P
LOAD
100M
100M
100M
FN6156.4