
ISL28108, ISL28208, ISL28408
FN6935.5
March 4, 2014
Characterization vs Simulation Results
FIGURE 69. CHARACTERIZED INPUT NOISE VOLTAGE
FIGURE 70. SIMULATED INPUT NOISE VOLTAGE
FIGURE 71. CHARACTERIZED OPEN-LOOP GAIN, PHASE vs
FREQUENCY
FIGURE 72. SIMULATED OPEN-LOOP GAIN, PHASE vs FREQUENCY
FIGURE 73. CHARACTERIZED CLOSED LOOP GAIN vs FREQUENCY
FIGURE 74. SIMULATED CLOSED LOOP GAIN vs FREQUENCY
10
100
0.1
1
10
100
1k
10k
100k
IN
P
U
T
N
O
IS
E
V
O
L
T
A
G
E
(n
V
/√
H
z)
FREQUENCY (Hz)
100
0.1
1
10
100
1k
10k
100k
IN
P
U
T
N
O
IS
E
V
O
L
T
A
G
E
(n
V
/√
H
z)
FREQUENCY (Hz)
10
-100
-80
-60
-40
-20
0
20
40
60
80
100
120
140
160
180
200
1
10
100
1k
10k 100k 1M 10M 100M 1G
G
A
IN
(d
B
),
P
H
A
S
E
(°
)
FREQUENCY (Hz)
0.1
VS = ±15V
RL = 1M
SIMULATION
GAIN
PHASE
-100
-50
0
50
100
150
200
1
10
100
1k
10k 100k 1M 10M 100M 1G
G
A
IN
(d
B
),
P
H
A
S
E
(°
)
FREQUENCY (Hz)
0.1
VS = ±15V
RL = 1M
SIMULATION
PHASE
GAIN
-10
0
10
20
30
40
50
60
70
1k
10k
100k
1M
10M
G
A
IN
(d
B
)
FREQUENCY (Hz)
100
ACL = 1
ACL = 10
ACL = 1001
VS = ±5V, ±15V
CL = 4pF
VOUT = 100mVP-P
RL = 2k
ACL = 101
RF = 0, RG = ∞
RF = 10k, RG = 10
RF = 10k, RG = 100
RF = 10k, RG = 1.1k
-10
0
10
20
30
40
50
60
70
1k
10k
100k
1M
10M
G
A
IN
(d
B
)
FREQUENCY (Hz)
100
VS = ±5V, ±15V
CL = 4pF
VOUT = 100mVP-P
RL = 2k
RF = 0, RG = ∞
RF = 10k, RG = 1.1k
RF = 10k, RG = 100
RF = 10k, RG = 10