
7
FN6301.4
June 23, 2009
FIGURE 7. PSRR vs FREQUENCY
FIGURE 8. CMRR vs FREQUENCY
FIGURE 9. ISL28176 INPUT VOLTAGE NOISE DENSITY vs
FREQUENCY
FIGURE 10. ISL28276, ISL28476 VOLTAGE NOISE vs
FREQUENCY
FIGURE 11. ISL28176 INPUT CURRENT NOISE DENSITY vs
FREQUENCY
FIGURE 12. ISL28276, ISL28476 CURRENT NOISE vs
FREQUENCY
Typical Performance Curves (Continued)
0
PSRR
(dB)
20
40
100
120
60
80
10
10k
1M
FREQUENCY (Hz)
100
100k
1k
PSRR -
110
90
70
50
30
10
PSRR +
VSOURCE = 1VP-P
RL = 100kΩ
V+, V- = ±2.5V
AV = +1
10
CMR
R
(dB)
40
50
60
90
100
70
80
20
30
10
1k
10k
100k
FREQUENCY (Hz)
100
VSOURCE = 1VP-P
RL = 100kΩ
V+, V- = ±2.5V
AV = +1
10
100
1000
0.1
1
10
100
1k
10k
FREQUENCY (Hz)
IN
P
U
T
VO
L
T
AGE
NOI
SE
(nV
√Hz)
V+ = 5V
RL = OPEN
AV = +1
CL = 8.3pF
100k
10
100
1k
1
10
100
1k
10k
100k
FREQUENCY (Hz)
V
O
LTA
G
E
N
O
IS
E
(n
V/
√Hz)
0.1
1
10
0.1
1
10
100
1k
10k
FREQUENCY (Hz)
INPUT
CURR
E
N
T
NOISE
(pA
√Hz)
V+ = 5V
RL = OPEN
AV = +1
CL = 8.3pF
100k
1
10
100
1k
10k
100k
FREQUENCY (Hz)
0.1
1.0
10.0
C
URRENT
NOISE
(pA/
√Hz
)
ISL28176, ISL28276, ISL28476