5
FN6345.3
May 14, 2009
Typical Performance Curves
V+ = +5V, V- = GND, VCM = 1/2V+, TA = +25°C, unless otherwise specified.
FIGURE 1. AMPLIFIER “A” (IN-AMP) FREQUENCY
RESPONSE vs CLOSED LOOP GAIN
FIGURE 2. AMPLIFIER “A” (IN-AMP) FREQUENCY
RESPONSE vs CLOSED LOOP GAIN, VCM = 1/2V+
FIGURE 3. AMPLIFIER “A” (IN-AMP) FREQUENCY
RESPONSE vs CLOSED LOOP GAIN
FIGURE 4. AMPLIFIER “A” (IN-AMP) FREQUENCY
RESPONSE vs SUPPLY VOLTAGE
FIGURE 5. AMPLIFIER “A” (IN-AMP) FREQUENCY
RESPONSE vs CLOAD
FIGURE 6. AMPLIFIER “A” (IN-AMP) CMRR vs FREQUENCY
30
40
50
60
70
80
90
FREQUENCY (Hz)
GAI
N
(
d
B)
COMMON-MODE INPUT = V+
1
10
100
1k
10k
100k
1M
GAIN = 1,000
GAIN = 10,000
GAIN = 500
GAIN = 2,000
GAIN = 5,000
GAIN = 200
GAIN = 100
30
40
50
60
70
80
90
FREQUENCY (Hz)
G
IN
(
d
B)
1
10
100
1k
10k
100k
1M
GAIN = 1,000
GAIN = 10,000
GAIN = 500
GAIN = 2,000
GAIN = 5,000
GAIN = 200
GAIN = 100
COMMON-MODE INPUT = 1/2V+
30
40
50
60
70
80
90
FREQUENCY (Hz)
GAI
N
(
d
B)
1
10
100
1k
10k
100k
1M
GAIN = 1,000
GAIN = 10,000
GAIN = 500
GAIN = 2,000
GAIN = 5,000
GAIN = 200
GAIN = 100
COMMON-MODE INPUT = VM +10mV
100
10k
1k
100k
1M
45
40
35
30
25
20
15
10
5
0
FREQUENCY (Hz)
GAI
N
(
d
B)
V+ = 5V
V+ = 2.4V
AV = 100
RL = 10kΩ
CL = 10pF
RF/RG = 100
RF = 10kΩ
RG = 100Ω
10
GAI
N
(d
B)
100
10k
1k
100k
1M
FREQUENCY (Hz)
10
50
45
40
35
30
25
AV = 100
R = 10k
Ω
CL = 10pF
RF/RG = 100
RF = 10kΩ
RG = 100Ω
820pF
56pF
1200pF
2200pF
0
20
40
60
80
100
120
10
100
1k
10k
100k
AV = 100
1M
FREQUENCY (Hz)
CMRR
(dB)
ISL28274, ISL28474