Data Sheet
160
BOTH BANDWIDTH MODES
ONLY BW LIMIT CHANGES
140
120
100
GAIN = 1
LOW BANDWIDTH MODE ONLY
80
BW LIMIT
60
40
GAIN = 1
20
GAIN = 10
GAIN = 100
GAIN = 1000
0
0.1
1
10
100
1k
10k
FREQUENCY (Hz)
Figure 28. CMRR vs. Frequency
100k
160
BOTH BANDWIDTH MODES
ONLY BW LIMIT CHANGES
140
120
100
GAIN = 1
LOW BANDWIDTH MODE ONLY
80
BW LIMIT
60
40
20
0
0.1
GAIN = 1
GAIN = 10
GAIN = 100
GAIN = 1000
1
10
100
1k
FREQUENCY (Hz)
10k
100k
Figure 29. CMRR vs. Frequency, 1 kΩ Source Imbalance
10k
G = 1, LOW BANDWIDTH MODE
G = 10, LOW BANDWIDTH MODE
G = 10, HIGH BANDWIDTH MODE
G = 100, LOW BANDWIDTH MODE
G = 100, HIGH BANDWIDTH MODE
1k
100
10
0.1
1
10
100
1k
10k
100k
FREQUENCY (Hz)
Figure 30. Voltage Noise Spectral Density vs. Frequency
AD8237
0.4µV/DIV
1s/DIV
Figure 31. 0.1 Hz to 10 Hz RTI Voltage Noise
1k
VALID FOR BOTH BANDWIDTH MODES
100
10
1
10
100
1k
10k
100k
FREQUENCY (Hz)
Figure 32. Current Noise Spectral Density vs. Frequency
1.5pA/DIV
1s/DIV
Figure 33. 0.1 Hz to 10 Hz RTI Current Noise
Rev. 0 | Page 13 of 28