Datasheet

AD8421 Data Sheet
Rev. 0 | Page 16 of 28
100
80
60
–100
–80
–60
–40
–20
0
20
40
–5–4–3–2–1012345
NONLINEARITY (ppm)
OUTPUT VOLTAGE (V)
GAIN = 1000
R
L
= 600Ω
10123-073
Figure 40. Gain Nonlinearity (G = 1000), R
L
= 600 Ω, V
OUT
= ±5 V
VOLTAGE NOISE SPECTRAL DENSITY (nV/√Hz)
1
100
10
1k
1 10 100 1k 10k 100k
FREQUENCY (Hz)
GAIN = 1
GAIN = 10
GAIN = 100
GAIN = 1000
10123-037
Figure 41. RTI Voltage Noise Spectral Density vs. Frequency
1s/DIV
G = 1000, 40nV/DIV
G = 1, 1µV/DIV
10123-038
Figure 42. 0.1 Hz to 10 Hz RTI Voltage Noise (G = 1, G = 1000)
10k
1k
100
10
0.1 1 10 100 1k 10k 100k
CURRENT NOISE (fA/√Hz)
FREQUENCY (Hz)
10123-039
Figure 43. Current Noise Spectral Density vs. Frequency
1s/DIV5pA/DIV
10123-040
Figure 44. 0.1 Hz to 10 Hz Current Noise
30
25
0
5
10
15
20
10 100 1k 10k 100k 1M 10M
OUTPUT VOLTAGE (V p-p)
FREQUENCY (Hz)
10123-045
Figure 45. Large Signal Frequency Response