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AD8421TRMZ-EP

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
Enhanced Product AD8421-EP
Rev. 0 | Page 13 of 20
0 0.010.020.030.040.050.060.070.080.090.10
OUTPUT VOLTAGE SWING (V)
REFERRED TO SUPPLY VOLTAGES
OUTPUT CURRENT (A)
+
V
S
–V
S
–2
–4
+4
–6
+2
+6
–55°C
–40°C
+25°C
+85°C
+105°C
+125°C
11139-136
Figure 34. Output Voltage Swing vs. Output Current
5
4
3
–5
–4
–3
–2
–1
0
1
2
–10 –8 –6 –4 –2 0 2 4 6 8 10
NONLINEARITY (ppm)
OUTPUT VOLTAGE (V)
GAIN = 1
R
L
= 2kΩ
R
L
= 10kΩ
11139-035
Figure 35. Gain Nonlinearity (G = 1), R
L
= 10 kΩ, 2 kΩ
5
4
3
–5
–4
–3
–2
–1
0
1
2
–10 –8 –6 –4 –2 0 2 4 6 8 10
NONLINEARITY (ppm)
OUTPUT VOLTAGE (V)
GAIN = 1
R
L
= 600Ω
11139-036
Figure 36. Gain Nonlinearity (G = 1), R
L
= 600 Ω
100
80
60
–100
–80
–60
–40
–20
0
20
40
–10 –8 –6 –4 –2 0 2 4 6 8 10
NONLINEARITY (ppm)
OUTPUT VOLTAGE (V)
GAIN = 1000
R
L
= 600Ω
11139-072
Figure 37. Gain Nonlinearity (G = 1000), R
L
= 600 Ω, V
OUT
= ±10 V
100
80
60
–100
–80
–60
–40
–20
0
20
40
–5 –4 –3 –2 –1 0 1 2 3 4 5
NONLINEARITY (ppm)
OUTPUT VOLTAGE (V)
GAIN = 1000
R
L
= 600Ω
11139-073
Figure 38. 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
11139-037
Figure 39. RTI Voltage Noise Spectral Density vs. Frequency
AD8421-EP Enhanced Product
Rev. 0 | Page 14 of 20
1s/DIV
G = 1000, 40nV/DIV
G = 1, 1µV/DIV
11139-038
Figure 40. 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)
11139-039
Figure 41. Current Noise Spectral Density vs. Frequency
1s/DIV5pA/DIV
11139-040
Figure 42. 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)
11139-045
Figure 43. Large Signal Frequency Response
1µs/DIV
5V/DIV
0.002%/DIV
720ns TO 0.01%
1.12µs TO 0.001%
11139-041
Figure 44. Large Signal Pulse Response and Settling Time (G = 1),
10 V Step, V
S
= ±15 V, R
L
= 2 kΩ, C
L
= 100 pF
1µs/DIV
5V/DIV
0.002%/DIV
420ns TO 0.01%
604ns TO 0.001%
11139-042
Figure 45. Large Signal Pulse Response and Settling Time (G = 10),
10 V Step, V
S
= ±15 V, R
L
= 2 kΩ, C
L
= 100 pF
Enhanced Product AD8421-EP
Rev. 0 | Page 15 of 20
1µs/DIV
5V/DIV
0.002%/DIV
704ns TO 0.01%
764ns TO 0.001%
11139-043
Figure 46. Large Signal Pulse Response and Settling Time (G = 100),
10 V Step, V
S
= ±15 V, R
L
= 2 kΩ, C
L
= 100 pF
4µs/DIV
5V/DIV
0.002%/DIV
3.8µs TO 0.01%
5.76µs TO 0.001%
11139-044
Figure 47. Large Signal Pulse Response and Settling Time (G = 1000),
10 V Step, V
S
= ±15 V, R
L
= 2 kΩ, C
L
= 100 pF
2500
0
220
SETTLING TIME (ns)
STEP SIZE (V)
500
1000
1500
2000
4 6 8 1012141618
SETTLED TO 0.01%
SETTLED TO 0.001%
GAIN = 1
11139-054
Figure 48. Settling Time vs. Step Size (G = 1), R
L
= 2 kΩ, C
L
= 100 pF
50mV/DIV
GAIN = 1
1µs/DIV
11139-046
Figure 49. Small Signal Pulse Response (G = 1), R
L
= 600 Ω, C
L
= 100 pF
50mV/DIV
GAIN = 10
1µs/DIV
11139-047
Figure 50. Small Signal Pulse Response (G = 10), R
L
= 600 Ω, C
L
= 100 pF
20mV/DIV
GAIN = 100
1µs/DIV
11139-048
Figure 51. Small Signal Pulse Response (G = 100), RL = 600 Ω, CL = 100 pF
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

AD8421TRMZ-EP

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Instrumentation Amplifiers 3nV/vHz noise Precision InAmp
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