AD795
1.00
10
–4
INPUT BIAS CURRENT – Amperes
0.95
10
–5
10
–6
10
–7
10
–8
10
–9
10
–10
10
–11
10
–12
10
–13
10
–14
–6
–I
IN
+I
IN
INPUT BIAS CURRENT – pA
0.90
0.85
0.80
0.75
0.70
0.65
0.60
–15
–10
–5
0
+5
+10
+15
COMMON MODE VOLTAGE – Volts
–5
4
–1
1
2
3
–4 –3 –2
0
DIFFERENTIAL INPUT VOLTAGE – ±Volts
5
6
Figure 7. Input Bias Current vs. Common-Mode Voltage
Figure 8. Input Bias Current vs. Differential Input Voltage
15
f = 1kHz
VOLTAGE NOISE – nV/√Hz
100
1k
Noise Bandwidth: 0.1 to 10Hz
VOLTAGE NOISE
VOLTAGE NOISE –
µV
p-p
12.5
10
CURRENT NOISE – fA/√Hz
100
10
1.0
CURRENT NOISE
7.5
0.1
10
5
–60
–40
–20
0
20
40
60
80
100
120
TEMPERATURE –
°
C
0.01
140
1.0
10
3
10
4
10
5
10
6
10
7
SOURCE RESISTANCE –
Ω
10
8
10
9
Figure 9. Voltage and Current Noise Spectral Density vs.
Temperature
Figure 10. Input Voltage Noise vs. Source Resistance
50
SAMPLE SIZE = 344
40
PERCENTAGE OF UNITS
f = 0.1 TO 10Hz
VOLTAGE NOISE (REFERRED TO INPUT) – nV/√Hz
1k
100
30
20
10
10
1.0
1
10
100
1k
10k
100k
1M
10M
FREQUENCY – Hz
0
0
1
2
0.1 TO 10Hz INPUT VOLTAGE NOISE p-p –
µV
3
Figure 11. Typical Distribution of Input Voltage Noise
Figure 12. Input Voltage Noise Spectral Density
REV. A
–5–
AD [ ANALOG DEVICES ]
