AD795 Datasheet, PDF (5/16 Pages) Analog Devices – Low Power, Low Noise Precision FET Op Amp

1.00
0.95
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
Figure 7. Input Bias Current vs. Common-Mode Voltage
AD795
10^–4
10^–5
10^–6
10^–7
10^–8
10^–9
10^–10
–I_IN
+I_IN
10^–11
10^–12
10^–13
10^–14
–6 –5 –4 –3 –2 –1 0
1 23
45 6
DIFFERENTIAL INPUT VOLTAGE – ±Volts
Figure 8. Input Bias Current vs. Differential Input Voltage
15
100
f = 1kHz
12.5
10
VOLTAGE NOISE
10
1.0
CURRENT NOISE
7.5
0.1
5
–60 –40 –20
0 20 40 60 80
TEMPERATURE – °C
100 120
0.01
140
Figure 9. Voltage and Current Noise Spectral Density vs.
Temperature
50
SAMPLE SIZE = 344
40
30
f = 0.1 TO 10Hz
20
10
0
0
1
2
3
0.1 TO 10Hz INPUT VOLTAGE NOISE p-p – µV
Figure 11. Typical Distribution of Input Voltage Noise
1k
Noise Bandwidth: 0.1 to 10Hz
100
10
1.0
10³
10⁴
10⁵
10⁶
10⁷
10⁸
10⁹
SOURCE RESISTANCE – Ω
Figure 10. Input Voltage Noise vs. Source Resistance
1k
100
10
1.0
1
10
100
1k
10k 100k 1M
10M
FREQUENCY – Hz
Figure 12. Input Voltage Noise Spectral Density
REV. A
–5–