Datasheet

5
®
OPA111
TYPICAL PERFORMANCE CURVES (CONT)
T
A
= +25°C, V
CC
= ±15VDC unless otherwise noted.
TOTAL* INPUT VOLTAGE NOISE SPECTRAL
DENSITY vs SOURCE RESISTANCE
100
Frequency (Hz)
1k 10k 100k1010.1
1k
100
10
1
Voltage Noise (nV/ Hz)
R
S
= 10MΩ
R
S
= 1MΩ
R
S
= 100kΩ
R
S
= 100Ω
BM
*Includes contribution
from source resistance.
TOTAL* INPUT VOLTAGE NOISE (PEAK-TO-PEAK)
vs SOURCE RESISTANCE
10
4
10
5
10
6
10
7
10
8
10
9
10
10
1k
100
10
1
Voltage Noise (µVp-p)
*Includes contribution
from source resistance.
Source Resistance (Ω)
BM
f
B
= 0.1Hz to 10Hz
VOLTAGE AND CURRENT NOISE SPECTRAL
DENSITY vs TEMPERATURE
12
10
8
6
4
–50 –25 0 25 50 75 100 125
Temperature (°C)
–75
100
10
1
0.1
0.01
f
O
= 1kHz
Current Noise (fA/√Hz)

Voltage Noise (nV/√Hz)

BIAS AND OFFSET CURRENT
vs TEMPERATURE
–50
Ambient Temperature (°C)
–25
0 25 50 75 100 125
1k
100
10
1
0.1
0.01
Bias Current (pA)
BM
1k
100
10
1
0.1
0.01
Offset Current (pA)
BIAS AND OFFSET CURRENT
vs INPUT COMMON-MODE VOLTAGE
–15 –10 –5 0 5 10 15
10
1
0.1
0.01
Bias Current (pA)
10
1
0.1
0.01
Offset Current (pA)
Common-Mode Voltage (V)
Bias Current
Offset Current
POWER SUPPLY REJECTION
vs FREQUENCY
1
Frequency (Hz)
10 100 1k 10k 100k 1M 10M
Power Supply Rejection (dB)
140
120
100
80
60
40
20
0