TYPICAL CHARACTERISTICS
At T
A
= +25°C, V
S
=
±15V,
and R
L
= 2kΩ, unless otherwise noted.
OPEN-LOOP GAIN/PHASE vs FREQUENCY
120
100
–45
0
120
POWER SUPPLY AND COMMON-MODE REJECTION
vs FREQUENCY
120
+PSR
100
80
–PSR
CMR
40
20
0
40
20
0
10
100
1k
10k
100k
1M
Frequency (Hz)
60
100
80
60
Voltage Gain (dB)
80
60
40
–90
–135
20
0
–20
1
10
100
1k
10k
100k
1M
10M
Frequency (Hz)
G
–180
INPUT VOLTAGE AND CURRENT NOISE
SPECTRAL DENSITY vs FREQUENCY
1k
1k
160
Phase Shift (°)
∅
CHANNEL SEPARATION vs FREQUENCY
Channel Separation (dB)
R
L
=
∞
140
Voltage Noise (nV/√Hz)
100
Voltage Noise
100
Current Noise (fA/√Hz)
120
Dual and quad devices.
G = 1, all channels.
Quad measured channel
A to D or B to C—other
combinations yield improved
rejection.
10
100
1k
Frequency (Hz)
R
L
= 2kΩ
10
10
100
Current Noise
1
1
10
100
1k
Frequency (Hz)
10k
100k
1
1M
80
10k
100k
INPUT BIAS AND INPUT OFFSET CURRENT
vs TEMPERATURE
Input Bias and Input Offset Current (pA)
INPUT BIAS CURRENT
vs INPUT COMMON-MODE VOLTAGE
1k
Input bias current is a
function of the voltage
between the V– supply
and the inputs.
100
10k
1k
V
CM
= 0V
100
10
1
0.1
I
B
Input Bias Current (pA)
I
OS
V
S
=
±15V
10
V
S
=
±5V
0.01
–75
–50
–25
0
25
50
75
100
125
Ambient Temperature (°C)
1
–15
–10
–5
0
5
10
15
Common-Mode Voltage (V)
4
OPA131, 2131, 4131
www.ti.com
SBOS040A
Common-Mode Rejection (dB)
Power Supply Rejection (dB)
TI [ TEXAS INSTRUMENTS ]
