TYPICAL PERFORMANCE CURVES
At T
A
= +25°C, V
S
=
±15V,
R
L
= 10kΩ, connected to ground, unless otherwise noted.
OPEN-LOOP GAIN/PHASE vs FREQUENCY
100
80
G
60
0
–40°C
POWER SUPPLY AND COMMON-MODE REJECTION
vs FREQUENCY
100
80
Phase Shift (°)
–45
φ
–90
PSRR, CMRR (dB)
+PSRR
60
CMRR
Gain (dB)
40
20
0
–20
1
10
100
1k
10k
100k
1M
+85°C
+25°C
40
–PSRR
20
–135
–180
0
10M
10
100
1k
10k
100k
1M
Frequency (Hz)
Frequency (Hz)
INPUT VOLTAGE AND CURRENT NOISE
SPECTRAL DENSITY vs FREQUENCY
1k
1
140
120
CHANNEL SEPARATION vs FREQUENCY
Voltage Noise (nV/√Hz)
100
Voltage Noise
10
Channel Separation (dB)
Current Noise (fA/√Hz)
100
80
60
40
20
100
1k
10k
Frequency (Hz)
100k
1M
Dual and quad devices.
G = 1, all channels.
Quad measured channel
A to D or B to C—other
combinations yield improved
rejection.
10
Current Noise
1
1
0.1
1
10
100
1k
10k
100k
1M
Frequency (Hz)
0.1
INPUT BIAS CURRENT vs TEMPERATURE
10k
INPUT BIAS CURRENT
vs INPUT COMMON-MODE VOLTAGE
1n
Input bias current is a
function of the voltage
between the V– supply
and the inputs.
100p
Input Bias Current (pA)
100
10
Input Bias Current (pA)
–75
–50
–25
0
25
50
75
100
125
1k
10p
1
0.1
Temperature (°C)
1p
–15
–10
–5
0
5
10
15
Common-Mode Voltage (V)
®
OPA137, 2137, 4137
4
TI [ TEXAS INSTRUMENTS ]
