OPA137N-250 Datasheet, PDF (4/15 Pages) Texas Instruments – LOW COST FET-INPUT OPERATIONAL AMPLIFIERS MicroAmplifier ™ Series

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