TYPICAL PERFORMANCE CURVES
At T
A
= +25°C, and R
L
= 100kΩ connected to V
S
/2 (ground for V
S
=
±15V),
unless otherwise noted.
Curves apply to OPA241 and OPA251 unless specified.
OPEN-LOOP GAIN/PHASE vs FREQUENCY
160
140
120
180
160
140
G
Φ
120
140
POWER SUPPLY and COMMON-MODE
REJECTION RATIO vs FREQUENCY
V
S
=
±15V
V
S
=
±5V
CMRR
100
80
60
40
20
0
0.1
1
10
100
Frequency (Hz)
1k
10k
100k
–PSRR
+PSRR
Power Supply Rejection Ratio (dB)
120
Voltage Gain (dB)
100
80
60
40
20
0
–20
0.01
100
80
60
V
S
= ±15V
V
S
= +5V
40
20
10
100
1k
10k
0
100k
0.1
1
Frequency (Hz)
Phase (°)
CHANNEL SEPARATION vs FREQUENCY
140
130
INPUT VOLTAGE AND CURRENT
NOISE SPECTRAL DENSITY vs FREQUENCY
1k
1k
Channel Separation (dB)
Voltage Noise (nV/÷Hz)
120
110
100
90
80
70
10
100
1k
Frequency (Hz)
10k
100k
Dual and quad devices.
G = 1, all channels.
Quad measured channel
A to D or B to C—other
combinations yield improved
rejection.
100
Current Noise
100
Voltage Noise
10
0.1
1
10
100
1k
10k
Frequency (Hz)
10
QUIESCENT CURRENT vs SUPPLY VOLTAGE
30
Per Amplifier
QUIESCENT CURRENT vs TEMPERATURE
40
Per Amplifier
Quiescent Current (µA)
Quiescent Current (µA)
28
35
V
S
=
±15V
30
26
25
V
S
= +5V
24
20
22
0
5
10
15
20
25
30
35
40
Total Supply Voltage (V)
15
–75
–50
–25
0
25
50
75
100
125
Temperature (°C)
5
OPA241, 2241, 4241
OPA251, 2251, 4251
®
Current Noise (fA/√Hz)
BURR-BROWN [ BURR-BROWN CORPORATION ]
