Datasheet

5
®
OPA241, 2241, 4241
OPA251, 2251, 4251
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
0.01 0.1
160
140
120
100
80
60
40
20
0
–20
Voltage Gain (dB)
180
160
140
120
100
80
60
40
20
0
Phase (°)
Frequency (Hz)
1 10 100 1k 10k 100k
Φ
G
V
S
= ±15V
V
S
= +5V
POWER SUPPLY and COMMON-MODE
REJECTION RATIO vs FREQUENCY
140
120
100
80
60
40
20
0
Power Supply Rejection Ratio (dB)
Frequency (Hz)
0.1 1 10 100 1k 10k 100k
–PSRR
+PSRR
CMRR
V
S
= ±15V
V
S
= ±5V
INPUT VOLTAGE AND CURRENT
NOISE SPECTRAL DENSITY vs FREQUENCY
1k
100
10
1k
100
10
Voltage Noise (nV/÷Hz)
Frequency (Hz)
0.1 1 10 100 1k 10k
Current Noise (fA/√Hz)
Current Noise
Voltage Noise
CHANNEL SEPARATION vs FREQUENCY
Frequency (Hz)
Channel Separation (dB)
140
130
120
110
100
90
80
70
10010 1k 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.
QUIESCENT CURRENT vs SUPPLY VOLTAGE
Total Supply Voltage (V)
Quiescent Current (µA)
30
28
26
24
22
0 5 10 15 20 25 30 35 40
Per Amplifier
QUIESCENT CURRENT vs TEMPERATURE
Temperature (°C)
Quiescent Current (µA)
40
35
30
25
20
15
–75 –50 –25 0 25 50 75 100 125
V
S
= ±15V
V
S
= +5V
Per Amplifier