OP281 Analog Devices, OP281 Datasheet - Page 9

• Manufacturer Part Number: OP281
• Description: Ultralow Power, Rail-to-Rail Output Operational Amplifier (Dual)
• Manufacturer: Analog Devices

Specifications of OP281

• -3db Bandwidth: 105kHz
• Slew Rate: 28mV/µs
• Vos: 100µV
• Ib: 3nA
• # Opamps Per Pkg: 2
• Input Noise (nv/rthz): 75nV/rtHz
• Vcc-vee: 2.7V to 12V
• Isy Per Amplifier: 5µA
• Packages: SOIC,SOP

–10
–20
–30
70
60
50
40
30
20
10
0
–10
–20
–30
–40
100
60
50
40
30
20
10
0
0
10
Figure 17. Open-Loop Gain and Phase vs. Frequency
Figure 19. Voltage Noise Density vs. Frequency
Figure 18. Closed-Loop Gain vs. Frequency
2
100
1k
FREQUENCY (kHz)
FREQUENCY (Hz)
4
FREQUENCY (Hz)
1k
10k
V
T
R
6
10k
S
A
L
= ±5V
= 25°C
= 100kΩ TO GROUND
V
T
MARKER @ 67nV/√Hz
S
A
= 5V
= 25°C
100k
8
100k
V
T
R
A
S
L
= 25°C
= 5V
= ∞
1M
10
45
90
135
180
225
270
0
1M
Rev. D | Page 9 of 20
–10
160
140
120
100
–20
–40
90
80
70
60
50
40
30
20
10
80
60
40
20
50
45
40
35
30
25
20
15
10
0
0
5
0
Figure 22. Small-Signal Overshoot vs. Load Capacitance
1k
10
10
V
V
V
R
T
S
A
S
IN
L
= +5V
= +5V
= 100kΩ
= 25°C
= ±50mV
V
S
= ±5V
V
100
S
Figure 20. CMRR vs. Frequency
= +3V
Figure 21. PSRR vs. Frequency
10k
LOAD CAPACITANCE (pF)
FREQUENCY (Hz)
FREQUENCY (Hz)
1k
100k
100
10k
V
T
R
A
S
L
= ±5V, +5V, +3V, +2.7V
= 25°C
= ∞
OP281/OP481
1M
–OS
100k
T
+OS
A
= 25°C
10M
1000
1M