AD8641 Analog Devices, AD8641 Datasheet - Page 9

• Manufacturer Part Number: AD8641
• Description: Low Power, Rail - to - Rail Output Precision JFET Amplifier in 5-lead SC70 and 8-lead SOIC lead-free packages
• Manufacturer: Analog Devices

Specifications of AD8641

• Vcc-vee: 5V to 26V
• Isy Per Amplifier: 290µA
• Packages: SC70,SOIC
• -3db Bandwidth: 3.5MHz
• Slew Rate: 3V/µs
• Vos: 50µV
• Ib: 0.25pA
• # Opamps Per Pkg: 1
• Input Noise (nv/rthz): 27.5nV/rtHz

Data Sheet
–10
–20
–30
–10
–20
–30
–10
–20
–30
70
60
50
40
30
20
10
70
60
50
40
30
20
10
70
60
50
40
30
20
10
0
0
0
10k
Figure 25. Open-Loop Gain and Phase Margin vs. Frequency
1k
1k
V
R
C
V
R
C
SY
SY
L
L
L
L
G = +100
G = +10
G = +1
= 2k
= 40pF
= 2k
= 40pF
G = +100
G = +10
=
G = +1
= 5V
±
Figure 26. Closed-Loop Gain vs. Frequency
Figure 27. Closed-Loop Gain vs. Frequency
Ω
Ω
13V
10k
10k
100k
GAIN
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
100k
100k
1M
1M
1M
PHASE
V
R
C
10M
SY
L
L
= 2k
= 40pF
10M
10M
= 5V
Ω
315
270
225
180
135
90
45
0
–45
–90
–135
Rev. E | Page 9 of 16
140
120
100
–20
–40
–60
140
120
100
–20
–40
–60
140
120
100
–20
–40
–60
80
60
40
20
80
60
40
20
80
60
40
20
0
0
0
1k
1k
1k
V
V
V
SY
SY
SY
= 5V
=
=
±
±
13V
13V
–PSRR
10k
10k
10k
Figure 28. CMRR vs. Frequency
Figure 29. CMRR vs. Frequency
Figure 30. PSRR vs. Frequency
+PSRR
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
AD8641/AD8642/AD8643
100k
100k
100k
1M
1M
1M
10M
10M
10M