AD8641 Analog Devices, AD8641 Datasheet - Page 11

• 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
–0.2
–0.4
–0.6
–0.8
–1.0
–0.2
–0.4
–0.6
–0.8
–1.0
1.0
0.8
0.6
0.4
0.2
1.0
0.8
0.6
0.4
0.2
70
60
50
40
30
20
10
1
1
0
0
0
–5
–5
1
CH1
CH1
Figure 37. Small Signal Overshoot vs. Load Capacitance
V
R
V
A
S
IN
L
V
–4
–4
1.00V
1.00V
= ± 2.5V
= 10k
= +1
= 100mV p-p
Ω
–3
–3
Figure 38. 0.1 Hz to 10 Hz Noise
Figure 39. 0.1 Hz to 10 Hz Noise
–2
–2
10
CAPACITANCE (pF)
–1
–1
V
V
CM
CM
0
M1.00s
M1.00s
0
(V)
(V)
1
1
100
2
2
CH1 p-p = 4.26V
CH1 p-p = 4.06V
OS–
A CH1
A CH1
3
3
V
V
S
S
G = +1M
G = +1M
= ±2.5V
OS+
= ±13V
4
4
–20.0V
–20.0V
1000
5
5
Rev. E | Page 11 of 16
0.000001
0.00001
0.0001
0.004
0.001
100
100
1k
10
1k
10
1
1
10
10
1
Figure 42. Total Harmonic Distortion + Noise vs. Frequency
V
LOAD = 100kΩ
GAIN = +1
V
V
SY
SY
SY
= ±13V
= ±13V
= 5V
100
Figure 40. Voltage Noise Density
Figure 41. Voltage Noise Density
4V p-p INPUT
100
100
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
AD8641/AD8642/AD8643
8V p-p INPUT
1k
2V p-p INPUT
1k
1k
1V p-p INPUT
10k
2
10k
10k
0k