AD8643 Analog Devices, AD8643 Datasheet - Page 8

• Manufacturer Part Number: AD8643
• Description: Low Power, Rail-to-Rail Output, Precision JFET Quad Amplifier
• Manufacturer: Analog Devices

Specifications of AD8643

• -3db Bandwidth: 3.5MHz
• Slew Rate: 3V/µs
• Vos: 50µV
• Ib: 0.25pA
• # Opamps Per Pkg: 4
• Input Noise (nv/rthz): 27.5nV/rtHz
• Vcc-vee: 5V to 26V
• Isy Per Amplifier: 290µA
• Packages: CSP,SOIC

AD8641/AD8642/AD8643
Figure 21. Quiescent Current vs. Supply Voltage at Different Temperatures
–100
–200
–300
–400
–500
–600
–100
–150
–200
–250
–300
–350
Figure 19. Input Error Voltage vs. Output Voltage for Resistive Loads
600
500
400
300
200
100
800
700
600
500
400
300
200
100
250
200
150
100
–50
50
0
0
0
–15
4
0
10kΩ 1kΩ
V
SY
Figure 20. Input Error Voltage vs. Output Voltage
100kΩ
= ±13V
50
–10
OUTPUT VOLTAGE FROM SUPPLY RAIL (mV)
8
Within 300 mV of Supply Rails
+25°C
100
R
R
R
L
L
L
–5
12
OUTPUT VOLTAGE (V)
= 1kΩ
= 2kΩ
= 2kΩ
R
V
R
L
SY
L
= 10kΩ
= 10kΩ
150
= ± 5V
V
SY
16
0
(V)
R
L
200
+125°C
= 100kΩ
–55°C
R
L
20
= 100kΩ
5
250
R
L
= 1kΩ
POS RAIL
NEG RAIL
10
24
300
350
15
28
Rev. E | Page 8 of 16
10000
10000
1000
1000
100
100
–10
–20
–30
10
10
70
60
50
40
30
20
10
0.001
0.001
1
1
0
10k
Figure 24. Open-Loop Gain and Phase Margin vs. Frequency
Figure 22. Output Saturation Voltage vs. Load Current
Figure 23. Output Saturation Voltage vs. Load Current
V
V
SY
SY
= ± 13V
= 5V
0.01
0.01
100k
GAIN
LOAD CURRENT (mA)
LOAD CURRENT (mA)
FREQUENCY (Hz)
0.1
0.1
1M
1
1
V
V
SY
SY
– V
– V
OH
PHASE
OH
10
10
V
R
C
– V
SY
L
L
10M
Data Sheet
SY
= 2k
= 40pF
V
=
– V
OL
±
Ω
13V
OL
100
100
315
270
225
180
135
90
45
0
–45
–90
–135