參數(shù)資料
型號: AD705
廠商: Analog Devices, Inc.
英文描述: Picoampere Input Current Bipolar Op Amp(輸入微微安培電流雙極性運放)
中文描述: Picoampere輸入電流雙極運算放大器(輸入微微安培電流雙極性運放)
文件頁數(shù): 6/8頁
文件大?。?/td> 455K
代理商: AD705
AD705
REV. B
–6–
0.01
0.1
1
1
10
100
1000
10,000
VALUE OF OVERCOMPENSATION CAPACITOR – pF
0.001
1k
10k
100k
1M
GAIN BANDWIDTH
SLEW RATE
ADDING AN EXTERNAL
CAPACITOR BETWEEN
PIN 5 AND GROUND
INCREASES THE AMPLIFIER'S
COMPENSATION
S
G
Figure 19. Slew Rate & Gain
Bandwidth Product vs. Value of
Overcompensation Capacitor
100
90
10
0%
20μs
2V
Figure 21b. Unity Gain Follower
Large Signal Pulse Response
R
F
= 10 k
, C
L
= 50 pF
6
4
0.1μF
–V
S
7
0.1μF
+V
S
2
3
AD705
R
L
2.5k
C
L
V
OUT
V
IN
SQUARE WAVE
INPUT
10k
10k
Figure 22a. Unity Gain Inverter
1
10
100
1k
10k
100k
0.001
0.01
0.1
1
10
100
1000
FREQUENCY – Hz
C
I
OUT
= +1mA
A
V
= +1
A
V
= –1000
Figure 20. Magnitude of Closed
Loop Output Impedance vs.
Frequency
100
90
10
0%
5μs
20mV
Figure 21c. Unity Gain Follower
Small Signal Pulse Response
R
F
= 0
, C
L
= 100 pF
100
90
10
0%
2V
50μs
Figure 22b. Unity Gain Inverter
Large Signal Pulse Response
C
L
= 50 pF
6
4
0.1μF
–V
S
7
0.1μF
+V
S
2
3
AD705
R
L
2k
C
L
R
F
V
OUT
V
IN
SQUARE WAVE
INPUT
Figure 21a. Unity Gain Follower
(For Large Signal Applications,
Resistor R
F
Limits the Current
Through the Input Protection
Diodes)
100
90
10
0%
5μs
20mV
Figure 21d. Unity Gain Follower
Small Signal Pulse Response
R
F
= 0
, C
L
= 1000 pF
100
90
10
0%
5μs
20mV
Figure 22c. Unity Gain Inverter
Small Signal Pulse Response
C
L
= 100 pF
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