參數(shù)資料
型號(hào): AD8067
廠商: Analog Devices, Inc.
英文描述: High Gain Bandwidth Product Precision Fast FET⑩ Op Amp
中文描述: 高增益帶寬積精密高速運(yùn)算放大器場(chǎng)效應(yīng)⑩
文件頁數(shù): 23/24頁
文件大小: 873K
代理商: AD8067
AD8067
Rev. 0 | Page 23 of 24
AD8067
C2
0.1
μ
F
1
C1
10
μ
F
+5V
–5V
5
2
4
3
AD8009
C8
0.1
μ
F
6
C7
10
μ
F
+5V
7
2
3
4
C11
0.1
μ
F
C9
10
μ
F
–5V
C4
0.1
μ
F
C3
10
μ
F
INPUT
R4
200
R3
21.5
OUTPUT
R5
50
R1
51.1
R2
4.99k
C6
0.001
μ
F
C10
0.001
μ
F
C5
5pF
M 25ns CH1 0V
CH1
1V
T
C1 AMPL
4V
Figure 59. Large Signal Response
Figure 57. AD8067/AD8009 Composite Amplifier A
V
= 100, GBWP = 6.1 GHz
M 25ns CH1 0V
C1 AMPL
480mV
CH1
200mV
T
The composite amplifier is set for a gain of 100. The overall gain is
set by the following equation:
1
1
2
+
=
R
R
V
V
I
O
The output stage is set for a gain of +10; therefore, the AD8067 has
an effective gain of +10, thereby allowing it to a maintain
bandwidth in excess of 55 MHz.
The circuit can be tailored for different gain values; keeping the
ratios roughly the same will ensure that the bandwidth integrity is
maintained. Depending on the board layout, capacitor C5 may be
required to reduce ringing on the output. The gain bandwidth and
pulse responses are shown in Figure 58, Figure 59, and Figure 60.
Figure 60. Small Signal Response
Layout of this circuit requires attention to the routing and length of
the feedback path. It should be kept as short as possible to
minimize stray capacitance.
FREQUENCY – MHz
d
44
24
26
28
30
32
34
36
38
40
42
0.1
1
10
100
Figure 58. Gain Bandwidth Response
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