參數(shù)資料
型號: MIC7300BMM
廠商: MICREL INC
元件分類: 運(yùn)動(dòng)控制電子
英文描述: High-Output Drive Rail-to-Rail Op Amp Preliminary Information
中文描述: OP-AMP, 9000 uV OFFSET-MAX, 0.45 MHz BAND WIDTH, PDSO8
封裝: MSOP-8
文件頁數(shù): 9/12頁
文件大?。?/td> 114K
代理商: MIC7300BMM
November 1999
9
MIC7300
MIC7300
Micrel
the phase lag caused by feedback resistor R
FB
and input
capacitance C
IN
. The value of C
FB
is determined by first
estimating C
IN
and then applying the following formula:
R
C
R
C
FB
FB
×
×
V
IN
C
FB
R
FB
V
OUT
C
IN
R
IN
Figure 2. Cancelling Feedback Phase Lag
Since a significant percentage of C
IN
may be caused by board
layout, it is important to note that the correct value of C
FB
may
change when changing from a breadboard to the final circuit
layout.
Typical Circuits
Some single-supply, rail-to-rail applications for which the
MIC7300 is well suited are shown in the circuit diagrams of
Figures 3 through 7.
R2
910k
R1
100k
V
0V to V+
V+
2.2V to 10V
V
IN
5
2
1
3
4
MIC7300
0V to V+
A
V
Figure 3a. Noninverting Amplifier
0
100
0
100
V
O
V
IN
(V)
A
1
R2
R1
V
= +
10
Figure 3b. Noninverting Amplifier Behavior
V
0V to V+
V+
2.2V to 10V
V
0V to V+
5
2
1
3
4
MIC7300
V
OUT
= V
IN
Figure 4. Voltage Follower/Buffer
V
0V to V+
V+
2.2V to 10V
V
0V to 2V
5
2
1
3
4
MIC7300
R
S
10
1
2
W
L
V
0.5V to Q1 V
CEO(sus)
I
OUT
Q1
2N3904
V
CEO
= 40V
I
C(max)
= 200mA
{
Change Q1 and R
S
for higher current
and/or different gain.
V
R
S
I
100mA/V as shown
OUT
IN
=
=
Figure 5. Voltage-Controlled Current Sink
V+
0V
R4
100k
V+
R4
100k
R3
100k
V
OUT
5
2
1
4
3
MIC7300
C1
0.001μF
R2
100k
V+
Figure 6. Square Wave Oscillator
R3
330k
R1
33k
0V
R2
330k
V+
R4
330k
C1
1μF
V
OUT
5
2
1
4
3
MIC7300
C
IN
V+
C
OUT
R
L
A
R2
R1
330k
33k
10
V
=
=
=
Figure 7. AC-Coupled Inverting Amplifier
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