FB and input capacitance C
參數(shù)資料
型號: MIC7300YM5 TR
廠商: Micrel Inc
文件頁數(shù): 12/12頁
文件大?。?/td> 0K
描述: IC OP AMP R-R IN/OUT SOT23-5
標準包裝: 1
系列: IttyBitty®
放大器類型: 通用
電路數(shù): 1
輸出類型: 滿擺幅
轉(zhuǎn)換速率: 0.5 V/µs
增益帶寬積: 370kHz
電流 - 輸入偏壓: 0.5pA
電壓 - 輸入偏移: 1000µV
電流 - 電源: 1.5mA
電流 - 輸出 / 通道: 115mA
電壓 - 電源,單路/雙路(±): 2.2 V ~ 10 V,±1.1 V ~ 5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: SC-74A,SOT-753
供應(yīng)商設(shè)備封裝: SOT-23-5
包裝: 標準包裝
產(chǎn)品目錄頁面: 1111 (CN2011-ZH PDF)
其它名稱: 576-1319-6
June 2005
9
MIC7300
Micrel
the phase lag caused by feedback resistor R
FB and input
capacitance C
IN. The value of CFB is determined by first
estimating C
IN and then applying the following formula:
R
C
R
C
IN
FB
×≤
×
VIN
CFB
RFB
VOUT
CIN
RIN
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
VOUT
0V to V+
V+
2.2V to 10V
VIN
5
2
1
3
4
MIC7300
0V to
V+
AV
Figure 3a. Noninverting Amplifier
0
100
0
100
V
OUT
(V)
V
IN (V)
V+
A1
R2
R1
V =+
≈ 10
Figure 3b. Noninverting Amplifier Behavior
VOUT
0V to V+
V+
2.2V to 10V
VIN
0V to V+
5
2
1
3
4
MIC7300
VOUT = VIN
Figure 4. Voltage Follower/Buffer
VOUT
0V to V+
V+
2.2V to 10V
VIN
0V to 2V
5
2
1
3
4
MIC7300
RS
10
12W
Load
VS
0.5V to Q1 VCEO(sus)
IOUT
Q1
2N3904
VCEO = 40V
IC(max) = 200mA
{
Change Q1 and RS
for higher current
and/or different gain.
I
V
R
100mA/V as shown
OUT
IN
S
==
Figure 5. Voltage-Controlled Current Sink
V+
0V
R4
100k
R4
100k
R3
100k
VOUT
V+
5
2
1
4
3
MIC7300
C1
0.001F
R2
100k
V+
Figure 6. Square Wave Oscillator
R3
330k
R1
33k
0V
R2
330k
R4
330k
C1
1F
VOUT
V+
5
2
1
4
3
MIC7300
CIN
V+
COUT
RL
A
R2
R1
330k
33k
10
V =
=
=
Figure 7. AC-Coupled Inverting Amplifier
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