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參數(shù)資料
| 型號(hào)： | MIC7201 |
| 廠商： | Micrel Semiconductor,Inc. |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | GainBlock Difference Amplifier(GainBlock技術(shù)差分放大器) |
| 中文描述： | GainBlock差分放大器（GainBlock技術(shù)差分放大器） |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 72K |
| 代理商： | MIC7201 |
MIC7201
Applications Information
Input Common Mode Voltage
The MIC7201 tolerates overdriving the inputs by at least
300mV beyond either rail without producing phase inversion.
If the absolute maximum input voltage is exceeded, the input
current should be limited to
±
5mA to prevent reducing reliabil-
ity. A 10k
series input resistor, used as a current limiter will
protect the input structure from voltages as large as 50V
above the supply or below ground.
Output Voltage Swing
Output resistance of the MIC7201 is symmetric; sink and
source output resistances are equal. Output voltage swing is
determined by the load and, given the approximate output
resistance, which may be readily calculated with the following
formula:
Micrel
MIC7201
6
December 1998
R
V
I
OUT
DROP
LOAD
≈
V
DROP
is the voltage dropped within the amplifier output
stage. V
DROP
and I
LOAD
can be determined from the V
OUT
(output swing) portion of the appropriate Electrical Character-
istics table. I
LOAD
is equal to the typical output high voltage
minus V+/2 and divided by R
LOAD
. For example, using the
Electrical Characteristics DC (5V) table, the typical output
voltage drop using a 2k
load (connected to V+/2) is 0.015V,
which produces an I
LOAD
of (2.5V – 0.015V) / 2k
≈
1.243mA.
Then:
R
15mV
1.243mA
1
OUT
=
=
≈
12 1
2
.
Driving Capacitive Loads
Driving a capacitive load introduces phase-lag into the output
signal, and this in turn reduces system phase margin. The
application that is least forgiving of reduced phase margin is
a unity gain amplifier. The MIC7201 typically can drive a
500pF capacitive load connected directly to its output.
V
SUPPLY
DAC
0.1μF
0.1μF
I
OUT
I
OUT
Digital
Input
0.1μF
R
L
0.1μF
V
OUT
4.7μF
MIC7201
Figure 1. Audio DAC
IN+
OUT
50k
100k
V+
50k
50k
100k
IN–
V–
MIC7201
1
2
3
4
5
V
IN
V
V+
V
V
2
OUT
IN
=
Figure 2. Gain of One-Half
IN+
OUT
50k
100k
V+
50k
50k
100k
IN–
V–
MIC7201
1
2
3
4
5
V
IN
V
V+
V
OUT
= V
IN
V
V+
2
Figure 3. Voltage Follower
IN+
OUT
50k
100k
V+
50k
50k
100k
IN–
V–
MIC7201
1
2
3
4
5
V
V+
V
OUT
= –V
IN
0.1μF
V
IN
Figure 4. Inverting Unity Gain
IN+
OUT
50k
100k
V+
50k
50k
100k
IN–
V–
MIC7201
1
2
3
4
5
V
V+
0.1μF
V
V
2
OUT
V+
=
Figure 5. Virtual Ground Generator
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參數(shù)描述 |
|---|---|
| MIC7201BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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| MIC7211BM5 | 制造商:Micrel Inc 功能描述: |
| MIC7211BM5 TR | 功能描述:IC COMPARATOR R-R INPUT SOT23-5 RoHS:否 類別:集成電路 (IC) >> 線性 - 比較器 系列:IttyBitty® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:通用 元件數(shù):1 輸出類型:CMOS，推挽式，滿擺幅，TTL 電壓 - 電源，單路/雙路(±):2.5 V ~ 5.5 V，±1.25 V ~ 2.75 V 電壓 - 輸入偏移（最小值）:5mV @ 5.5V 電流 - 輸入偏壓（最小值）:1pA @ 5.5V 電流 - 輸出（標(biāo)準(zhǔn)）:- 電流 - 靜態(tài)（最大值）:24µA CMRR, PSRR（標(biāo)準(zhǔn)）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:450ns 磁滯:±3mV 工作溫度:-40°C ~ 85°C 封裝/外殼:6-WFBGA，CSPBGA 安裝類型:表面貼裝 包裝:管件 其它名稱:Q3554586 |
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