參數(shù)資料
型號: MAX4195ESA
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 運動控制電子
英文描述: Single Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier
中文描述: INSTRUMENTATION AMPLIFIER, 690 uV OFFSET-MAX, 0.22 MHz BAND WIDTH, PDSO8
封裝: 0.150 INCH, SOIC-8
文件頁數(shù): 11/12頁
文件大小: 213K
代理商: MAX4195ESA
M
Mic ropower, S ingle-S upply, Rail-to-Rail,
Prec ision Instrumentation Amplifiers
______________________________________________________________________________________
11
Power-S upply Bypassing and Layout
Good layout technique optimizes performance by
decreasing the amount of stray capacitance at the
instrumentation amplifier’s gain-setting pins. Excess
capacitance will produce peaking in the amplifier’s fre-
quency response. To decrease stray capacitance, min-
imize trace lengths by placing external components as
close to the instrumentation amplifier as possible. For
best performance, bypass each power supply to
ground with a separate 0.1μF capacitor.
T ransduc er Applic ations
The MAX4194–MAX4197 instrumentation amplifiers can
be used in various signal-conditioning circuits for ther-
mocouples, PT100s, strain gauges (displacement sen-
sors), piezoresistive transducers (PRTs), flow sensors,
and bioelectrical applications. Figure 7 shows a simpli-
fied example of how to attach four strain gauges (two
identical two-element strain gauges) to the inputs of the
MAX4194. The bridge contains four resistors, two of
which increase and two of which decrease by the same
ratio.
With a fully balanced bridge, points A (IN+) and B (IN-)
see half the excitation voltage (V
BRIDGE
). The low
impedance (120
to 350
) of the strain gauges, how-
ever, could cause significant voltage drop contributions
by the wires leading to the bridge, which would cause
excitation variations. Output voltage V
OUT
can be cal-
culated as follows:
V
OUT
= V
AB
·
G
where G = (1 + 50k
/ R
G
) is the gain of the instrumen-
tation amplifier.
Since V
AB
is directly proportional to the excitation, gain
errors may occur.
Figure 7. Strain Gauge Connection to the MAX4194
IN-
V
EE
V
CC
V
AB
= V
IN+
- V
IN-
V
BRIDGE
R
R
R
R
R
G
IN+
RG+
RG-
OUT
REFERENCE
μ
P
REF
B
A
MAX144
ADC
R = 120
- 350
___________________Chip Information
TRANSISTOR COUNT: 432
相關(guān)PDF資料
PDF描述
MAX4196 Single Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier
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MAX4197 Single Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX4195ESA+ 功能描述:儀表放大器 uPower Single-Supply Rail-Rail Precision RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比(最小值):88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk
MAX4195ESA+T 功能描述:儀表放大器 uPower Single-Supply Rail-Rail Precision RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比(最小值):88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk
MAX4195ESA-T 功能描述:儀表放大器 uPower Single-Supply Rail-Rail Precision RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比(最小值):88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk
MAX4196 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Micropower, Single-Supply, Rail-to-Rail, Precision Instrumentation Amplifiers
MAX4196ESA 功能描述:儀表放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比(最小值):88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk