參數(shù)資料
型號： MAX4462
廠商： Maxim Integrated Products, Inc.
元件分類： 運動控制電子
英文描述： Precision Instrumentation Amplifier
中文描述： 精密儀表放大器
文件頁數(shù)： 14/20頁
文件大?。?/td> 439K
代理商： MAX4462
M
SOT23, 3V/5V, Single-Supply, Rail-to-Rail
Instrumentation Amplifiers
14
______________________________________________________________________________________
Looking at this curve, one can immediately identify
three types of errors.
First, there is an obvious nonlinearity (curvature) when
this transfer function is compared to a straight line.
More deviation is measured as greater nonlinearity
error. This is explained in more detail below.
Second, even if there was no nonlinearity error, i.e., the
actual curve in Figure 4 was a straight line connecting
end points A and B, there exists an obvious slope devi-
ation from that of an ideal gain slope (drawn as the
“
ideal
”
line in Figure 4). This rotational error (delta
slope) is a measure of how different the actual gain
(G
A
) is from the expected ideal gain (G
I)
and is called
gain error (GE) (see the equation below).
Third, even if the actual curve between points A and B
was a straight line (no nonlinearity error) and had the
same slope as the ideal gain line (no gain error), there
is still another error called the end-point offset error (OE
on vertical axis), since the line is not passing through
the origin.
Figure 5 is the same as Figure 4, but the ideal line (CD)
is shifted up to pass through point E (the Y intercept of
end-points line AB).
This is done to better visualize the rotational error (GE),
which is the difference between the slopes of end
points line AB and the shifted ideal line CD.
Mathematically:
GE (%) = 100 x (G
A
- G
I
) / G
I
V
OUT
V
OUT2
V
OUT1
V
IN1
V
IN
V
IN2
IDEAL TRANSFER
FUNCTION (LINE)
0
Figure 3. Transfer Function of an Ideal Instrumentation
Amplifier (Straight Line Passing Through the Origin)
V
OUT
ACTUAL CURVE
A
E
0
B
Z
END-POINT LINE
IDEAL LINE
V
IN
Figure 4. Typical Transfer Function for a Real Instrumentation
Amplifier
V
OUT
ACTUAL CURVE
END-POINT LINE
IDEAL LINE SHIFT
NL+
NL-
C
0
E
Z
B
D
A
V
IN
SLOPE
(CD)
= IDEAL GAIN = G
I
SLOPE
(AB)
= ACTUAL GAIN = G
A
GAIN ERROR (%) = GE (%) = 100 X (G
A
- G
I
) / G
I
OFFSET
(END POINT)
= OE
NL- = NL+
Figure 5. Typical Transfer Function for a Real Instrumentation
Amplifier (Ideal Line (CD) Is Shifted by the End-Points Offset
(OE) to Visualize Gain Error)
相關(guān)PDF資料
PDF描述
MAX4462HEUT-T Precision Instrumentation Amplifier
MAX4460ESA Precision Instrumentation Amplifier
MAX4460EUT-T Precision Instrumentation Amplifier
MAX4461TESA Precision Instrumentation Amplifier
MAX4461TEUT-T Precision Instrumentation Amplifier
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX4462HESA 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
MAX4462HESA+ 功能描述:儀表放大器 3V/5V Single-Supply Rail-Rail 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
MAX4462HESA+T 功能描述:儀表放大器 3V/5V Single-Supply Rail-Rail 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
MAX4462HESA-T 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
MAX4462HETT+T 功能描述:儀表放大器 3V/5V Single-Supply Rail-Rail 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
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