參數(shù)資料
型號(hào)： MAX4462UEUT-T
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 運(yùn)動(dòng)控制電子
英文描述： Precision Instrumentation Amplifier
中文描述： INSTRUMENTATION AMPLIFIER, 1300 uV OFFSET-MAX, 2.5 MHz BAND WIDTH, PDSO6
封裝： MO-178AB, SOT23, 6 PIN
文件頁(yè)數(shù)： 14/20頁(yè)
文件大?。?/td> 439K
代理商： MAX4462UEUT-T
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)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX4464EUK 制造商:Maxim Integrated Products 功能描述:SINGLE/DUAL +1.8V/750NA SC70 RAI - Cut Tape Product
MAX4464EUK+ 制造商:Maxim Integrated Products 功能描述:OP AMP SGL GP R-R O/P 5.5V 5PIN SOT-23 - Rail/Tube
MAX4464EUK+T 功能描述:運(yùn)算放大器 - 運(yùn)放 1.8V/750nA Rail-Rail RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
MAX4464EUK-T 功能描述:運(yùn)算放大器 - 運(yùn)放 1.8V/750nA Rail-Rail RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
MAX4464EXK 制造商:Maxim Integrated Products 功能描述:SINGLE/DUAL +1.8V/750NA SC70 RAI - Cut Tape Product
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