參數(shù)資料
型號： MCP4726A3T-E/CH
廠商： Microchip Technology
文件頁數(shù)： 57/86頁
文件大?。?/td> 0K
描述： IC DAC 12BIT NV EEP I2C SOT-23-6
標準包裝： 3,000
設(shè)置時間： 6µs
位數(shù)： 12
數(shù)據(jù)接口： EEPROM，I²C，串行
轉(zhuǎn)換器數(shù)目： 1
電壓電源： 單電源
功率耗散（最大）： 452mW
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： SOT-23-6
供應(yīng)商設(shè)備封裝： SOT-23-6
包裝： 帶卷 (TR)
輸出數(shù)目和類型： 1 電壓，單極
采樣率（每秒）： *
MCP4706/4716/4726
DS22272C-page 60
2011-2012 Microchip Technology Inc.
7.7
Integral Nonlinearity (INL)
The Integral Nonlinearity (INL) error is the maximum
deviation of an actual transfer function from an ideal
transfer function (straight line).
In the MCP47X6, INL is calculated using two end points
(zero and full scale). INL can be expressed as a per-
centage of full scale range (FSR) or in a fraction of an
LSb. INL is also called relative accuracy. Equation 7-4
shows how to calculate the INL error in LSb and
Figure 7-2 shows an example of INL accuracy.
EQUATION 7-4:
INL ERROR
FIGURE 7-2:
INL Accuracy Example.
7.8
Differential Nonlinearity (DNL)
The Differential Nonlinearity (DNL) error (see Figure 7-3)
is the measure of step size between codes in actual
transfer function. The ideal step size between codes is
1 LSb. A DNL error of zero would imply that every code
is exactly 1 LSb wide. If the DNL error is less than 1 LSb,
the DAC ensures monotonic output and no missing
codes. The DNL error between any two adjacent codes
is calculated as follows:
EQUATION 7-5:
DNL ERROR
FIGURE 7-3:
DNL Accuracy Example.
INL
V
OUT
V
Ide al
–
()
LSb
---------------------------------------
=
Where:
INL is expressed in LSb.
VIdeal
=
Code*LSb
VOUT
=
The output voltage measured with
a given DAC input code
010
001
000
Analog
Output
(LSb)
DAC Input Code
011
111
100
101
1
2
3
4
5
6
0
7
110
Ideal Transfer Function
Actual Transfer Function
INL = < -1 LSb
INL = 0.5 LSb
INL = - 1 LSb
DNL
ΔV
OUT
LSb
–
LSb
----------------------------------
=
Where:
DNL is expressed in LSb.
ΔV
OUT
=
The measured DAC output
voltage difference between two
adjacent input codes
010
001
000
Analog
Output
(LSb)
DAC Input Code
011
111
100
101
1
2
3
4
5
6
0
7
DNL = 2 LSb
DNL = 0.5 LSb
110
Ideal Transfer Function
Actual Transfer Function
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MCP4728A2-E/UN 制造商:Microchip Technology Inc 功能描述:
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