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參數(shù)資料
| 型號： | DS1868E-50+T&R |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 11/14頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC POT DIGITAL DUAL 50K 20-TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 接片： | 256 |
| 電阻（歐姆）： | 50k |
| 電路數(shù)： | 2 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 750 ppm/°C |
| 存儲器類型： | 易失 |
| 接口： | 3 線串口 |
| 電源電壓： | 2.7 V ~ 3.3 V，4.5 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-TSSOP |
| 包裝： | 帶卷 (TR) |
DS1868
6 of 14
ABSOLUTE AND RELATIVE LINEARITY
Absolute linearity is defined as the difference between the actual measured output voltage and the
expected output voltage. Figure 5 presents the test circuit used to measure absolute linearity. Absolute
linearity is given in terms of a minimum increment or expected output when the wiper is moved one
position. In the case of the test circuit, a minimum increment (MI) or one LSB would equal 5/256 volts.
The equation for absolute linearity is given as follows:
(1)
ABSOLUTE LINEARITY
AL={VO(actual) - VO(expected)}/MI
Relative linearity is a measure of error between two adjacent wiper position points and is given in terms
of MI by equation (2).
(2)
RELATIVE LINEARITY
RL={VO(n+1) - VO(n)}/MI
Figure 6 is a plot of absolute linearity and relative linearity versus wiper position for the DS1868 at 25
°C.
The specification for absolute linearity of the DS1868 is
±0.75 MI typical. The specification for relative
linearity of the DS1868 is
±0.3 MI typical.
LINEARITY MEASUREMENT CONFIGURATION Figure 5
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