Datasheet > AD5311BRTZ-500RL71

AD5311BRTZ-500RL71

更新时间： 2022-04-12 13:54:53

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
24页	429K
描述
2.5 V to 5.5 V, 120 Î¼A, 2-Wire Interface, Voltage-Output 8-/10-/12-Bit DACs

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AD5301/AD5311/AD5321

TERMINOLOGY

Gain Error

Relative Accuracy

Gain error is a measure of the span error of the DAC. It is the

deviation in slope of the actual DAC transfer characteristic from

the ideal expressed as a percentage of the full-scale range.

For the DAC, relative accuracy or integral nonlinearity (INL) is

a measure of the maximum deviation, in LSBs, from a straight

line passing through the actual endpoints of the DAC transfer

function. Typical INL vs. code plots can be seen in Figure 5 to

Figure 7.

Zero-Code Error Drift

Zero-code error drift is a measure of the change in zero-code

error with a change in temperature. It is expressed in μV/°C.

Differential Nonlinearity (DNL)

DNL is the difference between the measured change and the

ideal 1 LSB change between any two adjacent codes. A specified

differential nonlinearity of 1 LSB maximum ensures monotonic-

ity. These DACs are guaranteed monotonic by design over all

codes. Typical DNL vs. code plots can be seen in Figure 8 to

Figure 10.

Gain Error Drift

Gain error drift is a measure of the change in gain error with

changes in temperature. It is expressed in (ppm of full-scale

range)/°C.

Major Code Transition Glitch Energy

Major code transition glitch energy is the energy of the impulse

injected into the analog output when the code in the DAC register

changes state. It is normally specified as the area of the glitch in

nV-s and is measured when the digital code is changed by 1 LSB

at the major carry transition (011 . . . 11 to 100 . . . 00 or 100 . . . 00

to 011 . . . 11).

Zero-Code Error

Zero-code error is a measure of the output error when zero

code (0x00) is loaded to the DAC register. Ideally, the output

should be 0 V. The zero-code error of the AD5301/AD5311/

AD5321 is always positive because the output of the DAC

cannot go below 0 V, due to a combination of the offset errors

in the DAC and output amplifier. It is expressed in millivolts,

see Figure 12.

Digital Feedthrough

Digital feedthrough is a measure of the impulse injected into

the analog output of the DAC from the digital input pins of the

device, but is measured when the DAC is not being written to. It

is specified in nV-s and is measured with a full-scale change on

the digital input pins, that is, from all 0s to all 1s and vice versa.

Full-Scale Error (FSR)

Full-scale error is a measure of the output error when full

scale is loaded to the DAC register. Ideally, the output should

be V_DD– 1 LSB. Full-scale error is expressed in percent of FSR.

A plot can be seen in Figure 12.

Rev. B | Page 8 of 24

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