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參數(shù)資料
| 型號： | DAC312FR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | 12-Bit High Speed Multiplying D/A Converter |
| 中文描述： | PARALLEL, WORD INPUT LOADING, 0.25 us SETTLING TIME, 12-BIT DAC, CDIP20 |
| 封裝： | HREMETIC SEALED, CERDIP-20 |
| 文件頁數(shù)： | 12/14頁 |
| 文件大?。?/td> | 269K |
| 代理商： | DAC312FR |
DAC312
–12–
REV. C
One of the characteristics of an R-2R DAC in standard form is
that any transition which causes a zero LSB change (i.e., the
same output for two different codes) will exhibit the same out-
put each time that transition occurs. T he same holds true for
transitions causing a 2 LSB change. T hese two problem transi-
tions are allowable for the standard definition of monotonicity
and also allow the device to be specified very tightly for INL.
T he major problem arising from this error type is in A/D con-
verter implementations. Inputs producing the same output are
now represented by ambiguous output codes for an identical in-
put. Also, 2 LSB gaps can cause large errors at those input lev-
els (assuming 1/2 LSB quantizing levels). It can be seen from
the two figures that the DNL specified D/A converter will yield
much finer grained data than the INL specified part, thus im-
proving the ability of the A/D to resolve changes in the analog
input.
DIFFE RE NT IAL LINE ARIT Y COMPARISON
D/A Converter with
±
1/2 LSB INL,
±
1 LSB DNL
Video Deflection by DACs
ENLARGED “ POSITIONAL” OUTPUTS
D/A Converter with
±
2 LSB INL,
±
1/2 LSB DNL
Video Deflection by DACs
ENLARGED “ POSITIONAL” OUTPUTS
DIFFE RE NT IAL VS. INT E GRAL NONLINE ARIT Y
Integral nonlinearity, for the purposes of the discussion, refers
to the “straightness”of the line drawn through the individual re-
sponse points of a data converter. Differential nonlinearity, on
the other hand, refers to the deviation of the spacing of the adja-
cent points from a 1 LSB ideal spacing. Both may be expressed
as either a percentage of full-scale output or as fractional LSBs
or both. T he following figures define the manner in which these
parameters are specified. T he left figure shows a portion of the
transfer curve of a DAC with 1/2 LSB INL and the (implied)
DNL spec of 1 LSB. Below this is a graphic representation of
the way this would appear on a CRT , for example, if the D/A
converter output were to be applied to the Y input of a CRT as
shown in the application schematic titled “CRT Display Drive.”
On the right is a portion of the transfer curve of a DAC speci-
fied for 2 LSB INL with 1/2 LSB DNL specified and the
graphic display below it.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DAC312GBC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:12-Bit Digital-to-Analog Converter |
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| DAC312HPZ | 功能描述:IC DAC 12BIT HS MULT 20-DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 設置時間:4µs 位數(shù):12 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:8-uMAX 包裝:管件 輸出數(shù)目和類型:2 電壓，單極 采樣率（每秒）:* 產(chǎn)品目錄頁面:1398 (CN2011-ZH PDF) |
| DAC312HR | 制造商:PMI 功能描述: |
| DAC312HS | 功能描述:IC DAC 12BIT MULTIPLY HS 20-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標準包裝:47 系列:- 設置時間:2µs 位數(shù):14 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:55µW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:管件 輸出數(shù)目和類型:1 電流，單極；1 電流，雙極 采樣率（每秒）:* |
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