參數(shù)資料
型號(hào)： TLC7225CDWG4
廠商： TEXAS INSTRUMENTS INC
元件分類： DAC
英文描述： PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDSO24
封裝： 0.300 INCH, GREEN, SOIC-24
文件頁(yè)數(shù)： 11/22頁(yè)
文件大小： 331K
代理商： TLC7225CDWG4
TLC7225C, TLC7225I
QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS
SLAS109B – OCTOBER 1996 – REVISED FEBRUARY 2001
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
linearity, offset, and gain error using single-ended supplies
When an amplifier is operated from a single supply, the voltage offset can still be either positive or negative. With
a positive offset, the output voltage changes on the first code change. With a negative offset the output voltage
may not change with the first code depending on the magnitude of the offset voltage.
The output amplifier attempts to drive the output to a negative voltage. However, since the most negative supply
rail is ground, the output cannot drive below ground.
So with this output offset voltage, the output voltage remains at zero until the input-code value produces a
sufficient output voltage to overcome the inherent offset voltage, resulting in a transfer function shown in
Figure 18.
DAC Code
Output
Voltage
0 V
Negative
Offset
Figure 18. Effect of Negative Offset (Single Supply)
This offset error, not the linearity error, produces this breakpoint. The transfer function would have followed the
dotted line if the output buffer could drive below ground.
For a DAC, linearity is measured between zero-input code (all inputs 0) and full-scale code (all inputs 1) after
offset and full scale is adjusted out or accounted for in some way. However, single supply operation does not
allow for adjustment when the offset is negative due to the breakpoint in the transfer function. So the linearity
in the unipolar mode is measured between full-scale code and the lowest code, which produces a positive output
voltage.
The code is calculated from the maximum specification for the zero offset error.
相關(guān)PDF資料
PDF描述
TLC7226EDWR QUAD, PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDSO20
TLC7226EDW QUAD, PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDSO20
TLC7226EN QUAD, PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDIP20
TLC7524EFN PARALLEL, 8 BITS INPUT LOADING, 0.1 us SETTLING TIME, 8-BIT DAC, PQCC20
TLC7524EN PARALLEL, 8 BITS INPUT LOADING, 0.1 us SETTLING TIME, 8-BIT DAC, PDIP16
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLC7225CDWR 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit 5 us Quad DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
TLC7225CDWRG4 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit 5 us Quad DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
TLC7225I 制造商:TI 制造商全稱:Texas Instruments 功能描述:QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS
TLC7225IDW 功能描述:數(shù)模轉(zhuǎn)換器- DAC Quad DAC 8bit RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
TLC7225IDWG4 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit 5 us Quad DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
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