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參數資料
| 型號： | TLC5628IDWR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | DAC |
| 英文描述： | OCTAL, SERIAL INPUT LOADING, 10 us SETTLING TIME, 8-BIT DAC, PDSO16 |
| 文件頁數： | 13/17頁 |
| 文件大小： | 407K |
| 代理商： | TLC5628IDWR |
TLC5628C, TLC5628I
OCTAL 8-BIT DIGITAL-TO-ANALOG CONVERTERS
SLAS089E – NOVEMBER 1994 – REVISED APRIL 1997
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
linearity, offset, and gain error using single-end supplies
When an amplifier is operated from a single supply, the voltage offset can still be either positive or negative. With
a positive offset voltage, 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, therefore, attempts to drive the output to a negative voltage. However, because the most
negative supply rail is ground, the output cannot drive below ground.
The output voltage remains at 0 V until the input code value produces a sufficient output voltage to overcome
the inherent negative offset voltage, resulting in the transfer function shown in Figure 5.
DAC Code
Output
Voltage
0 V
Negative
Offset
Figure 5. Effect of Negative Offset (Single Supply)
This offset error, not the linearity error, produces the 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 the zero-input code (all inputs are 0) and the full-scale code (all inputs
are 1) after offset and full scale are 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 that produces a positive
output voltage.
The code is calculated from the maximum specification for the negative offset voltage.
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| TLC5628IDWRG4 | 功能描述:數模轉換器- DAC 8Bit 10us Octal DAC Serial In Pgrmable RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| TLC5628IN | 功能描述:數模轉換器- DAC Octal 8bit D/A RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
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| TLC5733A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:20 MSPS 3-CHANNEL ANALOG-TO-DIGITAL CONVERTER WITH HIGH-PRECISION CLAMP |
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