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參數資料
型號: TLV5624CD
廠商: TEXAS INSTRUMENTS INC
元件分類: DAC
英文描述: SERIAL INPUT LOADING, 3.5 us SETTLING TIME, 8-BIT DAC, PDSO8
封裝: GREEN, PLASTIC, MS-012AA, SOIC-8
文件頁數: 5/22頁
文件大小: 571K
代理商: TLV5624CD
TLV5624
2.7V TO 5.5V LOW POWER 8BIT DIGITALTOANALOG
CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN
SLAS235B JULY 1999 REVISED APRIL 2004
13
WWW.TI.COM
APPLICATION INFORMATION
Example:
D Set DAC output, select fast mode, select internal reference at 2.048 V:
1.
Set reference voltage to 2.048 V (CONTROL register):
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
1
0
1
0
1
0
2.
Write new DAC value and update DAC output:
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
New DAC output value
0
The DAC output is updated on the rising clock edge after D0 is sampled.
To output data consecutively using the same DAC configuration, it is not necessary to program the CONTROL
register again.
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, because the most negative
supply rail is ground, the output cannot drive below ground and clamps the output at 0 V.
The output voltage then remains at zero until the input code value produces a sufficient positive output voltage
to overcome the negative offset voltage, resulting in the transfer function shown in Figure 15.
DAC Code
Output
Voltage
0 V
Negative
Offset
Figure 15. 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 the ground rail.
For a DAC, linearity is measured between zero-input code (all inputs 0) and full-scale code 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 is measured
between full-scale code and the lowest code that produces a positive output voltage.
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TLV5624ID SERIAL INPUT LOADING, 3.5 us SETTLING TIME, 8-BIT DAC, PDSO8
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相關代理商/技術參數
參數描述
TLV5624CDG4 功能描述:數模轉換器- DAC 8bit DAC w/Pwr D 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
TLV5624CDGK 功能描述:數模轉換器- DAC 8-Bit 1.0-3.5us DAC Serial Out 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
TLV5624CDGKG4 功能描述:數模轉換器- DAC 8-Bit 1.0-3.5us DAC Serial Out 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
TLV5624CDGKR 功能描述:數模轉換器- DAC 8-Bit 1.0-3.5us DAC Serial Out 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
TLV5624CDGKRG4 功能描述:數模轉換器- DAC 8-Bit 1.0-3.5us DAC Serial Out 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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