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参数资料
| 型号： | TLV5628IDWRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | DAC |
| 英文描述： | OCTAL, SERIAL INPUT LOADING, 10 us SETTLING TIME, 8-BIT DAC, PDSO16 |
| 封装： | GREEN, PLASTIC, SOIC-16 |
| 文件页数： | 15/18页 |
| 文件大小： | 410K |
| 代理商： | TLV5628IDWRG4 |
TLV5628C, TLV5628I
OCTAL 8-BIT DIGITAL-TO-ANALOG CONVERTERS
SLAS108A – JANUARY 1995 – REVISED NOVEMBER 1995
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
linearity, offset, and gain error
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, with a negative voltage offset, attempts to drive the output to a negative voltage. However,
since the most negative supply rail is ground, the output cannot drive to a negative voltage.
So when the output offset voltage is negative, the output voltage remains at 0 volts 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)
The negative offset error produces a breakpoint, not a linearity error. The transfer function would follow the
dotted line if the output buffer could drive to a negative voltage.
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. 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 negative offset.
equivalent inputs and outputs
GND
Vref
Input
VDD
To DAC
Resistor
String
_
+
VDD
DAC
Voltage Output
ISINK
60
A
Typical
84 k
84 k
× 1
× 2
Output
Range
Select
Input from
Decoded DAC
Register String
INPUT CIRCUIT
OUTPUT CIRCUIT
GND
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相关代理商/技术参数 |
参数描述 |
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| TLV5628IN | 功能描述:数模转换器- DAC Octal 8bit D/A RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| TLV5628INE4 | 功能描述:数模转换器- DAC 8-Bit 10 us Octal DAC Serial Input RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| TLV5629 | 制造商:TI 制造商全称:Texas Instruments 功能描述:8-CHANNEL, 12-/10-/8-BIT, 2.7-V TO 5.5-V LOW POWER DIGITAL-TO-ANALOG CONVERTER WITH POWER DOWN |
| TLV5629IDW | 功能描述:数模转换器- DAC 8bit 8Chl DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| TLV5629IDW | 制造商:Texas Instruments 功能描述:Digital/Analog Converter IC Interface Ty |
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