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参数资料
| 型号： | DAC5311IDCKRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | DAC |
| 英文描述： | SERIAL INPUT LOADING, 12 us SETTLING TIME, 8-BIT DAC, PDSO6 |
| 封装： | GREEN, PLASTIC, SC-70, 6 PIN |
| 文件页数： | 20/42页 |
| 文件大小： | 2283K |
| 代理商： | DAC5311IDCKRG4 |
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THEORY OF OPERATION
DAC SECTION
REF(+)
ResistorString
DACRegister
GND
Output
Amplifier
V
OUT
AV
DD
V
OUT + AVDD
D
2n
V
REF
R
ToOutput
Amplifier
R
DIVIDER
V
2
REF
OUTPUT AMPLIFIER
RESISTOR STRING
www.ti.com ................................................................................................................................................................................................ SBAS442 – AUGUST 2008
The
DAC5311,
DAC6311,
and
DAC7311
are
fabricated using TI's proprietary HPA07 process
technology. The architecture consists of a string DAC
followed by an output buffer amplifier. Because there
is no reference input pin, the power supply (AVDD)
acts as the reference. Figure 110 shows a block
diagram of the DAC architecture.
Figure 110. DACx311 Architecture
The input coding to the DACx311 is straight binary,
so the ideal output voltage is given by:
Where:
n = resolution in bits; either 8 (DAC5311), 10
(DAC6311), or 12 (DAC7311).
D = decimal equivalent of the binary code that is
Figure 111. Resistor String
loaded to the DAC register. It ranges from 0 to
255 for 8-bit DAC5311; from 0 to 1023 for the
10-bit DAC6311; and 0 to 4095 for the 12-bit
DAC7311.
The output buffer amplifier is capable of generating
rail-to-rail voltages on its output which gives an output
range of 0V to AVDD. It is capable of driving a load of
The resistor string section is shown in Figure 111. It
2k
in parallel with 1000pF to GND. The source and
is simply a string of resistors, each of value R. The
sink capabilities of the output amplifier can be seen in
code loaded into the DAC register determines at
the Typical Characteristics section for the given
which node on the string the voltage is tapped off to
voltage input. The slew rate is 0.7V/
s with a
be fed into the output amplifier by closing one of the
half-scale settling time of typically 6
s with the output
switches connecting the string to the amplifier. It is
unloaded.
tested monotonic because it is a string of resistors.
Copyright 2008, Texas Instruments Incorporated
27
Product Folder Link(s): DAC5311 DAC6311 DAC7311
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相关代理商/技术参数 |
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| DAC5311IDCKRQ1 | 功能描述:数模转换器- DAC Auto Cat 8B Sgl Ch 80uA 1.8-5.5V 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 |
| DAC5311IDCKT | 功能描述:数模转换器- DAC 8B Sgl Ch 80uA 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 |
| DAC5311IDCKT | 制造商:Texas Instruments 功能描述:; Leaded Process Compatible:Yes; Peak Re 制造商:Texas Instruments 功能描述:IC, DAC, 8BIT, 225KSPS, SC-70-6 |
| DAC5311IDCKTG4 | 功能描述:数模转换器- DAC 8B Sgl Ch DAC w/SPI 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 |
| DAC5311-Q1 | 制造商:TI 制造商全称:Texas Instruments 功能描述:1.8 V to 5.5 V, 80 mA, 8 BIT, LOW POWER, SINGLE CHANNEL, DIGITAL-TO-ANALOG CONVERTER |
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