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参数资料
| 型号： | DAC8564IAPWG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | DAC |
| 英文描述： | SERIAL INPUT LOADING, 12 us SETTLING TIME, 16-BIT DAC, PDSO16 |
| 封装： | GREEN, PLASTIC, TSSOP-16 |
| 文件页数： | 20/51页 |
| 文件大小： | 1549K |
| 代理商： | DAC8564IAPWG4 |
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DAC
Register
REF(+)
ResistorString
REF( )
-
V
L
REF
V
H
REF
V
OUTX
62kW
50kW
V
OUTX + 2
V
REFL
) (VREFH * VREFL)
D
IN
65536
V
REF
R
V
REF
2
R
DIVIDER
ToOutputAmplifier
(2xGain)
SBAS403D
– JUNE 2007 – REVISED MAY 2011
THEORY OF OPERATION
DIGITAL-TO-ANALOG CONVERTER (DAC)
The DAC8564 architecture consists of a string DAC
followed by an output buffer amplifier. Figure 92
shows a block diagram of the DAC architecture.
Figure 92. DAC8564 Architecture
The input coding to the DAC8564 is straight binary,
so the ideal output voltage is given by Equation 1.
(1)
where DIN = decimal equivalent of the binary code
that is loaded to the DAC register; it can range from 0
to 65535. X represents channel A, B, C, or D.
RESISTOR STRING
The resistor string section is shown in Figure 93. It is
simply a string of resistors, each of value R. The
code loaded into the DAC register determines at
which node on the string the voltage is tapped off to
Figure 93. Resistor String
be fed into the output amplifier by closing one of the
switches connecting the string to the amplifier. It is
monotonic because it is a string of resistors.
OUTPUT AMPLIFIER
The output buffer amplifier is capable of generating
rail-to-rail voltages on its output, giving an output
range of 0V to AVDD. It is capable of driving a load of
2k
in parallel with 1000pF to GND. The source and
sink capabilities of the output amplifier can be seen in
the Typical Characteristics. The slew rate is 2.2V/
μs,
with a full-scale settling time of 8
μs with the output
unloaded.
Copyright
2007–2011, Texas Instruments Incorporated
27
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相关代理商/技术参数 |
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|---|---|
| DAC8564IAPWR | 功能描述:数模转换器- DAC 16B Quad Ch Ultra-Lo Glitch Vltg Output 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 |
| DAC8564IAPWRG4 | 功能描述:数模转换器- DAC 16B vOut DAC quad chan Ultra Lo glitch 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 |
| DAC8564IBPW | 功能描述:数模转换器- DAC 16B Quad Ch Ultra-Lo Glitch Vltg Output 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 |
| DAC8564IBPWG4 | 功能描述:数模转换器- DAC 16B vOut DAC quad chan Ultra Lo glitch 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 |
| DAC8564IBPWR | 功能描述:数模转换器- DAC 16B Quad Ch Ultra-Lo Glitch Vltg Output 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 |
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