参数资料
型号: DAC8531E/2K5
厂商: Texas Instruments
文件页数: 3/27页
文件大小: 0K
描述: IC D/A CONV LP 16-BIT 8-MSOP
产品培训模块: Data Converter Basics
标准包装: 2,500
设置时间: 8µs
位数: 16
数据接口: 串行
转换器数目: 1
电压电源: 单电源
功率耗散(最大): 720µW
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-MSOP
包装: 带卷 (TR)
输出数目和类型: 1 电压,单极;1 电压,双极
采样率(每秒): 93k
配用: 296-13548-ND - EVAL MOD FOR DAC8531
DAC8531
11
SBAS192B
www.ti.com
THEORY OF OPERATION
DAC SECTION
The architecture consists of a string DAC followed by an
output buffer amplifier. Figure 1 shows a block diagram of the
DAC architecture.
CODE CHANGE GLITCH
Time (2
s/div)
V
OUT
(20mV/div)
Glitch Waveform (20mV/div)
TYPICAL CHARACTERISTICS: VDD = 2.7V (Cont.)
At TA = +25°C, VDD = 2.7V, unless otherwise noted.
RESISTOR STRING
Figure 2 shows the resistor string section. 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 be fed into the output amplifier by closing one
of the switches connecting the string to the amplifier. It is
ensured monotonic because it is a string of resistors.
FIGURE 1. DAC8531 Architecture.
The input coding to the DAC8531 is straight binary, so the
ideal output voltage is given by:
VV
D
OUT
REF
=
65536
where D = decimal equivalent of the binary code that is
loaded to the DAC register; it can range from 0 to 65535.
FIGURE 2. Resistor String.
DAC Register
REF (+)
Resistor String
REF(–)
Output
Amplifier
GND
V
DD
V
OUT
V
FB
To Output
Amplifier
R
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DAC8531IDRB 制造商:Texas Instruments 功能描述:
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