Datasheet 搜索 > DA转换器 > TI（德州仪器） > DAC128S085CIMT 数据手册 > DAC128S085CIMT 数据手册 16/35 页
器件3D模型￥ 11.548
DAC128S085CIMT 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
DA转换器
封装:
TSSOP-16
描述:
TEXAS INSTRUMENTS DAC128S085CIMT 数模转换器, 12 bit, 串行, 2.7V 至 5.5V, TSSOP, 16 引脚
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P4Hot
典型应用电路图在P22P23
原理图在P1P15P16
封装尺寸在P27P29P30P32
焊盘布局在P33
标记信息在P27
封装信息在P26P27P28P29P30
技术参数、封装参数在P5
应用领域在P1P35
电气规格在P5P6P7P8P9P17
导航目录
DAC128S085CIMT数据手册
Page:
of 35 Go
若手册格式错乱，请下载阅览PDF原文件
V
OUT
12 BIT DAC
REF
12
BUFFER
DAC
REGISTER
V
REF
V
REF
VOUT
R
R
R
R
R
S
0
S
1
S
2
S
2
n
S
2
n-1
S
2
n-2
DAC128S085
SNAS407H –AUGUST 2007–REVISED APRIL 2015
www.ti.com
8.3 Feature Description
8.3.1 DAC Architecture
For simplicity, a single resistor string is shown in Figure 26. This string consists of 4096 equal valued resistors
with a switch at each junction of two resistors, plus a switch to ground. The code loaded into the DAC register
determines which switch is closed, connecting the proper node to the amplifier. The input coding is straight
binary with an ideal output voltage of:
V
OUTA,B,C,D
= V
REF1
× (D / 4096)
where
• D is the decimal equivalent of the binary code that is loaded into the DAC register. (1)
V
OUTE,F,G,H
= V
REF2
× (D / 4096) (2)
D can take on any value between 0 and 4095. This configuration ensures that the DAC is monotonic.
Figure 26. DAC Resistor String
Because all eight DAC channels of the DAC128S085 can be controlled independently, each channel consists of
a DAC register and a 12-bit DAC. Figure 27 is a simple block diagram of an individual channel in the
DAC128S085. Depending on the mode of operation, data written into a DAC register causes the 12-bit DAC
output to be updated, or an additional command is required to update the DAC output. Further description of the
modes of operation can be found in Serial Interface.
Figure 27. Single-Channel Block Diagram
16 Submit Documentation Feedback Copyright © 2007–2015, Texas Instruments Incorporated
Product Folder Links: DAC128S085
器件 Datasheet 文档搜索
AiEMA 数据库涵盖高达 72,405,303 个元件的数据手册，每天更新 5,000 多个 PDF 文件
