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AD5302BRM-REEL7

更新时间： 2024-02-13 14:54:32
品牌 Logo 应用领域
罗彻斯特 - ROCHESTER 输入元件光电二极管转换器
页数 文件大小 规格书
25页 1926K
描述
SERIAL INPUT LOADING, 6 us SETTLING TIME, 8-BIT DAC, PDSO10, MO-187BA, MSOP-10

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AD5302BRM-REEL7 技术参数

Source Url Status Check Date：2013-05-01 14:56:11.758是否无铅： 含铅
是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：TSSOP包装说明：MO-187BA, MSOP-10
针数：10Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：7.54最大模拟输出电压：5.499 V
最小模拟输出电压：0.001 V转换器类型：D/A CONVERTER
输入位码：BINARY输入格式：SERIAL
JESD-30 代码：S-PDSO-G10JESD-609代码：e0
长度：3 mm最大线性误差 (EL)：0.1953%
湿度敏感等级：1位数：8
功能数量：1端子数量：10
最高工作温度：105 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装等效代码：TSOP10,.5封装形状：SQUARE
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：240
电源：2.5/5.5 V认证状态：Not Qualified
座面最大高度：1.1 mm标称安定时间 (tstl)：6 µs
子类别：Other Converters最大压摆率：0.4 mA
标称供电电压：3 V表面贴装：YES
技术：CMOS温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn85Pb15)端子形式：GULL WING
端子节距：0.5 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：3 mm
Base Number Matches：1

AD5302BRM-REEL7 数据手册

 浏览型号AD5302BRM-REEL7的Datasheet PDF文件第18页浏览型号AD5302BRM-REEL7的Datasheet PDF文件第19页浏览型号AD5302BRM-REEL7的Datasheet PDF文件第20页浏览型号AD5302BRM-REEL7的Datasheet PDF文件第22页浏览型号AD5302BRM-REEL7的Datasheet PDF文件第23页浏览型号AD5302BRM-REEL7的Datasheet PDF文件第24页 
AD5302/AD5312/AD5322  
POWER SUPPꢀY BYPASSING AND GROUNDING  
COARSE AND FINE ADJUSTMENT USING THE  
AD5302/AD5312/AD5322  
In any circuit where accuracy is important, careful considera-  
tion of the power supply and ground return layout helps to  
ensure the rated performance. The printed circuit board on  
which the AD5302/AD5312/AD5322 is mounted should be  
designed so that the analog and digital sections are separated  
and confined to certain areas of the board. If the AD5302/  
AD5312/AD5322 are in a system where multiple devices require  
an AGND-to-DGND connection, the connection should be  
made at one point only. The star ground point should be  
established as close as possible to the AD5302/AD5312/  
AD5322. The part should have ample supply bypassing of 10 μF  
in parallel with 0.1 μF on the supply located as close as possible  
to the package, ideally right up against the device. The 10 μF  
capacitors are the tantalum bead type. The 0.1 μF capacitor  
should have low effective series resistance (ESR) and effective  
series inductance (ESI), similar to the common ceramic types  
that provide a low impedance path to ground at high frequencies  
that handle transient currents due to internal logic switching.  
The DACs in the AD5302/AD5312/AD5322 can be paired  
together to form a coarse and fine adjustment function, as  
shown in Figure 44. DAC A is used to provide the coarse  
adjustment while DAC B provides the fine adjustment. Varying  
the ratio of R1 and R2 changes the relative effect of the coarse  
and fine adjustments. With the resistor values and external  
reference shown, the output amplifier has unity gain for the  
DAC A output, so the output range is 0 V to 2.5 V − 1 LSB. For  
DAC B, the amplifier has a gain of 7.6 × 10–3, giving DAC B a  
range equal to 19 mV.  
The circuit is shown with a 2.5 V reference, but reference  
voltages up to VDD can be used. The op amps indicated allow a  
rail-to-rail output swing.  
V
= 5V  
DD  
R3  
R4  
51.2kΩ  
900Ω  
+5V  
0.1µF  
1µF  
10µF  
V
IN  
The power supply lines of the AD5302/AD5312/AD5322  
should use as large a trace as possible to provide low impedance  
paths and reduce the effects of glitches on the power supply line.  
Fast switching signals such as clocks should be shielded with  
digital ground to avoid radiating noise to other parts of the board,  
and should never be run near the reference inputs. Avoid crossover  
of digital and analog signals. Traces on opposite sides of the  
board should run at right angles to each other. This reduces the  
effects of feedthrough through the board. A microstrip technique  
is by far the best, but is not always possible with a double-sided  
board. In this technique, the component side of the board is dedi-  
cated to ground while signal traces are placed on the solder side.  
EXT  
REF  
V
DD  
V
OUT  
R1  
V
OUT  
V
A
V
A
REF  
OUT  
AD820/  
OP295  
390Ω  
GND  
AD5302/AD5312/  
AD5322  
R2  
V
B
V
B
OUT  
REF  
51.2kΩ  
GND  
Figure 44. Coarse/Fine Adjustment  
Rev. D | Page 20 of 24  
 
 
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