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AD5254BRU50-RL7 PDF预览

AD5254BRU50-RL7

更新时间： 2024-01-26 23:03:24
品牌 Logo 应用领域
亚德诺 - ADI 转换器电位器数字电位计存储电阻器光电二极管
页数 文件大小 规格书
28页 1160K
描述
Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers

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中文翻译

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AD5254BRU50-RL7 技术参数

Source Url Status Check Date：2013-05-01 14:56:11.245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-153AC, TSSOP-20
针数：20Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.35Is Samacsys：N
其他特性：NONVOLATILE MEMORY; DEVICE SUPPORTS DUAL SUPPLY OPERATION标称带宽：0.08 kHz
控制接口：2-WIRE SERIAL转换器类型：DIGITAL POTENTIOMETER
JESD-30 代码：R-PDSO-G20JESD-609代码：e0
长度：6.5 mm湿度敏感等级：1
标称负供电电压：-2.5 V功能数量：4
位置数：256端子数量：20
最高工作温度：85 °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：TSSOP20,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：240
电源：3/5 V认证状态：Not Qualified
电阻定律：LINEAR最大电阻容差：20%
最大电阻器端电压：2.75 V最小电阻器端电压：-2.25 V
座面最大高度：1.2 mm子类别：Digital Potentiometers
标称供电电压：2.5 V表面贴装：YES
技术：CMOS标称温度系数：650 ppm/ °C
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn85Pb15)
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
标称总电阻：50000 Ω宽度：4.4 mm
Base Number Matches：1

AD5254BRU50-RL7 数据手册

 浏览型号AD5254BRU50-RL7的Datasheet PDF文件第19页浏览型号AD5254BRU50-RL7的Datasheet PDF文件第20页浏览型号AD5254BRU50-RL7的Datasheet PDF文件第21页浏览型号AD5254BRU50-RL7的Datasheet PDF文件第23页浏览型号AD5254BRU50-RL7的Datasheet PDF文件第24页浏览型号AD5254BRU50-RL7的Datasheet PDF文件第25页 
AD5253/AD5254  
V
+5V  
DD  
× 4  
R1  
AD1  
AD0  
A
2
4
N1  
2 × 4  
DECODER  
W
B
+5V  
× 4  
R2  
X
V
SS  
AD1  
AD0  
4
N2  
X
Figure 39. Maximum Terminal Voltages Set by VDD and VSS  
2 × 4  
DECODER  
+5  
POWER-UP AND POWER-DOWN SEQUENCES  
Since the ESD protection diodes limit the voltage compliance at  
terminals A, B, and W (Figure 39), it is important to power  
VDD/VSS before applying any voltage to terminals A, B, and W.  
Otherwise, the diodes are forward-biased such that VDD/VSS are  
powered unintentionally and may affect the rest of the user’s  
circuit. Similarly, VDD/VSS should be powered down last. The  
P2  
Y
P2  
Y
+5V  
4
2 × 4  
DECODER  
× 4  
ideal power-up sequence is in the following order: GND, VDD  
,
VSS, digital inputs, and VA/VB/VW. The order of powering VA, VB,  
VW, and the digital inputs is not important, as long as they are  
powered after VDD/VSS.  
P3  
AD1  
X
R3  
X
R3  
Y
Y
AD0  
N3  
LAYOUT AND POWER SUPPLY BIASING  
It is always a good practice to employ a compact, minimum  
lead-length layout design. The leads to the input should be as  
direct as possible, with a minimum conductor length. Ground  
paths should have low resistance and low inductance.  
+5V  
4
2 × 4  
DECODER  
× 4  
P4  
AD1  
AD0  
Similarly, it is also good practice to bypass the power supplies  
with quality capacitors. Low ESR (equivalent series resistance)  
1 µF to 10 µF tantalum or electrolytic capacitors should be  
applied at the supplies to minimize any transient disturbance  
and filter low frequency ripple. Figure 40 illustrates the basic  
supply-bypassing configuration for the AD5253/AD5254.  
R4  
Figure 38. Four Devices with AD1 and AD0 of 00  
TERMINAL VOLTAGE OPERATION RANGE  
AD5253/AD5254  
The AD5253/AD5254 are designed with internal ESD diodes  
for protection; these diodes also set the boundary of the  
terminal operating voltages. Positive signals present on terminal  
A, B, or W that exceed VDD are clamped by the forward biased  
diode. Similarly, negative signals on terminal A, B, or W that are  
more negative than VSS are also clamped (see Figure 39). In  
practice, users should not operate VAB, VWA, and VWB to be  
higher than the voltage across VDD-to-VSS, but VAB, VWA, and VWB  
have no polarity constraint.  
V
DD  
V
DD  
C1  
10µF  
C3  
C4  
0.1µF  
0.1µF  
C2  
10µF  
V
SS  
V
SS  
GND  
Figure 40. Power Supply Bypassing  
The ground pin of the AD5253/AD5254 is used primarily as a  
digital ground reference. To minimize the digital ground  
bounce, the AD5253/AD5254 ground terminal should be joined  
remotely to the common ground (see Figure 40).  
Rev. 0 | Page 22 of 28  
 
 
 
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中文翻译

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AD5254BRU50-RL7 替代型号

型号 品牌 替代类型 描述 数据表
AD5254BRUZ50-RL7 ADI

类似代替

 		Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers
AD5254BRUZ50 ADI

类似代替

 		Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers

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