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AD5160BRJ5-R2

更新时间： 2024-01-14 07:03:24
品牌 Logo 应用领域
亚德诺 - ADI 数字电位计
页数 文件大小 规格书
16页 775K
描述
256-Position SPI Compatible Digital Potentiometer

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中文翻译

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AD5160BRJ5-R2 技术参数

是否无铅： 不含铅是否Rohs认证： 不符合
生命周期：Obsolete零件包装代码：SOIC
包装说明：LSSOP, TSSOP8,.1针数：8
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.32
其他特性：IT CAN ALSO OPERATE FROM A 5V NOMINAL SUPPLY标称带宽：1.2 kHz
控制接口：3-WIRE SERIAL转换器类型：DIGITAL POTENTIOMETER
JESD-30 代码：R-PDSO-G8JESD-609代码：e0
长度：2.9 mm湿度敏感等级：1
功能数量：1位置数：256
端子数量：8最高工作温度：125 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：LSSOP封装等效代码：TSSOP8,.1
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：NOT SPECIFIED电源：3/5 V
认证状态：Not Qualified电阻定律：LINEAR
最大电阻容差：30%最大电阻器端电压：3 V
最小电阻器端电压：座面最大高度：1.45 mm
子类别：Digital Potentiometers标称供电电压：3 V
表面贴装：YES标称温度系数：45 ppm/ °C
温度等级：AUTOMOTIVE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：NOT SPECIFIED
标称总电阻：5000 Ω宽度：1.6 mm
Base Number Matches：1

AD5160BRJ5-R2 数据手册

 浏览型号AD5160BRJ5-R2的Datasheet PDF文件第9页浏览型号AD5160BRJ5-R2的Datasheet PDF文件第10页浏览型号AD5160BRJ5-R2的Datasheet PDF文件第11页浏览型号AD5160BRJ5-R2的Datasheet PDF文件第13页浏览型号AD5160BRJ5-R2的Datasheet PDF文件第14页浏览型号AD5160BRJ5-R2的Datasheet PDF文件第15页 
AD5160  
OPERATION  
The AD5160 is a 256-position digitally controlled variable  
resistor (VR) device.  
The general equation determining the digitally programmed  
output resistance between W and B is  
An internal power-on preset places the wiper at midscale  
during power-on, which simplifies the fault condition recovery  
at power-up.  
D
256  
RWB (D) =  
×RAB +RW  
(1)  
where D is the decimal equivalent of the binary code loaded in  
the 8-bit RDAC register, RAB is the end-to-end resistance, and  
RW is the wiper resistance contributed by the on resistance of  
the internal switch.  
PROGRAMMING THE VARIABLE RESISTOR  
Rheostat Operation  
The nominal resistance of the RDAC between terminals A and  
B is available in 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ. The final two  
or three digits of the part number determine the nominal  
resistance value, e.g., 10 kΩ = 10ꢀ 50 kΩ = 50. The nominal  
resistance (RAB) of the VR has 256 contact points accessed by  
the wiper terminal, plus the B terminal contact. The 8-bit data  
in the RDAC latch is decoded to select one of the 256 possible  
settings. Assume a 10 kΩ part is used, the wiper’s first  
connection starts at the B terminal for data 0x00. Since there is a  
60 Ω wiper contact resistance, such connection yields a  
minimum of 60 Ω resistance between terminals W and B. The  
second connection is the first tap point, which corresponds to  
99 Ω (RWB = RAB/256 + RW = 39 Ω + 60 Ω) for data 0x01.  
The third connection is the next tap point, representing 177 Ω  
(2 × 39 Ω + 60 Ω) for data 0x02, and so on. Each LSB data value  
increase moves the wiper up the resistor ladder until the last tap  
point is reached at 9961 Ω (RAB – 1 LSB + RW). Figure 38 shows  
a simplified diagram of the equivalent RDAC circuit where the  
last resistor string will not be accessedꢀ therefore, there is 1 LSB  
less of the nominal resistance at full scale in addition to the  
wiper resistance.  
In summary, if RAB = 10 kΩ and the A terminal is open  
circuited, the following output resistance RWB will be set for the  
indicated RDAC latch codes.  
Table 6. Codes and Corresponding RWB Resistance  
D (Dec.)  
RWB (Ω)  
9,961  
5,060  
99  
Output State  
255  
128  
1
Full Scale (RAB – 1 LSB + RW)  
Midscale  
1 LSB  
0
60  
Zero Scale (Wiper Contact Resistance)  
Note that in the zero-scale condition a finite wiper resistance of  
60 Ω is present. Care should be taken to limit the current flow  
between W and B in this state to a maximum pulse current of  
no more than 20 mA. Otherwise, degradation or possible  
destruction of the internal switch contact can occur.  
Similar to the mechanical potentiometer, the resistance of the  
RDAC between the wiper W and terminal A also produces a  
digitally controlled complementary resistance RWA. When these  
terminals are used, the B terminal can be opened. Setting the  
resistance value for RWA starts at a maximum value of resistance  
and decreases as the data loaded in the latch increases in value.  
The general equation for this operation is  
A
RS  
D7  
D6  
256 − D  
256  
RS  
RWA (D) =  
×RAB + RW  
(2)  
D5  
D4  
D3  
D2  
RS  
D1  
For RAB = 10 kΩ and the B terminal open circuited, the  
following output resistance RWA will be set for the indicated  
RDAC latch codes.  
D0  
W
RDAC  
Table 7. Codes and Corresponding RWA Resistance  
LATCH  
RS  
AND  
B
D (Dec.)  
RWA (Ω)  
Output State  
Full Scale  
Midscale  
1 LSB  
DECODER  
255  
128  
1
99  
5,060  
9,961  
10,060  
Figure 38. AD5160 Equivalent RDAC Circuit  
0
Zero Scale  
Typical device to device matching is process lot dependent and  
may vary by up to 30%. Since the resistance element is  
processed in thin film technology, the change in RAB with  
temperature has a very low 45 ppm/°C temperature coefficient.  
Rev. 0 | Page 12 of 16  
 
 
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中文翻译

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AD5160BRJ5-R2 替代型号

型号 品牌 替代类型 描述 数据表
AD5160BRJZ5-RL7 ADI

类似代替

 		256-Position SPI-Compatible Digital Potentiometer
AD5160BRJZ5-R2 ADI

类似代替

 		256-Position SPI-Compatible Digital Potentiometer

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