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AD5231BRUZ100-RL7 PDF预览

AD5231BRUZ100-RL7

更新时间： 2024-01-05 01:16:46
品牌 Logo 应用领域
亚德诺 - ADI 转换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 536K
描述
Nonvolatile Memory, 1024-Position Digital Potentiometer

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中文翻译

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AD5231BRUZ100-RL7 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：TSSOP
包装说明：TSSOP, TSSOP16,.25针数：16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.35
其他特性：LINEAR OR LOG TAPER SETTINGS; NONVOLATILE MEMORY; CAN ALSO OPERATE FROM +/-2.25V TO +/-2.75V SUPPLY标称带宽：0.044 kHz
控制接口：3-WIRE SERIAL转换器类型：DIGITAL POTENTIOMETER
JESD-30 代码：R-PDSO-G16JESD-609代码：e3
长度：5 mm湿度敏感等级：1
功能数量：1位置数：1024
端子数量：16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：TSSOP16,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260电源：+-2.5/3/5 V
认证状态：Not Qualified电阻定律：LOGARITHMIC
最大电阻容差：20%最大电阻器端电压：3 V
最小电阻器端电压：座面最大高度：1.2 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：600 ppm/ °C
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
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：100000 Ω宽度：4.4 mm
Base Number Matches：1

AD5231BRUZ100-RL7 数据手册

 浏览型号AD5231BRUZ100-RL7的Datasheet PDF文件第22页浏览型号AD5231BRUZ100-RL7的Datasheet PDF文件第23页浏览型号AD5231BRUZ100-RL7的Datasheet PDF文件第24页浏览型号AD5231BRUZ100-RL7的Datasheet PDF文件第26页浏览型号AD5231BRUZ100-RL7的Datasheet PDF文件第27页浏览型号AD5231BRUZ100-RL7的Datasheet PDF文件第28页 
Data Sheet  
AD5231  
PROGRAMMABLE BIDIRECTIONAL CURRENT  
SOURCE  
RESISTANCE SCALING  
The AD5231 offers 10 kΩ, 50 kΩ, and 100 kΩ nominal  
resistance. For users who need lower resistance but want to  
maintain the number of adjustment steps, they can parallel  
multiple devices. For example, Figure 54 shows a simple scheme  
of paralleling two AD5231s. To adjust half the resistance  
linearly per step, users need to program both devices coherently  
with the same settings and tie the terminals as shown.  
For applications that require bidirectional current control or  
higher voltage compliance, a Howland current pump can be a  
solution. If the resistors are matched, the load current is  
(
R2A + R2B  
)
R1  
R2B  
IL =  
×VW  
(8)  
R1  
150kΩ  
R2  
15kΩ  
A1  
B1  
A2  
B2  
W1  
W2  
C1  
10pF  
+15V  
V+  
LD  
Figure 54. Reduce Resistance by Half with Linear Adjustment Characteristics  
–
OP2177  
In voltage diver mode, by paralleling a discrete resistor as  
shown in Figure 55, a proportionately lower voltage appears at  
Terminals A–B. This translates into a finer degree of precision,  
because the step size at Terminal W is smaller. The voltage can  
be found as follows:  
+2.5V  
A
V–  
+
R2B  
+15V  
V+  
A2  
50Ω  
+
AD5231  
–15V  
B
W
V
OP2177  
V–  
L
R1  
150kΩ  
R2A  
14.95kΩ  
–
R
L
500Ω  
–2.5V  
A1  
–15V  
(RAB // R2)  
D
I
L
VW (D) =  
×
× VDD  
(10)  
R3 + RAB // R2 1024  
Figure 53. Programmable Bidirectional Current Source  
R2B, in theory, can be made as small as necessary to achieve the  
current needed within the A2 output current-driving capability.  
In this circuit, OP2177 delivers 5 mA in both directions, and  
the voltage compliance approaches 15 V. It can be shown that  
the output impedance is  
R3  
A
R2  
R1  
W
B
R1' R2B (R1 + R2A)  
ZO  
=
(9)  
Figure 55. Lowering the Nominal Resistance  
R1R2' − R1' (R2A + R2B)  
Figure 54 and Figure 55 show that the digital potentiometers  
change steps linearly. On the other hand, pseudo log taper  
adjustment is usually preferred in applications such as audio  
control. Figure 56 shows another type of resistance scaling. In  
this configuration, the smaller the R2 with respect to R1, the  
more the pseudo log taper characteristic of the circuit behaves.  
ZO can be infinite if resistors R1 and R2 match precisely with R1  
and R2A + R2B, respectively. On the other hand, ZO can be  
negative if the resistors are not matched. As a result, C1, in the  
range of 1 pF to 10 pF, is needed to prevent oscillation from the  
negative impedance.  
A
V
O
R1  
B
W
R2  
Figure 56. Resistor Scaling with Pseudo Log Adjustment Characteristics  
Rev. D | Page 25 of 28  
 
 
 
 
 
 
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中文翻译

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AD5231BRUZ100-RL7 替代型号

型号 品牌 替代类型 描述 数据表
AD5231BRUZ100 ADI

类似代替

 Nonvolatile Memory, 1024-Position Digital Potentiometer
AD5231BRU100-REEL7 ADI

功能相似

 Nonvolatile Memory, 1024-Position Digital Potentiometers
AD5231BRU100 ADI

类似代替

 Nonvolatile Memory, 1024-Position Digital Potentiometers

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