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AD5293BRUZ-50-RL7 PDF预览

AD5293BRUZ-50-RL7

更新时间： 2024-01-16 12:19:47
品牌 Logo 应用领域
亚德诺 - ADI 转换器数字电位计电阻器光电二极管PC
页数 文件大小 规格书
24页 938K
描述
Single-Channel, 1024-Position, 1percent R-Tolerance Digital Potentiometer

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AD5293BRUZ-50-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, TSSOP14,.25针数：14
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.38
Samacsys Confidence：3Samacsys Status：Released
Samacsys PartID：342632Samacsys Pin Count：14
Samacsys Part Category：Integrated CircuitSamacsys Package Category：Small Outline Packages
Samacsys Footprint Name：14-Lead TSSOPSamacsys Released Date：2017-01-11 11:21:59
Is Samacsys：N其他特性：DEVICE SUPPORTS DUAL SUPPLY OPERATION
标称带宽：0.21 kHz控制接口：3-WIRE SERIAL
转换器类型：DIGITAL POTENTIOMETERJESD-30 代码：R-PDSO-G14
JESD-609代码：e3长度：5 mm
湿度敏感等级：1标称负供电电压：-15 V
功能数量：1位置数：1024
端子数量：14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：TSSOP14,.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）：260电源：+-10.5/+-16.5/21/33 V
认证状态：Not Qualified电阻定律：LINEAR
最大电阻容差：1%最大电阻器端电压：16.5 V
最小电阻器端电压：-9 V座面最大高度：1.2 mm
子类别：Digital Potentiometers标称供电电压：15 V
表面贴装：YES技术：CMOS
标称温度系数：35 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：50000 Ω
宽度：4.4 mmBase Number Matches：1

AD5293BRUZ-50-RL7 数据手册

 浏览型号AD5293BRUZ-50-RL7的Datasheet PDF文件第17页浏览型号AD5293BRUZ-50-RL7的Datasheet PDF文件第18页浏览型号AD5293BRUZ-50-RL7的Datasheet PDF文件第19页浏览型号AD5293BRUZ-50-RL7的Datasheet PDF文件第21页浏览型号AD5293BRUZ-50-RL7的Datasheet PDF文件第22页浏览型号AD5293BRUZ-50-RL7的Datasheet PDF文件第23页 
AD5293  
Table 13. Control Register Function  
Register Name Bit Name  
Description  
Control  
C2  
Calibration enable.  
0 = resistor performance mode (default).  
1 = normal mode.  
C1  
RDAC register write protect.  
0 = locks the wiper position through the digital interface (default).  
1 = allows update of wiper position through digital interface.  
The nominal resistance between Terminal A and Terminal B,  
RDAC ARCHITECTURE  
RAB, is available in 20 kΩ, 50 kΩ, and 100 kΩ and has 1024 tap  
points that are accessed by the wiper terminal. The 10-bit data  
in the RDAC latch is decoded to select one of the 1024 possible  
wiper settings. The AD5293 contains an internal 1% resistor  
tolerance calibration feature that can be enabled or disabled,  
enabled by default by programming Bit C2 of the control  
register (see Table 12 and Table 13).  
To achieve optimum performance, Analog Devices, Inc., has  
patented the RDAC segmentation architecture for all the digital  
potentiometers. In particular, the AD5293 employs a 3-stage  
segmentation approach, as shown in Figure 46. The AD5293  
wiper switch is designed with transmission gate CMOS topology  
and with the gate voltage derived from VDD  
.
A
The digitally programmed output resistance between the  
W terminal and the A terminal, RWA, and the W terminal  
and B terminal, RWB, is calibrated to give a maximum of 1%  
absolute resistance error over both the full supply and temperature  
ranges. As a result, the general equation for determining the  
digitally programmed output resistance between the W terminal  
and B terminal is  
R
L
L
R
R
M
S
W
R
M
D
1024  
R
R
W
R
WB (D) =  
×RAB  
(1)  
W
where:  
W
10-BIT  
ADDRESS  
DECODER  
D is the decimal equivalent of the binary code loaded in the  
10-bit RDAC register.  
R
M
R
L
R
AB is the end-to-end resistance.  
R
M
Similar to the mechanical potentiometer, the resistance of the RDAC  
between the W terminal and the A terminal also produces a digitally  
controlled complementary resistance, RWA. RWA is also calibrated  
to give a maximum of 1% absolute resistance error. RWA starts at  
the maximum resistance value and decreases as the data loaded  
into the latch increases. The general equation for this operation is  
R
L
B
Figure 46. Simplified RDAC Circuit  
1024 − D  
1024  
R
WA (D) =  
×RAB  
(2)  
PROGRAMMING THE VARIABLE RESISTOR  
Rheostat Operation—1% Resistor Tolerance  
where:  
D is the decimal equivalent of the binary code loaded in the  
10-bit RDAC register.  
AB is the end-to-end resistance.  
The AD5293 operates in rheostat mode when only two terminals  
are used as a variable resistor. The unused terminal can be left  
floating or it can be tied to the W terminal, as shown in Figure 47.  
R
In the zero-scale condition, a finite total wiper resistance of 120 Ω  
is present. Regardless of the setting in which the part is operating,  
care should be taken to limit the current between the A terminal to  
B terminal, the W terminal to the A terminal, and the W terminal  
to the B terminal to the maximum continuous current of 3 mA or  
to the pulse current specified in Table 6. Otherwise, degradation,  
or possible destruction of the internal switch contact, can occur.  
A
A
A
W
W
W
B
B
B
Figure 47. Rheostat Mode Configuration  
Rev. D | Page 20 of 24  
 
 
 
 
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