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AD5206BR100

更新时间： 2024-01-24 08:29:29
品牌 Logo 应用领域
亚德诺 - ADI 电位器
页数 文件大小 规格书
11页 176K
描述
4-/6-Channel Digital Potentiometers

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中文翻译

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AD5206BR100 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：SOIC包装说明：MS-013AD, SOIC-24
针数：24Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.63Is Samacsys：N
其他特性：CAN ALSO OPERATE FROM +/-2.3V TO +/-2.7V SUPPLY标称带宽：0.069 kHz
控制接口：3-WIRE SERIAL转换器类型：DIGITAL POTENTIOMETER
JESD-30 代码：R-PDSO-G24JESD-609代码：e0
长度：15.4 mm湿度敏感等级：1
标称负供电电压：-2.5 V功能数量：6
位置数：256端子数量：24
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：SOP
封装等效代码：SOP24,.4封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：220
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：2.7 V最小电阻器端电压：-2.3 V
座面最大高度：2.65 mm子类别：Digital Potentiometers
标称供电电压：2.5 V表面贴装：YES
标称温度系数：700 ppm/ °C温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn85Pb15)端子形式：GULL WING
端子节距：1.27 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：7.5 mmBase Number Matches：1

AD5206BR100 数据手册

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AD5204/AD5206  
OPERATION  
data 00H. This B terminal connection has a wiper contact resis-  
tance of 45 Ω. The second connection (10 kΩ part) is the first  
tap point located at 84 Ω [= RBA (nominal resistance)/256 + RW  
= 84 Ω + 45 Ω] for data 01H. The third connection is the next  
tap point representing 78 + 45 = 123 Ω for data 02H. Each LSB  
data value increase moves the wiper up the resistor ladder until  
the last tap point is reached at 10006 Ω. The wiper does not  
directly connect to the A terminal. See Figure 16 for a simplified  
diagram of the equivalent RDAC circuit.  
The AD5204/AD5206 provides a four-/six-channel, 256-position  
digitally-controlled variable resistor (VR) device. Changing the  
programmed VR settings is accomplished by clocking in a 11-  
bit serial data word into the SDI (Serial Data Input) pin. The  
format of this data word is three address bits, MSB first, fol-  
lowed by eight data bits, MSB first. Table I provides the serial  
register data word format.  
Table I. Serial-Data Word Format  
The general transfer equation determining the digitally pro-  
grammed output resistance between Wx and Bx is:  
ADDR  
DATA  
B10 B9 B8  
B7 B6 B5 B4 B3 B2 B1 B0  
R
WB (Dx) = (Dx)/256 × RBA + RW  
(1)  
where Dx is the data contained in the 8-bit RDACx latch, and  
RBA is the nominal end-to-end resistance.  
A2 A1 A0  
D7 D6 D5 D4 D3 D2 D1 D0  
MSB  
LSB MSB  
LSB  
210  
28 27  
20  
For example, when VB = 0 V and A terminal is open-circuit, the  
following output resistance values will be set for the following  
RDAC latch codes (applies to the 10K potentiometer):  
See Table IV for the AD5204/AD5206 address assignments to  
decode the location of VR latch receiving the serial register data  
in Bits B7 through B0. VR outputs can be changed one at a  
time in random sequence. The AD5204 presets to a midscale by  
asserting the PR pin, simplifying fault condition recovery at  
power up. Both parts have an internal power ON preset that  
places the wiper in a preset midscale condition at power ON. In  
addition, the AD5204 contains a power shutdown SHDN pin  
which places the RDAC in a zero power consumption state  
where Terminals Ax are open circuited and the wiper Wx is  
connected to Bx resulting in only leakage currents being con-  
sumed in the VR structure. In shutdown mode the VR latch  
settings are maintained, so that, returning to operational mode  
from power shutdown, the VR settings return to their previous  
resistance values.  
Table II.  
D
(DEC)  
RWB-⍀  
Output State  
255  
128  
1
10006  
5045  
84  
Full Scale  
Midscale (PR = 0 Condition)  
1 LSB  
0
45  
Zero Scale (Wiper Contact Resistance)  
Note that in the zero-scale condition a finite wiper resistance of  
45 Ω is present. Care should be taken to limit the current flow  
between W and B in this state to a maximum value of 20 mA to  
avoid degradation or possible destruction of the internal switch  
contact.  
Ax  
R
S
Like the mechanical potentiometer the RDAC replaces, it is  
totally symmetrical. The resistance between the Wiper W and  
SHDN  
R
Terminal A produces a digitally controlled resistance RWA  
.
S
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
When these terminals are used the B terminal should be tied to  
the wiper. Setting the resistance value for RWA starts at a maxi-  
mum value of resistance and decreases as the data loaded in the  
latch is increased in value. The general transfer equation for this  
operation is:  
R
S
Wx  
RDAC  
LATCH  
&
R
WA (Dx) = (256–Dx)/256 × RBA + RW  
(2)  
where Dx is the data contained in the 8-bit RDACx latch, and  
RBA is the nominal end-to-end resistance. For example, when  
VA = 0 V and B terminal is tied to the Wiper W the following  
output resistance values will be set for the following RDAC  
latch codes:  
DECODER  
R
S
Bx  
Table III.  
Figure 16. AD5204/AD5206 Equivalent RDAC Circuit  
D
(DEC)  
PROGRAMMING THE VARIABLE RESISTOR  
Rheostat Operation  
RWA-⍀  
Output State  
The nominal resistance of the RDAC between Terminals A and  
B are available with values of 10 kΩ, 50 kΩ and 100 kΩ. The  
last digits of the part number determine the nominal resistance  
value, e.g., 10 kΩ = 10; 100 kΩ = 100. The nominal resistance  
(RAB) of the VR has 256 contact points accessed by the wiper  
terminal, plus the B terminal contact. The eight-bit data word  
in the RDAC latch is decoded to select one of the 256 possible  
settings. The wiper’s first connection starts at the B terminal for  
255  
128  
1
84  
Full Scale  
Midscale (PR = 0 Condition)  
1 LSB  
5045  
10006  
10045  
0
Zero Scale  
–8–  
REV. 0  
1...567891011

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AD5206BR100 替代型号

型号 品牌 替代类型 描述 数据表
AD5206BR100 ADI

当前型号

 4-/6-Channel Digital Potentiometers
AD5206BRUZ100-RL7 ADI

完全替代

 4-/6-Channel Digital Potentiometers
AD5206BN100 ADI

完全替代

 4-/6-Channel Digital Potentiometers

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