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DS3905U-020/T

更新时间： 2024-09-17 12:59:43
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
11页 392K
描述
Digital Potentiometer, 3 Func, 20000ohm, 2-wire Serial Control Interface, 128 Positions, PDSO10, MICRO, SOP-10

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DS3905U-020/T 技术参数

生命周期：Active零件包装代码：SOIC
包装说明：MICRO, SOP-10针数：10
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.79
Is Samacsys：N其他特性：REST 2 RESISTOR ARRAY VALUES ARE 20000 OHMS EACH WITH 128 POSITION; NONVOLATILE MEMORY
控制接口：2-WIRE SERIAL转换器类型：DIGITAL POTENTIOMETER
JESD-30 代码：S-PDSO-G10长度：3 mm
功能数量：3位置数：128
端子数量：10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封装形状：SQUARE
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH认证状态：Not Qualified
电阻定律：LINEAR最大电阻器端电压：5.5 V
最小电阻器端电压：-0.3 V座面最大高度：1.1 mm
标称供电电压：3 V表面贴装：YES
标称温度系数：123 ppm/ °C温度等级：INDUSTRIAL
端子形式：GULL WING端子节距：0.5 mm
端子位置：DUAL标称总电阻：20000 Ω
宽度：3 mmBase Number Matches：1

DS3905U-020/T 数据手册

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Rev 3; 3/07  
Triple 128-Position Nonvolatile Digital  
Variable Resistor/Switch  
4/DS3905  
General Description  
Features  
The DS3904/DS3905 contain three nonvolatile (NV) low  
temperature coefficient, variable digital resistors. Each  
resistor has 128 user-selectable positions. Additionally,  
the DS3904/DS3905 have a high-impedance setting that  
allows each resistor to function as a digital switch. The  
DS3904/DS3905 can operate over a 2.7V to 5.5V supply  
voltage range, and communication with the device is  
achieved through a 2-wire serial interface. Address pins  
allow multiple DS3904/DS3905s to operate on the same  
two-wire bus. The DS3904 has one address pin, allow-  
ing two DS3904s to share the bus, while the DS3905  
has three address pins, allowing up to eight DS3905s to  
share a common bus. The low-cost and small size of the  
DS3904/DS3905 make them ideal replacements for con-  
ventional mechanical trimming resistors.  
♦ Three 20kΩ, or Two 20kΩ and One 10kΩ, 128-  
Position Linear Digital Resistors  
♦ Resistor Settings are Stored in NV Memory  
♦ Each Resistor has a High-Impedance Setting for  
Switch Operation to Control Digital Logic  
♦ Low Temperature Coefficient  
♦ 2-Wire Serial Interface  
♦ 2.7V to 5.5V Operating Range  
♦ -40°C to +85°C Industrial Temperature  
♦ Packaging: 8-Pin µSOP for DS3904, 10-pin µSOP  
for DS3905  
Ordering Information  
PIN-  
(R0/R1/R2)  
PART  
TEMP RANGE  
PACKAGE RESISTANCE (kꢀ)  
Applications  
DS3904U-010 -40°C to +85°C 8 μSOP  
DS3904U-020 -40°C to +85°C 8 μSOP  
DS3905U-020 -40°C to +85°C 10 μSOP  
20/10/20 + High-Z  
20/20/20 + High-Z  
20/20/20 + High-Z  
Power-Supply Calibration  
Cell Phones and PDAs  
Fibre Optic Transceiver Modules  
Portable Electronics  
Pin Configurations  
TOP VEIW  
Small and Low-Cost Replacement for  
Conventional Mechanical Trimming Resistors/  
Dip Switches  
A1  
1
2
3
4
5
10 A2  
SDA  
SCL  
1
2
3
4
8
7
6
5
A0  
H0  
H1  
H2  
SDA  
9
8
7
6
A0  
H0  
H1  
H2  
SDL  
Test Equipment  
DS3904  
DS3905  
V
CC  
V
CC  
GND  
GND  
μSOP  
μSOP  
Typical Operating Circuit  
INTERFACE EXAMPLES  
V
V
CC  
V
CC  
DS3904/DS3905  
VARIABLE RESISTANCE  
FOR ADJUSTABLE  
CURRENT SOURCE  
R
R
10  
V
0.1μF  
CC  
RHIZ  
RHIZ  
H0  
H1  
RESISTOR 0  
ADDR F8h  
4.7kΩ 4.7kΩ  
CC  
SCL  
SDA  
2-WIRE  
MASTER  
11  
DIGITAL  
LOGIC  
2-WIRE  
ADDRESSABLE  
SWITCH (USING 00h  
AND RHIZ SETTINGS)  
RESISTOR 1  
ADDR F9h  
A0  
V
IN  
A1  
A2  
(DS3905 ONLY)  
RHIZ  
GAIN  
CONTROL  
H2  
RESISTOR 2  
ADDR FAh  
GND  
R
12  
_____________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...11

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