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DS3904|DS3905 PDF预览

DS3904|DS3905

更新时间： 2024-09-16 23:48:55
品牌 Logo 应用领域
达拉斯 - DALLAS 电位器开关
页数 文件大小 规格书
11页 254K
描述
Triple. 128-Position. Nonvolatile. Variable. Digital Resistor/Switch

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DS3904|DS3905 数据手册

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Rev 1; 8/03  
Triple 128-Position Nonvolatile Digital  
Variable Resistor/Switch  
General Description  
Features  
♦ Three 20kΩ, 128-Position Linear Digital Resistors  
♦ Resistor Settings are Stored in NV Memory  
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.  
♦ 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-  
PACKAGE  
PART  
TEMP RANGE  
RESISTANCE  
8 µSOP  
20kΩ + Hi-Z  
20kΩ + Hi-Z  
DS3904U-020 -40°C to +85°C  
DS3905U-020 -40°C to +85°C  
Applications  
10 µSOP  
Power-Supply Calibration  
Cell Phones and PDAs  
Pin Configurations  
Fibre Optic Transceiver Modules  
Portable Electronics  
TOP VEIW  
A1  
1
2
3
4
5
10 A2  
Small and Low-Cost Replacement for  
Conventional Mechanical Trimming Resistors/  
Dip Switches  
SDA  
SCL  
1
2
3
4
8
7
6
5
A0  
H0  
H1  
H2  
SDA  
9
8
7
6
A0  
H0  
H1  
H2  
SDL  
DS3904  
DS3905  
V
CC  
V
CC  
Test Equipment  
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  
RESISTOR 0  
20kΩ  
ADDR F8h  
H0  
H1  
4.7kΩ 4.7kΩ  
CC  
SCL  
SDA  
2-WIRE  
MASTER  
11  
DIGITAL  
LOGIC  
2-WIRE  
ADDRESSABLE  
SWITCH (USING 00h  
AND RHIZ SETTINGS)  
RESISTOR 1  
20kΩ  
ADDR F9h  
A0  
V
IN  
A1  
A2  
(DS3905 ONLY)  
RHIZ  
GAIN  
CONTROL  
RESISTOR 2  
20kΩ  
ADDR FAh  
H2  
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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与DS3904|DS3905相关器件

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DS3904U-010 MAXIM

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 		Triple 128-Position Nonvolatile Digital
DS3904U-010+T&R MAXIM

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 		Digital Potentiometer, 3 Func, 20000ohm, 2-wire Serial Control Interface, 128 Positions, P
DS3904U-020 DALLAS

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 		Triple 128-Position Nonvolatile Digital Variable Resistor/Switch
DS3904U-020 MAXIM

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 		Triple 128-Position Nonvolatile Digital
DS3904U-020/T&R MAXIM

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 		Digital Potentiometer, 3 Func, 20000ohm, 2-wire Serial Control Interface, 128 Positions, P
DS3904U-020+ MAXIM

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 		Digital Potentiometer, 3 Func, 20000ohm, 2-wire Serial Control Interface, 128 Positions, P
DS3904U-020+T&R MAXIM

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 		暂无描述
DS3905 DALLAS

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 		Triple 128-Position Nonvolatile Digital Variable Resistor/Switch
DS3905 MAXIM

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 		Triple 128-Position Nonvolatile Digital
DS3905 ADI

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 		三路、128抽头、非易失、数控可变电阻/开关

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