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DS3930

更新时间： 2024-11-21 22:40:39
品牌 Logo 应用领域
达拉斯 - DALLAS 电位器
页数 文件大小 规格书
12页 617K
描述
Hex Nonvolatile Potentiometer with I/O and Memory

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DS3930 数据手册

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Rev 0; 4/03  
Hex Nonvolatile Potentiometer with  
I/O and Memory  
General Description  
Features  
The DS3930 contains six 256-position nonvolatile (NV)  
potentiometers, 64 bytes of NV user EEPROM memory,  
and four programmable NV I/O pins. The six poten-  
tiometers all share a common low side. The potentiome-  
ters are separated into two groups of three 50kΩ  
potentiometers in parallel. Each group of three poten-  
tiometers shares a common high side and forms an  
equivalent resistance of 16.6kΩ (three 50kΩ poten-  
tiometers in parallel).  
♦ Six 256-Position NV Potentiometers  
♦ Four General-Purpose NV I/O Pins  
♦ 64 Bytes of User EEPROM Memory  
♦ 0 to 5.5V on Any Potentiometer Terminal,  
Independent of V  
CC  
♦ All Six Potentiometers Share a Common Low Side  
♦ Potentiometers Separated into Two Groups of  
Three Potentiometers, Each Sharing a Common  
High Side  
Applications  
♦ 2-Wire Serial Interface  
RF Transceivers  
♦ Wide Supply Range (2.7V to 5.5V)  
Voltage References  
♦ Up to Eight DS3930s Can Share the Same  
Power Supply Calibration  
Mobile Phones and PDAs  
Fiber Optic Transceiver Modules  
Portable Electronics  
Radio Tuners  
2-Wire Bus  
Ordering Information  
PART  
DS3930E  
PIN-PACKAGE  
20 TSSOP  
Small, Low-Cost Replacement for Mechanical  
Potentiometers  
Pin Configuration  
Typical Operating Circuit  
TOP VIEW  
V
CC  
V
CC  
A0  
A1  
1
2
3
4
5
6
7
8
9
20 HI  
0-2  
HI  
A0  
0-2  
19 W0  
A1  
W
W
W
0
1
2
4.7kΩ  
4.7kΩ  
A2  
18  
17  
W
W
1
2
WIPER  
TERMINALS  
A2  
SDA  
SCL  
SDA  
SCL  
DS3930  
2-WIRE  
INTERFACE  
16 LO  
0-5  
LO  
0-5  
I/O  
I/O  
I/O  
V
15 HI  
0
1
2
3-5  
DS3930  
I/O  
0
HI  
3-5  
14  
13  
12  
W
W
3
4
DIGITAL  
NONVOLATILE I/O  
W
W
W
I/O  
I/O  
3
4
5
1
2
WIPER  
TERMINALS  
W
CC  
5
V
CC  
GND 10  
11 I/O  
3
V
CC  
DECOUPLING CAP  
DIGITAL  
NONVOLATILE I/O  
0.1µF  
GND  
I/O  
3
TSSOP  
_____________________________________________ 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...12

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