Rev 0; 4/03
Hex Nonvolatile Potentiometer with
I/O and Memory
General Description
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 50k鈩?/div>
potentiometers in parallel. Each group of three poten-
tiometers shares a common high side and forms an
equivalent resistance of 16.6k鈩?(three 50k鈩?poten-
tiometers in parallel).
鈾?/div>
Six 256-Position NV Potentiometers
鈾?/div>
Four General-Purpose NV I/O Pins
鈾?/div>
64 Bytes of User EEPROM Memory
鈾?/div>
0 to 5.5V on Any Potentiometer Terminal,
Independent of V
CC
鈾?/div>
All Six Potentiometers Share a Common Low Side
鈾?/div>
Potentiometers Separated into Two Groups of
Three Potentiometers, Each Sharing a Common
High Side
鈾?/div>
2-Wire Serial Interface
鈾?/div>
Wide Supply Range (2.7V to 5.5V)
鈾?/div>
Up to Eight DS3930s Can Share the Same
2-Wire Bus
Features
DS3930
Applications
RF Transceivers
Voltage References
Power Supply Calibration
Mobile Phones and PDAs
Fiber Optic Transceiver Modules
Portable Electronics
Radio Tuners
Small, Low-Cost Replacement for Mechanical
Potentiometers
Ordering Information
PART
DS3930E
PIN-PACKAGE
20 TSSOP
Pin Configuration
TOP VIEW
A0 1
A1 2
A2 3
SDA 4
SCL 5
I/O
0
6
I/O
1
7
I/O
2
8
V
CC
9
GND 10
20 HI
0-2
V
CC
Typical Operating Circuit
V
CC
A0
HI
0-2
W
0
W
1
W
2
LO
0-5
WIPER
TERMINALS
19 W
0
A1
18 W
1
17 W
2
4.7k鈩?/div>
4.7k鈩?/div>
A2
DS3930
16 LO
0-5
15 HI
3-5
14 W
3
13 W
4
12 W
5
11 I/O
3
2-WIRE
INTERFACE
SDA
SCL
I/O
0
DIGITAL
NONVOLATILE I/O
V
CC
I/O
1
I/O
2
V
CC
GND
DS3930
HI
3-5
W
3
W
4
W
5
I/O
3
DIGITAL
NONVOLATILE I/O
WIPER
TERMINALS
DECOUPLING CAP
0.1碌F
TSSOP
_____________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
DS3930E 產(chǎn)品屬性
Lead (SnPb) Finish for COTSObsolescence Mitigation Program
74
集成電路 (IC)
數(shù)據(jù)采集 - 數(shù)字電位器
-
256
16.5k
6
標(biāo)準(zhǔn)值 ±250 ppm/°C
非易失
I²C（設(shè)備位址）
2.7 V ~ 5.5 V
-40°C ~ 85°C
表面貼裝
20-TSSOP（0.173"，4.40mm 寬）
20-TSSOP
管件
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