DS3930 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – RELIABILITY REPORT FOR DS3930, REV A1

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 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).
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
Features
♦ 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
♦ 2-Wire Serial Interface
♦ Wide Supply Range (2.7V to 5.5V)
♦ Up to Eight DS3930s Can Share the Same
2-Wire Bus
PART
DS3930E
Ordering Information
PIN-PACKAGE
20 TSSOP
Pin Configuration
TOP VIEW
A0 1
A1 2
A2 3
SDA 4
SCL 5
I/O₀ 6
I/O₁ 7
I/O₂ 8
V_CC 9
GND 10
DS3930
TSSOP
20 HI_0-2
19 W0
18 W₁
17 W₂
16 LO_0-5
15 HI_3-5
14 W₃
13 W₄
12 W₅
11 I/O₃
Typical Operating Circuit
VCC
4.7kΩ
2-WIRE
INTERFACE
4.7kΩ
DIGITAL
NONVOLATILE I/O
VCC
DECOUPLING CAP
0.1µF
A0
A1
A2
SDA
SCL
DS3930
I/O0
I/O1
I/O2
VCC
GND
HI0-2
W0
W1
W2
LO0-5
HI3-5
W3
W4
W5
I/O3
VCC
WIPER
TERMINALS
WIPER
TERMINALS
DIGITAL
NONVOLATILE I/O
_____________________________________________ Maxim Integrated Products 1
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