DS3903E-020+ Maxim Integrated Products, DS3903E-020+ Datasheet

IC POT NV TRIPLE 128POS 20-TSSOP

DS3903E-020+

Manufacturer Part Number
DS3903E-020+
Description
IC POT NV TRIPLE 128POS 20-TSSOP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of DS3903E-020+

Taps
128
Resistance (ohms)
10K, 10K, 90K
Number Of Circuits
3
Temperature Coefficient
300 ppm/°C Typical
Memory Type
Non-Volatile
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
20-TSSOP
Resistance In Ohms
10K, 10K, 90K
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The DS3903 contains three nonvolatile (NV) low tem-
perature coefficient digital potentiometers, which can
be accessed through a 2-wire bus. It operates in both
3V and 5V systems, and it features a write-protect pin
that can lock the positions of the potentiometers. An
address pin allows two DS3903s to be placed on the
same 2-wire bus.
Rev 0; 6/02
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.
Power-Supply Calibration
Mobile Phones and PDAs
Fiber Optics Transceiver Modules
Portable Electronics
A Small, Low-Cost Replacement for Mechanical
Potentiometers
GND
SDA
N.C.
SCL
WP
W1
A0
L0
L1
L2
10
1
2
3
7
4
5
6
8
9
General Description
TSSOP
DS3903
Pin Configuration
20
19
18
17
16
15
14
13
12
11
Applications
V
N.C.
N.C.
N.C.
N.C.
H0
W0
H1
W2
H2
CC
_____________________________________________ Maxim Integrated Products
Triple 128-Position Nonvolatile
♦ Three 128-Position Linear Potentiometers
♦ NV Wiper Storage
♦ 0 to 5.5V on Any Potentiometer Terminal
♦ Low End-to-End Temperature Coefficient
♦ Operates on an Industry-Standard 2-Wire Bus
♦ Write-Protect Pin
♦ Supply Voltage: 3V or 5V
♦ Operating Temperature Range: -40°C to +85°C
♦ Packaging: 20-Pin TSSOP
DS3903E-020
DS3903E-020/T&R
MASTER
2-WIRE
0.1µF
(Two 10kΩ, One 90kΩ)
Independent of V
Digital Potentiometer
PART
V
CC
4.7kΩ
4.7kΩ
Typical Operating Circuit
V
SCL
SDA
WP
A0
GND
CC
DS3903
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
POTENTIOMETER 2
10kΩ
ADDDR FAh
POTENTIOMETER 0
10kΩ
ADDDR F9h
POTENTIOMETER 1
90kΩ
ADDDR F8h
CC
Ordering Information
V
V
CC
CC
5.1kΩ
Iref
PIN-PACKAGE
20 TSSOP
20 TSSOP
(Tape-and-Reel)
MAX427
V
VARIABLE RESISTANCE
FOR ADJUSTABLE
CURRENT SOURCE
CC
VREF1
Features
HIGH-OUTPUT-IMPEDANCE
VOLTAGE REFERENCE
VREF2
BUFFERED
VOLTAGE
REFERENCE
1

Related parts for DS3903E-020+

DS3903E-020+ Summary of contents

Page 1

... Any Potentiometer Terminal Independent of V ♦ Low End-to-End Temperature Coefficient Applications ♦ Operates on an Industry-Standard 2-Wire Bus ♦ Write-Protect Pin ♦ Supply Voltage ♦ Operating Temperature Range: -40°C to +85°C ♦ Packaging: 20-Pin TSSOP PART DS3903E-020 DS3903E-020/T& N.C. 18 N.C. 0.1µF 17 N.C. ...

Page 2

Triple 128-Position Nonvolatile Digital Potentiometer ABSOLUTE MAXIMUM RATINGS Voltage on V Pin Relative to Ground.................-0.5V to +6.0V CC Voltage on SDA, SCL, A0, and WP Relative to Ground ...........................................................-0.5V to Voltage on L0, L1, L2, W0, W1, W2, H0, H1, ...

Page 3

AC ELECTRICAL CHARACTERISTICS (V = 2.7V to 5.5V -40°C to +85°C PARAMETER SYMBOL SCL Clock Frequency Bus Free Time Between Stop and Start Conditions Hold Time (Repeated) Start Condition Low Period of SCL Clock High Period ...

Page 4

Triple 128-Position Nonvolatile Digital Potentiometer All voltages are referenced to ground. Note 1: I specified for V equal to 3.0V and 5.0V while control port logic pins are driven to the appropriate Note 2: STBY CC logic levels. Appropriate logic ...

Page 5

T CC WIPER RESISTANCE Ω vs. WIPER VOLTAGE (10k ) 350 300 250 200 150 100 CC POS 7Fh ...

Page 6

Triple 128-Position Nonvolatile Digital Potentiometer (VCC = 5.0V, 10kΩ plots apply to both pot0 and pot2 +25°C unless otherwise noted.) VOLTAGE-DIVIDER RELATIVE LINEARITY vs. WIPER SETTING (90k 0.05 0.04 0.03 0.02 0. WIPER SETTING ...

Page 7

V CC DS3903 V CC EEPROM RWP POTENTIOMETER 2 ADDDR FAh WP GND POTENTIOMETER 0 ADDDR F9h SCL DATA 2-WIRE POTENTIOMETER 1 SDA INTERFACE ADDDR F8h A0 Figure 1. DS3903 Block Diagram Detailed Description The DS3903 contains three NV, low-temperature ...

Page 8

Triple 128-Position Nonvolatile Digital Potentiometer SDA MSB SLAVE ADDRESS SCL 1 2 START CONDITION Figure 2. 2-Wire Data Transfer Protocol SDA t BUF t LOW SCL t HD:STA STOP START Figure 3. 2-Wire AC Characteristics word consists of 101000 binary ...

Page 9

EEPROM memory. All inputs are w disabled during this write cycle. The DS3903 is capable of an 8-byte page write. A page write is initiated the same way as a byte write, but the master ...

Page 10

Triple 128-Position Nonvolatile Digital Potentiometer The following bus protocol has been defined: Data transfer can be initiated only when the bus is not busy. During data transfer, the data line must remain stable whenever the clock line is high. Changes ...

Page 11

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11 © 2002 Maxim Integrated Products ...

Related keywords