DS3904U-020+ Maxim Integrated Products, DS3904U-020+ Datasheet

IC POT NV TRIPLE 128POS 8-USOP

DS3904U-020+

Manufacturer Part Number
DS3904U-020+
Description
IC POT NV TRIPLE 128POS 8-USOP
Manufacturer
Maxim Integrated Products
Datasheet
1.DS3904U-020.pdf (11 pages)

Specifications of DS3904U-020+

Taps
128
Resistance (ohms)
20K
Number Of Circuits
3
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
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Resistance In Ohms
20K
Number Of Pots
Triple
Taps Per Pot
128
Resistance
20 KOhms
Wiper Memory
Non Volatile
Digital Interface
Serial (2-Wire)
Operating Supply Voltage
2.7 V to 5.5 V
Supply Current
200 uA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Description/function
Triple 128 Position Nonvolatile Variable Digital Resistor/Switch
Mounting Style
SMD/SMT
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Temperature Coefficient
125 PPM / C
Tolerance
25 %
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Temperature Coefficient
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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.
Rev 3; 3/07
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
Cell Phones and PDAs
Fibre Optic Transceiver Modules
Portable Electronics
Small and Low-Cost Replacement for
Conventional Mechanical Trimming Resistors/
Dip Switches
Test Equipment
General Description
Triple 128-Position Nonvolatile Digital
MASTER
2-WIRE
0.1μF
(DS3905 ONLY)
Applications
V
CC
4.7kΩ
_____________________________________________ Maxim Integrated Products
4.7kΩ
V
SCL
SDA
A0
A1
A2
GND
CC
DS3904/DS3905
RESISTOR 0
ADDR F8h
RESISTOR 1
ADDR F9h
RESISTOR 2
ADDR FAh
Variable Resistor/Switch
RHIZ
RHIZ
RHIZ
♦ Three 20kΩ Ω , or Two 20kΩ Ω and One 10kΩ Ω , 128-
♦ Resistor Settings are Stored in NV Memory
♦ Each Resistor has a High-Impedance Setting for
♦ 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
DS3904U-010 -40°C to +85°C 8 μSOP
DS3904U-020 -40°C to +85°C 8 μSOP
DS3905U-020 -40°C to +85°C 10 μSOP
Position Linear Digital Resistors
Switch Operation to Control Digital Logic
for DS3905
H0
H1
H2
PART
GND
SDA
SCL
V
TOP VEIW
CC
V
V
CC
CC
V
IN
1
2
3
4
R
R
10
11
DIGITAL
LOGIC
DS3904
TEMP RANGE
μSOP
R
12
INTERFACE EXAMPLES
VARIABLE RESISTANCE
FOR ADJUSTABLE
CURRENT SOURCE
Typical Operating Circuit
2-WIRE
ADDRESSABLE
SWITCH (USING 00h
AND RHIZ SETTINGS)
Ordering Information
8
7
6
5
GAIN
CONTROL
A0
H0
H1
H2
Pin Configurations
PIN-
PACKAGE
GND
SDA
SDL
V
A1
CC
1
2
3
4
5
RESISTANCE (k )
DS3905
μSOP
20/10/20 + High-Z
20/20/20 + High-Z
20/20/20 + High-Z
Features
(R0/R1/R2)
10
9
8
7
6
A2
A0
H0
H1
H2
1

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DS3904U-020+ Summary of contents

Page 1

... Operating Range ♦ -40°C to +85°C Industrial Temperature ♦ Packaging: 8-Pin µSOP for DS3904, 10-pin µSOP for DS3905 PART Applications DS3904U-010 -40°C to +85°C 8 μSOP DS3904U-020 -40°C to +85°C 8 μSOP DS3905U-020 -40°C to +85°C 10 μSOP TOP VEIW SDA 1 SCL 2 ...

Page 2

Triple 128-Position Nonvolatile Variable Digital Resistor/Switch ABSOLUTE MAXIMUM RATINGS Voltage on V Pin Relative to Ground.................-0.5V to +6.0V CC Voltage on SDA, SCL, A0, A1, A2 Relative to Ground*...................................-0. Voltage on H0, H1, and H2 Relative to Ground ...

Page 3

Triple 128-Position Nonvolatile Digital ANALOG RESISTOR CHARACTERISTICS (continued +2.7V to +5.5V -40°C to +85°C, unless otherwise noted PARAMETER SYMBOL Position 7Fh Resistance Position 00h Resistance High Impedance AC ELECTRICAL CHARACTERISTICS (V = +2.7V to ...

Page 4

Triple 128-Position Nonvolatile Digital Variable Resistor/Switch NONVOLATILE MEMORY CHARACTERISTICS (V = +2.7V to +5.5V +70°C PARAMETER SYMBOL EEPROM Writes All voltages are referenced to ground. Note 1: Applies to A0, SDA, SCL for the DS3904 and ...

Page 5

Triple 128-Position Nonvolatile Digital (V = +5.0V +25°C, unless otherwise noted SUPPLY CURRENT vs. TEMPERATURE 160 V = +5V CC 140 120 V = +3V CC 100 80 60 SDA = SCL = ADDRESS ...

Page 6

Triple 128-Position Nonvolatile Digital Variable Resistor/Switch (V = +5.0V +25°C, unless otherwise noted POSITION 3Fh RESISTANCE vs. SUPPLY VOLTAGE 20kΩ RESISTOR 10 10kΩ RESISTOR 5 0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 ...

Page 7

Triple 128-Position Nonvolatile Digital Pin Description PIN NAME DS3904 DS3905 2-Wire Serial Data. Open-drain SDA 1 2 input/output for 2-wire data. 2-Wire Serial Clock. Input for SCL 2 3 2-wire clock Supply Voltage Terminal CC GND 4 ...

Page 8

Triple 128-Position Nonvolatile Digital Variable Resistor/Switch V CC EEPROM DS3905 RHIZ CONTROL V CC F8h RESISTOR 0 MSB GND RHIZ CONTROL SCL DATA F9h RESISTOR 1 SDA 2-WIRE MSB A0 INTERFACE A1 (DS3905 ONLY) A2 RHIZ CONTROL FAh RESISTOR 2 ...

Page 9

Triple 128-Position Nonvolatile Digital 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 The following bus protocol has been ...

Page 10

Triple 128-Position Nonvolatile Digital Variable Resistor/Switch COMMAND BYTE MSB LSB MSB START A2* A1* A0 R/W DEVICE IDENTIFIER SLAVE RHIZ OR ADDRESS CONTROL BIT "FAMILY CODE" *DS3904, USE 0's INSTEAD OF A2 AND A1 FOR THE ...

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 © 2007 Maxim Integrated Products is a registered trademark of Dallas Semiconductor Corporation ...

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