MAXIM INTEGRATED PRODUCTS DS1803 Addressable Dual Digital Potentiometer
Summary
This addressable dual digital potentiometer provides two independently adjustable 256-position potentiometers controlled via a simple 2-wire serial interface. Ideal for applications requiring precise, non-volatile analog voltage adjustment without complex wiring. The manual details full device operation, communication protocols (SDA/SCL), and addressing schemes, making it essential for electronics engineers designing compact, programmable circuitry using standard resistors (10kΩ, 50kΩ, or 100kΩ).
Page 1 Text Content
DS1803
Addressable Dual Digital Potentiometer
www.maxim-ic.com
FEATURES PIN ASSIGNMENT 3V or 5V Operation Ultra-Low Power Consumption H1 1 14 VCC Two Digitally Controlled, 256-Position L1 2 13 NC Potentiometers
14-Pin TSSOP (173 mil) and 16-Pin SO (150
mil) Packaging Available for Surface-Mount
Applications
A0 6 9 SDA
Addressable Using 3 Address Inputs
GND 7 8 SCL
2-Wire Serial Interface Operating Temperature Range:
- Industrial: -40C to +85C DS1803 14-PIN TSSOP (173 MIL)
Standard Resistance Values: - DS1803-010 10k - DS1803-050 50k
H1 1 16 VCC
- DS1803-100 100k
NC 2 15 NC L1 3 14 H0 W1 4 13 L0 A2 5 12 W0
PIN DESCRIPTION
A1 6 11 NC
L0, L1 - Low End of Resistor
H0, H1 - High End of Resistor A0 7 10 SDA
W0,W1 - Wiper terminal of Resistor GND 8 9 SCL VCC - 3V/5V Power Supply Input A0, A1, A2 - Chip Select Inputs DS1803Z 16-PIN SO (150 MIL) SDA - Serial Data I/O DS1803 16-PIN DIP (300 MIL)
SCL - Serial Clock Input See Mech. Drawings Section on Website
GND - Ground NC - No Connection
DESCRIPTION The DS1803 addressable dual digital potentiometer features two independently controlled 256-position potentiometers. Device control is achieved through a 2-wire serial interface. Three address pins allow up to 8 DS1803’s to share the same 2-wire interface. The exact wiper position of each potentiometer can be written or read. The DS1803 is available in a 16-pin DIP, 16-pin SO, and 14-pin TSSOP package. The device is available in three standard resistance values: 10kΩ, 50kΩ, and 100kΩ and is specified over the industrial temperature range.
1 of 11 041305
Page Summary Contents For MAXIM INTEGRATED PRODUCTS DS1803 Addressable Dual Digital Potentiometer
Manual Details
| Brand | Maxim Integrated |
|---|---|
| Pages | 11 |
| File Size | 247.42 KB |
| Published | May 26, 2026 |
Enter the captcha to get the download link:
Frequently Asked Questions
How many DS1803 devices can share a single 2-wire interface?
Up to 8 DS1803’s can share the same 2-wire interface using the three dedicated address pins (A0, A1, and A2).
What is the initial wiper position when the device powers up?
Since it is a volatile device, upon power-up, the DS1803 wipers’ position will automatically be set to position 00h, corresponding to the low-end terminals.
What voltage and temperature range must the user consider for operation?
The device supports operation using 3V or 5V power supplies over an industrial temperature range of -40°C to +85°C.
Which pins are responsible for serial data transfer, and what role does the master play?
Data is transferred using the SDA (Serial Data I/O) and SCL (Serial Clock Input) pins. The master device controls the message by generating the serial clock and controlling bus access.