DS3903:Triple 128-Position Nonvolatile Digital Potentiometer

Lowest Cost Nonvolatile Triple Potentiometer Ideal for Automating Power-Supply Calibration Eliminates Manual Factory Calibration Costs

The DS3903 contains three nonvolatile (NV) low temperature coefficient digital potentiometers, which can be accessed through a 2-wire bus. The DS3903 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.

Key Features
  • Three 128-Position Linear Potentiometers (Two 10kΩ, One 100kΩ)
  • NV Wiper Storage
  • Low End-to-End Temperature Coefficient
  • Operates on an Industry-Standard 2-Wire Bus
  • Write-Protect Pin
  • Supply Range: 3V or 5V
  • Operating Temperature Range: -40°C to +85°C
  • Packaging: 20-Pin TSSOP
DS3903: Typical Operating Circuit
DS3903: Typical Operating Circuit
Applications/Uses
  • A Small and Low-Cost Replacement for Mechanical Potentiometers
  • Fiber Optic Transceiver Modules
  • Mobile Phones and PDAs
  • Portable Electronics
  • Power Supply Calibration
DataSheet
titleDownload file
DS3903 Data SheetDS3903.pdf
Parametrics
Part NumberTaperPOTsControl InterfaceWiper MemoryStepsREND-TO-END
(kΩ)
Res. Tol.
(%)
Temp. Coeff.
(ppm/°C)
Wiper Resistance
(Ω)
ICC @5V
(µA)
Package/PinsBudgetary
Price
typtypmaxSee Notes
DS3903Linear32-Wire AddressableNon-Volatile12810+10+9020300250250TSSOP/20$1.16 @1k
Quality and Environmental Data
Related Products
  • DS1846:NV Tri-Potentiometer, Memory and MicroMonitor
Ordering Information
Part NumberNotesStatusRecommended ReplacementPackageTempRoHS
DS3903E-02010k/100kohmsNo Longer AvailableDS3903E-020+TSSOP,;20 pin;45.2 mm²-40°C to +85°CNo
DS3903E-020+10k/100kohmsActiveTSSOP,;20 pin;45.2 mm²-40°C to +85°CLead Free
DS3903E-020+T&R10k/100kohmsActiveTSSOP,;20 pin;45.2 mm²-40°C to +85°CLead Free
DS3903E-020/T&R10k/100kohmsNo Longer AvailableDS3903E-020+T&RTSSOP,;20 pin;45.2 mm²-40°C to +85°CNo
DS3903E-020/WNo Longer AvailableTSSOP,;20 pin;45.2 mm²-40°C to +85°CNo
DS3903.pdf DS3903
DS3903.pdf DS3903
DS3903.pdf DS3903
Reduce the Chances of Human Error: Part 2, Super Amps and Filters for Analog Interface MAX5492
Adding Windows NT/2000/XP Support to the AN3315 Parallel-Port 2-Wire Software DS3904
Writing Parallel-Port 2-Wire Software in C DS3904
Using Spare NV Digital Pots as NV Digital Configuration Bits DS3903
Using Digital Potentiometers in Adjustable Step-Down DC-DC Converter Designs DS3903
DS3903.pdf DS3903
DS3903.pdf DS3903