DS1267B

Dual Digital Potentiometer

2-Channel 256-Position Digital Potentiometer Operates from a Single +5V or Dual ±5V Supply


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Description

The DS1267B has two 256-position potentiometers, with wiper positions each set by stored 8-bit values. The DS1267B communicates through a 3-wire serial port interface that drives an internal control logic unit. Multiple DS1267Bs can be linked or daisy-chained for control by a single processor.

The DS1267B dual digital potentiometer replaces the DS1267, which has been discontinued. The device is designed for flexibility, operating from a single +5V or dual ±5V supply. Maximum standby current is only 2µA.

Digital potentiometers improve upon mechanical devices with processor control and programmability, greater reliability and accuracy, and packaging options that facilitate automatic assembly. They are used for signal control in modems and phones, battery charging and control circuitry, tuning and calibration, offset trimming of operational amplifiers, gain control, and power-supply regulation.

DS1267B: Block Diagram DS1267B: Block Diagram Enlarge+

Key Features

  • Two 256-Step (or 8-Bit) Digital Potentiometers
  • Stacking Configures Device as One 512-Step (or 9-Bit) Digital Potentiometer
  • Wipers Digitally Set and Read Through Serial Port
  • 3-Wire Serial Control Interface
  • Operating Ranges
    • Single +5V or ±5V Supplies
    • -40°C to +85°C

Applications/Uses

  • Impedance Matching
  • Mechanical Potentiometer Replacement
  • Offset and Gain Control
  • Programmable Filters, Delays, Time Constant
Part NumberTaperPOTsControl InterfaceWiper MemoryStepsREND-TO-END
(kΩ)
Res. Tol.
(%)
Temp. Coeff.
(ppm/°C)
Wiper Resistance
(Ω)
ICC @5V
(µA)
Package/PinsBudgetary
Price
typtypmaxSee Notes
DS1267B Linear23-Wire Serial SPIVolatile25610207509002
SOIC (W)/16
TSSOP/20
$3.47 @1k
See All Digital Potentiometers (120)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Quality and Environmental Data

Product Reliability Reports: DS1267B.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • DS1267BE-010+
  • DS1267BE-010+T/R
  • DS1267BE-050+
  • DS1267BE-050+T/R
  • DS1267BE-100+
  • DS1267BE-100+T/R
  • DS1267BS-010+
  • DS1267BS-010+T/R
  • DS1267BS-050+
  • DS1267BS-050+T/R
  • DS1267BS-100+
  • DS1267BS-100+T/R
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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