Dual Audio Taper Potentiometer

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The 1801 Dual Audio Taper Potentiometer consists of two 65-position, 45kΩ digital potentiometers with logarithmic resistance properties incrementing 1dB per step.

The DS1801 operates with automatic software control via a serial 3-wire interface, where wiper settings are written with 8-bit words. The part can be used in either 3V or 5V environments and anywhere within the industrial temperature range of -40°C to +85°C. Also enabling flexible design possibilities, the DS1801 supports daisy-chaining with devices under single-processor control.

The DS1801 provides high-performance audio volume and tone control in most applications where mechanical potentiometers are used, including CD players, guitar amplifiers, and sound boards. Digital potentiometers consume very little power while providing digital accuracy and reliability under flexible, automatic processor control.
DS1801: Block Diagram DS1801: Block Diagram Enlarge+

Key Features

  • Two digitally controlled, 65-position potentiometers
  • Ultra low-power consumption
  • Logarithmic resistive characteristics (1dB per step)
  • Zero-crossing detection to eliminate noise
  • Three-wire communication
  • Can be daisy-chained for single-processor, multidevice designs
  • Operating temperature range: -40°C to +85°C
  • Operating voltage range: 3V or 5V
  • Resistance available: 45kΩ
Part NumberTaperPOTsControl InterfaceWiper MemoryStepsREND-TO-END
Res. Tol.
Temp. Coeff.
Wiper Resistance
typtypmaxSee Notes
DS1801 Log23-Wire SerialVolatile64452075040050
SOIC (W)/16
$4.04 @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.

Technical Documents

App Note 3287 White-LED Driver Provides 64-Step Logarithmic Dimming

Quality and Environmental Data

Product Reliability Reports: DS1801.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

Temperature Family by Product Type
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.

Quality Management System >
Environmental Management System >


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