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Maxim > Products > [Digital-to-Analog Converters]  [Digital Potentiometers]  [Audio] 
DS1844
Quad Digital Potentiometer


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 272kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The DS1844 Quad Digital Potentiometer combines four 64-position potentiometers for simultaneous control over four parameters. It is available with standard resistance values of 10kΩ, 50kΩ, and 100kΩ for all four potentiometers, or with mixed values within one DS1844.

The quad potentiometer is intended for any application requiring multiple controls, including voltage, current, audio volume and tone, or LCD contrast and brightness levels. The DS1844 operates in power environments ranging from 2.7V to 5.5V and in industrial thermal environments of -40°C to +85°C.

Digital potentiometers replace mechanical parts with digital accuracy, reliability, and the capability for automatic processor control.

Key Features
  • Four independent, digitally controlled 64-position potentiometers
  • Two interface control options:
    • 5-wire serial
    • 2-wire addressable
  • Standard resistance values: 10kΩ, 50kΩ, 100kΩ
  • Mixed resistor combinations available
  • Operating ranges:
    • 2.7V to 5.5V
    • -40°C to +85°C

Key Specifications:  Digital Potentiometers
Part Number Taper POTs Control Interface Wiper Memory Steps REND-TO-END
(kΩ)		 Res. Tol.
(%)		 Temp. Coeff.
(ppm/°C)		 Wiper Resistance
(Ω)		 ICC @5V
(µA)		 Smallest Available Pckg.
(mm2)		 Price
typ typ max max w/pins See Notes
DS1844  Linear 4 2-Wire or 5-Wire Serial Volatile 64
10
50
100
 20 750 400 40 45 $2.26 @1k
See All Digital Potentiometers (121)

Diagram
DS1844: Block Diagram
Block Diagram

Application Notes
  		• Application Note 3081: How to Increase the Bandwidth of Digital Potentiometers 10x to 100x - DS1844
  		• Application Note 3317: Adding Windows NT/2000/XP Support to the AN3315 Parallel-Port 2-Wire Software - DS1844
  		• Application Note 4051: Using an Analog Voltage to Control a Digital Potentiometer - DS1844

    Design Guides
  		• Digital Potentiometers (PDF)

    Reliability Reports
  		• Reliability Report: DS1844.pdf

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-30 of 30

    DS1844 Notes Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    DS1844-010+  
    		Active PDIP(N);20 pin;217 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P20+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1844-050+  
    		Active PDIP(N);20 pin;217 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P20+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1844-010   10kohms  
    		Active PDIP(N);20 pin;217 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P20-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1844-050   50kohms  
    		Active PDIP(N);20 pin;217 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P20-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1844-100   100kohms  
    		Active PDIP(N);20 pin;217 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P20-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1844-100+  
    		Active PDIP(N);20 pin;217 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P20+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1844S-010   10kohms  
    		Active SOIC(W);20 pin;137 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1844S-050   50kohms  
    		Active SOIC(W);20 pin;137 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1844S-100   100kohms  
    		Active SOIC(W);20 pin;137 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1844S-010/T&R   10kohms  
    		Active SOIC(W);20 pin;137 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1844S-050/T&R   50kohms  
    		Active SOIC(W);20 pin;137 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1844S-100/T&R   100kohms  
    		Active SOIC(W);20 pin;137 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1844S-010+  
    		Active SOIC(W);20 pin;137 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1844S-010+T&R    
    		Active SOIC(W);20 pin;137 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1844S-050+  
    		Active SOIC(W);20 pin;137 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1844S-050+T&R    
    		Active SOIC(W);20 pin;137 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1844S-100+  
    		Active SOIC(W);20 pin;137 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1844S-100+T&R    
    		Active SOIC(W);20 pin;137 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0108 (PDF)
    Use pkgcode/variation: W20+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1844E-010   10kohms  
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1844E-050   50kohms  
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1844E-100   100kohms  
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1844E-010/T&R   10kohms  
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1844E-050/T&R   50kohms  
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1844E-100/T&R   100kohms  
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    DS1844E-010+  
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1844E-010+T&R    
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1844E-050+  
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1844E-050+T&R    
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1844E-100+  
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    DS1844E-100+T&R    
    		Active TSSOP;20 pin;45 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0116 (PDF)
    Use pkgcode/variation: U20+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

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    2005-06-02
    This page last modified: 2009-10-23


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