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Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 832kB) Download   E-Mail

Description

Like the DS1801, the DS1802 consists of two 65-position, 45kΩ digital potentiometers with logarithmic resistance properties incrementing 1dB per step. It can be operated under automatic software control via a serial 3-wire interface where wiper settings are written with 8-bit words, or under pushbutton control with simple contact closure. The part can be used in either 3V or 5V environments and anywhere within the industrial temperature range of -40°C to +85°C. The DS1802 supports daisy-chaining with other devices under single-processor control. In addition, the DS1802 features four contact closure points for pushbutton control. When combined with mode control, this allows eight different pushbutton control functions. Secondly, the DS1802's potentiometers can be controlled separately or in stereo mode control where wipers from both pots are positioned together from one control input. The DS1802 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 low power while providing digital accuracy and reliability under flexible, automatic processor control.

Key Features

Two digitally controlled, 65-position potentiometers Ultra low-power consumption Software and hardware controlled mute Digital or mechanical pushbutton wiper control Potentiometers can be linked for stereo control Logarithmic resistive characteristics (1dB per step) Zero-crossing detection to eliminate noise Serial port 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

Diagram

Block Diagram

Application Notes

Application Note 161: Using a DS1802 Push-Button Digital Potentiometer to Create an Audio Preamp with Attenuator - DS1802 Application Note 234: Calculate Ratiometric Outputs of the Log Pot DS1802 - DS1802 Application Note 2119: Audio Characterization Report for the DS1802 Dual Digital Audio Potentiometer - DS1802

Design Guides

Digital Potentiometers (PDF)

Reliability Reports

Request Reliability Report for: DS1802

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * 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: 1-10 of 10

DS1802	Notes	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1802K				Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
DS1802	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
DS1802+	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: Lead Free Materials Analysis
DS1802S/T&R	50kohms			Active	SOIC(W);20 pin;137 mm² Outline Drawing: 21-0042 (PDF) Land Pattern: 90-0108 (PDF) Use pkgcode/variation: W20-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1802S	50kohms			Active	SOIC(W);20 pin;137 mm² Outline Drawing: 21-0042 (PDF) Land Pattern: 90-0108 (PDF) Use pkgcode/variation: W20-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1802S+	50kohms			Active	SOIC(W);20 pin;137 mm² Outline Drawing: 21-0042 (PDF) Land Pattern: 90-0108 (PDF) Use pkgcode/variation: W20+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1802E	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
DS1802E/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
DS1802E+	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: Lead Free Materials Analysis
DS1802E+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: Lead Free Materials Analysis

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