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Status

Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 440kB) Download   E-Mail

Description

The DS1808 is a dual-channel, digitally controlled, log-taper potentiometer. Each potentiometer is comprised of 32 wiper terminal positions plus a mute position. The device has three accessible potentiometer terminals that include the high-side terminal (H), the low-side terminal (L), and the wiper terminal (W). The resolution of the DS1808 is shown in Figure 8 and represents 1dB per step for the first 12 taps, 2dB per step for the next 12 taps and 3dB per step for the bottom 8 taps, providing a total attenuation range of 60dB. The mute position of the DS1808 provides greater than 90dB of attenuation. The wiper position on the resistor ladder is selected via a 6-bit register, whose value is controlled by the industry-standard 2-wire interface. The interface consists of two control signals: SDA and SCL. The DS1808 is available in a standard 45kΩ resistor value. The DS1808 is specified to operate over the industrial temperature range (-40°C to +85°C) and is available in the 16-pin SOIC package. The DS1808 was designed for low-cost, stereo volume control applications. The device is specified to operate from ±12V ±10% supplies and accept a maximum input signal range of ±12V.

Key Features

Two 32-position log-tapers 60dB attenuation range: -1dB per step (12 taps) -2dB per step (12 taps) -3dB per step (8 taps) -90dB low-end attenuation 2-Wire Interface Control Power Supply: Dual ±12V Maximum Voltage Across Potentiometers: ±12V Standard Resistance Value: 45kΩ Packages: 16-Pin SOIC Operating Temperature: -40°C to +85°C

Diagram

Block Diagram

Application Notes

Application Note 160: Using the DS1808 in Audio Applications - DS1808 Application Note 4051: Using an Analog Voltage to Control a Digital Potentiometer - DS1808

Design Guides

Digital Potentiometers (PDF)

Reliability Reports

Reliability Report: DS1808.pdf

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: 1-4 of 4

DS1808	Notes	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1808Z-050/T&R	50kohms			Active	SOIC(N);16 pin;61.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1808Z-050	50kohms			Active	SOIC(N);16 pin;61.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1808Z-050+	50kohms			Active	SOIC(N);16 pin;61.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1808Z-050+T&R	50kohms			Active	SOIC(N);16 pin;61.9 mm² Outline Drawing: 21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

More Information

New Product Press Release 2001-08-23

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