DS1881E-045 MAXIM [Maxim Integrated Products], DS1881E-045 Datasheet

DS1881E-045

Manufacturer Part Number

DS1881E-045

Description

Dual NV Audio Taper Digital Potentiometer

Manufacturer

MAXIM [Maxim Integrated Products]

Datasheet

1.DS1881E-045.pdf (16 pages)

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The DS1881 is a dual, nonvolatile (NV) digital poten-

tiometer designed to operate in audio systems that

require 5V signal levels. The potentiometer settings can

be stored in EEPROM so that they are retained when the

power is cycled. The DS1881 has separate supplies for

the potentiometers (V

ry (V

detector allows the wiper position to change when there

is no voltage across the potentiometer. The device is

also designed to minimize crosstalk, and the two digital

potentiometers provide 0.5dB channel-to-channel match-

ing to prevent volume differences between channels.

Total harmonic distortion (THD) is also minimal as long

as the wiper drives a high-impedance load.

Two attenuation configuration options provide optimum

flexibility for the specific application. Configuration

Option 1 provides 63 logarithmic tapered steps (0dB to

-62dB, 1dB/step) plus a mute setting. Configuration

Option 2 has 32 logarithmic steps plus mute and pro-

vides software compatibility with the DS1808. When

Configuration Option 2 is used in combination with the

16-pin SO package, the DS1881 is both software and pin

compatible with the DS1808 in 5V applications.

Rev 0; 1/06

Purchase of I

license under the Philips I

Standard Specification as defined by Philips.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

TOP VIEW

Notebook and PC Audio

Portable Audio Equipment

Car Stereo

Consumer Audio/Video

). For clickless/popless operation, a zero-crossing

Dual NV Audio Taper Digital Potentiometer

C components from Maxim Integrated Products, Inc., or one of its sublicensed Associated Companies, conveys a

GND

N.C.

TSSOP/SO

General Description

) and the communication circuit-

C Patent Rights to use these components in an I

DS1881

Pin Configuration

Applications

______________________________________________ Maxim Integrated Products

SCL

SDA

♦ Dual, Audio Log Taper Potentiometers

♦ Low THD+N and Crosstalk

♦ 5V Analog Supply (Independent of Digital Supply)

♦ 3V to 5V Digital Supply Range

♦ Potentiometer Settings Configurable as NV

♦ Zero-Crossing Detector Eliminates Switching

♦ Two User-Configurable Attenuation Options

♦ Configuration Option 1: 63 Positions Provide 1dB

♦ Configuration Option 2: (Software-Compatible

♦ I

♦ Three Address Pins Allow Up to 8 Devices on

♦ 45kΩ Potentiometer End-to-End Resistance

♦ Industrial Temperature Range (-40°C to +85°C)

♦ 16-Pin TSSOP or SO Package

+Denotes lead-free package.

Typical Operating Circuit appears at end of data sheet.

DS1881E-045+

DS1881E-045+T&R -40°C to +85°C

DS1881Z-045+

DS1881Z-045+T&R -40°C to +85°C

or Volatile

Noise

Attenuation Steps from 0dB to -62dB Plus Mute

with the DS1808): 33 Positions Plus Mute as

Follows

C*-Compatible Serial Interface

C Bus

Positions 0–12: 1dB per Step for 12 Steps

Positions 13–24: 2dB per Step for 12 Steps

Positions 25–32: 3dB per Step for 8 Steps

PART

C system, provided that the system conforms to the I

-40°C to +85°C

RANGE

Ordering Information

TEMP

VERSION

(kΩ)

Features

PIN-

PACKAGE

16 TSSOP

(173 mils)

16 TS S OP

( 173 m i l s)

Tap e- and - Reel

16 S O

( 150 m i l s)

16 S O

( 150 m i l s)

Tap e- and - Reel

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