DS1882E-050+T&R Maxim Integrated Products, DS1882E-050+T&R Datasheet

DS1882E-050+T&R

Manufacturer Part Number

DS1882E-050+T&R

Description

IC POT DIGIT DL LOG 50K 16TSSOP

Manufacturer

Maxim Integrated Products

Datasheet

1.DS1882Z-050TR.pdf (15 pages)

Specifications of DS1882E-050+T&R

Taps

Resistance (ohms)

45K

Number Of Circuits

Temperature Coefficient

750 ppm/°C Typical

Memory Type

Non-Volatile

Interface

I²C, 2-Wire Serial

Voltage - Supply

4.5 V ~ 7 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

16-TSSOP

Resistance In Ohms

45K

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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The DS1882 is a dual, nonvolatile (NV) digital poten-

tiometer designed to operate in audio systems that

accomodate up to ±7V signal levels. The potentiometer

settings can be stored in EEPROM so that they are

retained when the power is cycled. The DS1882 has

separate supplies for the potentiometers (V

communication circuitry (V

operation, a zero-crossing detector allows the wiper

position to change when there is no voltage across the

potentiometer. The DS1882 is also designed to mini-

mize crosstalk, and the two digital potentiometers pro-

vide 0.5dB channel-to-channel matching 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 DS1882 is both software and pin

compatible with the DS1808 in 5V applications.

Rev 0; 6/06

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

GND

V-

TSSOP/SO

General Description

DS1882

Dual Log Audio Digital Potentiometer

Pin Configuration

). For clickless/popless

Applications

______________________________________________ Maxim Integrated Products

SCL

SDA

) and the

♦ Dual, Audio Log Taper Potentiometers

♦ Low THD+N and Crosstalk

♦ ±7V Analog Supply (Independent of Digital

♦ 5V Digital Supply

♦ Potentiometer Settings Configurable as

♦ 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.

DS1882E-050+

DS1882E-050+T&R -40°C to +85°C

DS1882Z-050+

DS1882Z-050+T&R -40°C to +85°C

Supply)

Nonvolatile 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

-40°C to +85°C

RANGE

Ordering Information

TEMP

VERSION

(kΩ)

Features

PIN-

PACKAGE

16 TSSOP

(173 mils)

16 TS S O P

( 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

Related parts for DS1882E-050+T&R

DS1882E-050+T&R Summary of contents

Page 1

... C*-Compatible Serial Interface ♦ Three Address Pins Allow Devices Bus ♦ 45kΩ Potentiometer End-to-End Resistance ♦ Industrial Temperature Range (-40°C to +85°C) Applications ♦ 16-Pin TSSOP or SO Package PART DS1882E-050 DS1882E-050+T&R -40°C to +85° SCL DS1882Z-050+ 13 SDA 12 CE DS1882Z-050+T&R -40°C to +85°C ...

Page 2

Dual Log Audio Digital Potentiometer ABSOLUTE MAXIMUM RATINGS Voltage SDA, and SCL Relative to GND .....-0.5V to +6. Relative Voltage on A2, A1, A0, and to GND .................-0. 0.5V), not to exceed ...

Page 3

Dual Log Audio Digital Potentiometer ANALOG POTENTIOMETER CHARACTERISTICS (V = +4.5V to +5.5V +4.5V to +7.0V -4.5V to -7.0V PARAMETER End-to-End Resistance End-to-End Resistance Tolerance Ratiometric Temperature Coefficient End-to-End Resistance Temperature Coefficient Wiper ...

Page 4

Dual Log Audio Digital Potentiometer NV MEMORY CHARACTERISTICS (V = +4.5V to +5.5V +4.5V to +7.0V -4.5V to -7.0V PARAMETER Writes Note 1: All voltages are referenced to ground. Note 2: The value ...

Page 5

Dual Log Audio Digital Potentiometer ( +5.0V -5.0V +25°C POTENTIOMETER 1 (CONFIGURATON 2) ATTENUATION vs. SETTING 0 -20.0 -40.0 -60.0 -80.0 -100 ...

Page 6

Dual Log Audio Digital Potentiometer PIN NAME 1 GND Ground Address Inputs. Inputs A0, A1, and A2 determine the Negative Analog Voltage Supply Address Input. ...

Page 7

Dual Log Audio Digital Potentiometer Detailed Description The DS1882 is a dual-channel, digitally controlled, audio potentiometer. The Block Diagram illustrates the features of the DS1882. The following sections discuss these features in detail. Potentiometer Configurations The DS1882 potentiometers have two ...

Page 8

Dual Log Audio Digital Potentiometer Table 2. Configuration Option 2 TAP POSITION ATTENUATION (dB ...

Page 9

Dual Log Audio Digital Potentiometer Potentiometer Wiper Setting are the values of the two MSBs of the Command Byte, then the wiper settings of the poten- tiometers are to be programmed. The lower 6 LSBs of ...

Page 10

Dual Log Audio Digital Potentiometer Configuration Register entered as the value of the two MSBs of the Command Byte, then the Configuration Register modified. The three LSBs of the Configuration CONFIGURATION REGISTER Factory Default: ...

Page 11

Dual Log Audio Digital Potentiometer Interface for the DS1882 The CE pin serves as a communication enable pin. When active (CE = 0), the inputs SDA and SCL are rec- ognized by the device. If inactive (CE ...

Page 12

Dual Log Audio Digital Potentiometer Writing Command Byte Values An example of writing to the DS1882 is shown in Figure 2. The DS1882 has one write command that is used to change the Potentiometer Wiper Setting Registers and the Configuration ...

Page 13

Dual Log Audio Digital Potentiometer setup time (see Figure 4) before the next rising edge of SCL during a bit read. The device shifts out each bit of data on SDA at the falling edge of the previous SCL pulse, ...

Page 14

Dual Log Audio Digital Potentiometer Byte Write: A byte write consists of 8 bits of informa- tion transferred from the master to the slave (most sig- nificant bit first) plus a 1-bit acknowledgement from the slave to the master. The ...

Page 15

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2006 Maxim Integrated Products is a registered trademark of Dallas Semiconductor Corporation ...

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