DS1881E-050+ Maxim Integrated Products, DS1881E-050+ Datasheet

IC POT DIGIT DL NV 50K 16TSSOP

DS1881E-050+

Manufacturer Part Number
DS1881E-050+
Description
IC POT DIGIT DL NV 50K 16TSSOP
Manufacturer
Maxim Integrated Products
Datasheet
1.DS1881Z-050.pdf (16 pages)

Specifications of DS1881E-050+

Taps
64
Resistance (ohms)
45K
Number Of Circuits
2
Temperature Coefficient
750 ppm/°C Typical
Memory Type
Non-Volatile
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 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
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
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
DD
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
GND
N.C.
W0
H0
A2
A1
A0
L0
1
2
3
4
5
6
7
8
CC
+
TSSOP/SO
General Description
) and the communication circuit-
DS1881
Pin Configuration
16
15
14
13
12
11
10
Applications
9
______________________________________________ Maxim Integrated Products
V
V
SCL
SDA
CE
W1
H1
L1
DD
CC
♦ 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-050+
DS1881E-050+T&R -40°C to +85°C
DS1881Z-050+
DS1881Z-050+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
I
2
2
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
-40°C to +85°C
RANGE
Ordering Information
TEMP
VERSION
(kΩ)
45
45
45
45
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
1

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DS1881E-050+ 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 DS1881E-050 DS1881E-050+T&R -40°C to +85° SCL DS1881Z-050+ 13 SDA DS1881Z-050+T&R -40°C to +85°C ...

Page 2

Dual NV Audio Taper 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 ...

Page 3

Dual NV Audio Taper Digital Potentiometer ANALOG POTENTIOMETER CHARACTERISTICS (V = +2.7V to +5.5V +4.5V to +5.5V PARAMETER End-to-End Resistance End-to-End Resistance Tolerance Ratiometric Temperature Coefficient End-to-End Resistance Temperature Coefficient Wiper Resistance Absolute Attenuation Tolerance ...

Page 4

Dual NV Audio Taper Digital Potentiometer NV MEMORY CHARACTERISTICS (V = +2.7V to +5.5V +4.5V to +5.5V PARAMETER Writes Note 1: All voltages are referenced to ground. Note 2: The value of V should never ...

Page 5

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

Page 6

Dual NV Audio Taper Digital Potentiometer ( +5.0V +25°C THD+N vs. FREQUENCY (0dB) 0.0018 0.0016 0.0014 0.0012 0.0010 0.0008 0.0006 0.0004 0.0002 0 0.01 0.1 1 FREQUENCY (kHz) PIN NAME 1 GND ...

Page 7

Dual NV Audio Taper Digital Potentiometer SDA SCL INTERFACE A0 CE POTENTIOMETER 0 VALUE H0 W0 ZERO-CROSSING L0 DETECTOR UPDATE _____________________________________________________________________ V DD CONFIGURATION REGISTER POTENTIOMETER SETTING DS1881 REGISTERS POTENTIOMETER 1 DECODER VALUE ZERO-CROSSING DETECTOR ...

Page 8

Dual NV Audio Taper Digital Potentiometer Detailed Description The DS1881 is a dual-channel, digitally controlled, audio potentiometer. The Block Diagram illustrates the features of the DS1881. The following sections discuss these features in detail. Potentiometer Configurations The DS1881 potentiometers have ...

Page 9

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

Page 10

Dual NV Audio Taper 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 ...

Page 11

Dual NV Audio Taper 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 ...

Page 12

Dual NV Audio Taper Digital Potentiometer Interface for the DS1881 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 ...

Page 13

Dual NV Audio Taper Digital Potentiometer Writing Command Byte Values An example of writing to the DS1881 is shown in Figure 2. The DS1881 has one write command that is used to change the Potentiometer Wiper Setting registers and the ...

Page 14

Dual NV Audio Taper 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 ...

Page 15

Dual NV Audio Taper 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. ...

Page 16

... 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. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products is a registered trademark of Dallas Semiconductor Corporation. ...

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