參數(shù)資料
型號(hào)： DS1882Z-050+T&R
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 1/15頁(yè)
文件大?。?/td> 0K
描述： IC POT DIGIT DL LOG 50K 16SOIC
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
接片： 64
電阻（歐姆）： 45k
電路數(shù)： 2
溫度系數(shù)： 標(biāo)準(zhǔn)值 750 ppm/°C
存儲(chǔ)器類(lèi)型： 非易失
接口： I²C（設(shè)備位址）
電源電壓： 4.5 V ~ 7 V
工作溫度： -40°C ~ 85°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 16-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 16-SOIC
包裝： 帶卷 (TR)
General Description
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 (VCC) and the
communication circuitry (VDD). For clickless/popless
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.
Applications
Notebook and PC Audio
Portable Audio Equipment
Car Stereo
Consumer Audio/Video
Features
Dual, Audio Log Taper Potentiometers
Low THD+N and Crosstalk
±7V Analog Supply (Independent of Digital
Supply)
5V Digital Supply
Potentiometer Settings Configurable as
Nonvolatile or Volatile
Zero-Crossing Detector Eliminates Switching
Noise
Two User-Configurable Attenuation Options
Configuration Option 1: 63 Positions Provide 1dB
Attenuation Steps from 0dB to -62dB Plus Mute
Configuration Option 2: (Software-Compatible
with the DS1808): 33 Positions Plus Mute as
Follows
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
I2C*-Compatible Serial Interface
Three Address Pins Allow Up to 8 Devices on
I2C Bus
45kΩ Potentiometer End-to-End Resistance
Industrial Temperature Range (-40°C to +85°C)
16-Pin TSSOP or SO Package
DS1882
Dual Log Audio Digital Potentiometer
______________________________________________ Maxim Integrated Products
1
16
15
14
13
12
11
10
1
2
3
4
5
6
7
VDD
VCC
SCL
SDA
V-
A1
A2
GND
TOP VIEW
CE
W1
H1
L0
W0
9
8L1
H0
A0
TSSOP/SO
DS1882
+
Pin Configuration
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.
+Denotes lead-free package.
Ordering Information
PART
TEMP
RANGE
VERSION
(kΩ)
PIN-
PACKAGE
DS1882E-050+
-40°C to +85°C
45
16 TSSOP
(173 mils)
DS1882E-050+T&R -40°C to +85°C
45
16 TSSOP
(173 mils)
Tape-and-Reel
DS1882Z-050+
-40°C to +85°C
45
16 SO
(150 mils)
DS1882Z-050+T&R -40°C to +85°C
45
16 SO
(150 mils)
Tape-and-Reel
Typical Operating Circuit appears at end of data sheet.
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