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DS1881 Dataheets PDF



Part Number DS1881
Manufacturers Maxim Integrated Products
Logo Maxim Integrated Products
Description Dual NV Audio Taper Digital Potentiometer
Datasheet DS1881 DatasheetDS1881 Datasheet (PDF)

www.DataSheet4U.com Rev 0; 1/06 Dual NV Audio Taper Digital Potentiometer General Description The DS1881 is a dual, nonvolatile (NV) digital potentiometer 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 (VCC) and the communication circuitry (VDD). For clickless/popless operation, a zero-crossing detector allows the wi.

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www.DataSheet4U.com Rev 0; 1/06 Dual NV Audio Taper Digital Potentiometer General Description The DS1881 is a dual, nonvolatile (NV) digital potentiometer 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 (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 device is also designed to minimize crosstalk, and the two digital potentiometers provide 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 provides 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. ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ Features 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 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 DS1881 ♦ ♦ ♦ ♦ ♦ Applications Notebook and PC Audio Portable Audio Equipment Car Stereo Consumer Audio/Video Ordering Information PART DS1881E-045+ Pin Configuration TOP VIEW GND 1 A2 2 A1 3 N.C. 4 A0 5 W0 6 L0 7 H0 8 TEMP RANGE -40°C to +85°C VERSION PIN(kΩ) PACKAGE 45 16 TSSOP (173 mils) 16 TSSOP (173 mils) Tape-and-Reel 16 SO (150 mils) 16 SO (150 mils) Tape-and-Reel + 16 VDD 15 VCC 14 SCL DS1881E-045+T&R -40°C to +85°C 45 DS1881 13 SDA 12 CE 11 W1 10 H1 9 L1 DS1881Z-045+ -40°C to +85°C 45 DS1881Z-045+T&R -40°C to +85°C 45 +Denotes lead-free package. TSSOP/SO Typical Operating Circuit appears at end of data sheet. Purchase of I2C components from Maxim Integrated Products, Inc., or one of its sublicensed Associated Companies, conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips. ______________________________________________ Maxim Integrated Products 1 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. Dual NV Audio Taper Digital Potentiometer DS1881 ABSOLUTE MAXIMUM RATINGS Voltage on VDD, SDA, and SCL Relative to GND .....-0.5V to +6.0V Voltage on A2, A1, A0, and CE Relative to GND .................-0.5V to (VDD + 0.5V), not to exceed +6.0V Voltage on VCC Relative to GND ...........................-0.5V to +6.0V Voltage on H1, H0, W1, W0, L1, and L0 Relative to GND...............................................................-0.5V to +6.0V Maximum Resistor Current .................................................±3mA Operating Temperature Range ...........................-40°C to +85°C Programming Temperature Range .........................0°C to +70°C Storage Temperature Range .............................-55°C to +125°C Soldering Temperature...................See J-STD-020 Specification Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. RECOMMENDED OPERATING CONDITIONS (TA = -40°C to +85°C) PARAMETER Digital Supply Voltage Analog Supply Range Potentiometer Voltages Wiper Current SYMBOL VDD VCC CONDITIONS (Notes 1, 2) (Notes 1, 2) MIN 2.7 4.5 0 TYP MAX 5.5 5.5 5.5 ±1 UNITS V V V mA DC ELECTRICAL CHARACTERISTICS (VDD = +2.7V to +5.5V, VCC = +4.5V to +5.5V, TA = -40°C to +85°C.) PARAMETER Digital Supply Current Analog Supply Current Input Logic 0 (CE, SDA, SCL, A0, A1, A2) Input Logic 1 (CE, SDA, SCL.


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