DS1882 Dual Log Audio Digital Potentiometer

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The DS1882 is a dual, nonvolatile (NV) digital potentiometer 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_CC) and the communication circuitry (V_DD). 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 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 DS1882 is both software and pin compatible with the DS1808 in 5V applications.

Key Features

Applications/Uses

	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
	45k Potentiometer End-to-End Resistance
	Industrial Temperature Range (-40°C to +85°C)
	16-Pin TSSOP or SO Package

	Car Stereo
	Consumer Audio/Video
	Notebook and PC Audio
	Portable Audio Equipment

Key Specifications: Digital Potentiometers

Part Number

Taper

POTs Per Pkg.

Control Interface

Wiper Memory

Number of Steps

End-to-End Resistance (kΩ)

Res. Tol. (%)

Temp. Coeff. (typ)(ppm/°C)

Wiper Resistance (typ) (Ω)

Max. Idle State Supply Current @5V (µA)

Applications

Features

Dual Supply Voltage (±V)

RoHS Available

Industry Qualified

Package

Operating Temp. Range (°C)

Price^**

DS1882

Log

I²C

Non-Volatile

160

200

•	Audio Control

•	Car Stereo

•	Notebook and PC Audio

•	Portable Audio

•	Portable Consumer

•	+/-7V Signal Levels

•	EEPROM Wiper Memory

•	Low THD+N and Crosstalk

•	User-Configurable Attenuation Options

•	Zero-Crossing Detector

Yes

Automotive - General

SOIC/16
TSSOP/16

-40 to +85

$1.16 @ 1k

See All Digital Potentiometers (121)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.