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Status

Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 228kB) Download   E-Mail

Description

The MAX5486 dual 40kΩ logarithmic taper volume control features a debounced pushbutton up/down interface that controls volume and balance in audio applications. Each potentiometer has 32 log-spaced tap points with a buffered wiper output to replace mechanical potentiometers. An integrated bias generator provides the required ((VDD + VSS) / 2) bias voltage, eliminating the need for costly external op-amp circuits in unipolar audio applications. A mode-indicator LED output indicates volume or balance control. Five integrated LED drivers indicate volume level or balance settings, depending on the status of the mode indicator. Use the MAX5486 digital inputs with momentary contact single-pole/single-throw (SPST) pushbutton switches. Each input includes internal debounced circuitry and a pullup resistor to VLOGIC. The MAX5486 advances the wiper setting once per button push. Maxim's proprietary SmartWiper™ control eliminates the need for a microcomputer to increase the wiper transition rate. The accelerated auto-advance feature provides a wiper-changing rate at 4Hz for holding the control input low for more than 250ms and at 8Hz after 500ms and then at 11Hz after 1000ms (see Table 2 in the full data sheet.) All of the MAX5486's pushbutton inputs are debounced. The mute input allows a single pushbutton to change between volume control and the -90dB (typ) mute setting. The mode input toggles between volume and balance control. The click-and-pop suppression feature minimizes the audible noise generated by wiper transitions. The typical total harmonic distortion plus noise (THD+N) for the device is 0.003%. The MAX5486 provides a nominal temperature coefficient of 35ppm/°C end-to-end and 5ppm/°C ratiometrically and a nominal resistance of 40kΩ per potentiometer. The MAX5486 is available in a 24-pin TSSOP package and is specified for operation over the -40°C to +85°C extended temperature range.

Key Features		Applications/Uses
Debounced Pushbutton Interface SmartWiper Control Advances Wiper Rate Low-Power Wiper Buffers Provide 0.003% THD Bias Generator Eliminates External Op Amps Five-Segment LED Volume/Balance Indicator Clickless Switching Logarithmic Taper Volume Control with (31) 2dB Steps Single +2.7V to +5.5V or Dual ±2.7V Supply Voltage Operation Power-On Reset to -12dBFS Wiper Position MUTE-bar Function Toggles to 90dB (typ) Low 1µA Shutdown Supply Current 40kΩ End-to-End Fixed Resistance Value Small, 24-Pin TSSOP Package		Automotive Rear-Seat Multimedia Desktop Speakers Docking Stations Home-Theater Speakers Portable Media Players

Diagram

Typical Operating Circuit

Application Notes

Application Note 161: Using a DS1802 Push-Button Digital Potentiometer to Create an Audio Preamp with Attenuator - MAX5486 Application Note 4262: Improve Stereo Performance with Active Biasing - MAX5486

Design Guides

Audio (PDF) Digital Potentiometers (PDF)

Reliability Reports

Reliability Report: MAX5486.pdf Show FIT data for: MAX5486

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-2 of 2

MAX5486	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5486EUG+			Active	TSSOP;24 pin;52.4 mm² Outline Drawing: 21-0066 (PDF) Land Pattern: 90-0118 (PDF) Use pkgcode/variation: U24+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5486EUG+T			Active	TSSOP;24 pin;52.4 mm² Outline Drawing: 21-0066 (PDF) Land Pattern: 90-0118 (PDF) Use pkgcode/variation: U24+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

More Information

New Product Press Release 2006-11-15  Product Ad: Download

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