MAX5440 Stereo Volume Control With Rotary Encoder Interface

The MAX5440 dual, 40k logarithmic taper Volume Control features a debounced up/down Interface for use with a simple rotary encoder without using a Microcontroller (C). Each potentiometer has 32 log-spaced tap points with a buffered wiper output and replaces 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 specifies volume or balance control. Five integrated LED Drivers indicate volume level or balance settings, depending on the status of the mode indicator.
The MAX5440 includes debounced pushbutton inputs for mute and mode. 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. A click-and-pop suppression feature minimizes the audible noise generated by wiper transitions. The MAX5440 provides a nominal temperature coefficient of 35ppm/C end-to-end and 5ppm/C, ratiometrically. The MAX5440 is available in a 24-pin SSOP package and is specified for operation over the -40C to +85C extended temperature range.
By Maxim Integrated Products
Part Manufacturer Description Datasheet Samples
MAX5440EAG Maxim Integrated Products Rotary Position Encoder
MAX5440EAG+ Maxim Integrated Products Rotary Position Encoder,
MAX5440EAG+T Maxim Integrated Products Rotary Position Encoder
MAX5440 's PackagesMAX5440 's pdf datasheet

MAX5440 Pinout, Pinouts
MAX5440 pinout,Pin out
This is one package pinout of MAX5440,If you need more pinouts please download MAX5440's pdf datasheet.

MAX5440 Application circuits
MAX5440 circuits
This is one application circuit of MAX5440,If you need more circuits,please download MAX5440's pdf datasheet.

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