MAX5440EAG+

The MAX5440EAG+ is a stereo volume control with rotary encoder interface in 24 pin SSOP package. The dual, 40Kohm logarithmic taper volume control features a debounced up/down interface for use with a simple rotary encoder without using a microcontroller. Each potentiometer has 32 log spaced tap points with a buffered wiper output and replaces mechanical potentiometers. An integrated bias generator provides required ((VDD + VSS)/2) bias voltage, eliminating need for costly external op-amp circuits in unipolar audio applications. A mode indicator LED output specifies volume or balance control. 5 integrated LED drivers indicate volume level or balance settings, depending on status of mode indicator. It includes debounced pushbutton inputs for mute and mode. The mode input toggles between volume and balance control. A click and pop suppression features minimizes audible noise generated by wiper transitions.

• Supply voltage range is 2.7V to 5.5V, ± 2.7V
• Operating temperature range from -40°C to 85°C
• Logarithmic taper volume control with (31) 2dB steps
• Low power wiper buffers provide 0.003% THD
• Low 0.5μA shutdown supply current
• Integrated bias voltage generator
• 5 segment LED volume/balance indicator
• Clickless switching, power on reset to -12dBFS wiper position
• 40Kohm end to end fixed resistance value
• Mute function toggles to -90dB (typ)

Ứng Dụng

Multimedia, Portable Devices, Consumer Electronics, Signal Processing

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