Part # MAX5440 datasheet

Part Manufacturer: Maxim


Part Description: MAX5440 DS

Part Details:

19-0542; Rev 1; 5/06 Stereo Volume Control with Rotary Encoder Interface MAX5440 General Description Features The MAX5440 dual, 40k logarithmic taper volume con- Logarithmic Taper Volume Control with (31) 2dB trol features a debounced up/down interface for use Steps with a simple rotary encoder without using a microcon-troller (µC). Each potentiometer has 32 log-spaced tap Low-Power Wiper Buffers Provide 0.003% THD points with a buffered wiper output and replaces Single +2.7V to +5.5V or Dual ±2.7V Supply mechanical potentiometers. An integrated bias genera- Voltage Operation tor provides the required ((VDD + VSS) / 2) bias voltage,eliminating the need for costly external op-amp circuits Low 0.5µA Shutdown Supply Current in unipolar audio applications. A mode-indicator LED Integrated Bias Voltage Generator output specifies volume or balance control. Five inte-grated LED drivers indicate volume level or balance set- Five-Segment LED Volume/Balance Indicator tings, depending on the status of the mode indicator. Clickless Switching The MAX5440 includes debounced pushbutton inputsfor mute and mode. The mute input allows a single 40k End-to-End Fixed Resistance Value pushbutton to change between volume control and the Mute Function Toggles to -90dB (typ) -90dB (typ) mute setting. The mode input togglesbetween volume and balance control. A click-and-pop Power-On Reset to -12dBFS Wiper Position suppression feature minimizes the audible noise gener-ated by wiper transitions. The MAX5440 provides anominal temperature coefficient of 35ppm/°C end-to-end and 5ppm/°C, ratiometrically. The MAX5440 is Ordering Information available in a 24-pin SSOP package and is specified for PKG operation over the -40°C to +85°C extended tempera- PART TEMP RANGE PIN-PACKAGE CODE ture range. MAX5440EAG -40°C to +85°C 24 SSOP A24-1 Applications Stereo Volume Control Desktop Speakers Typical Operating Circuit Multimedia Docking Stations Set-Top Boxes VDD VLOGIC Automotive Back-Seat Multimedia VLOGIC Pin Configuration

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MAX5440.pdf Datasheet