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MAX11041 Wired Remote Controller

Maxim's MAX11041 wired remote controller is a total solution over a single-wire interface

Maxim - MAX11041Maxim's MAX11041 wired remote controller converts up to 30 different pushbuttons into an I²C register. Together with low-cost pushbutton switches and 1% resistors, the MAX11041 is a total solution over a single-wire interface. A wired remote controller easily piggybacks to a standard 3.5 mm headphone jack using a fourth contact or one of the audio signals.

To conserve battery life, the MAX11041 consumes only 5 µA (typ) while reading key presses in real time without microprocessor (µP) polling. The device sends the debounced key press along with key duration to the application processor over the I²C interface. An 8-word FIFO buffer records up to four key press events to allow plenty of time for the application processor to respond to the MAX11041.

The MAX11041 includes ±15 kV ESD protection devices on the FORCE and SENSE inputs to ensure IEC 61000-4-2 compliance without any external ESD devices.

The MAX11041 is available in a 12-pin TQFN package. The device is specified over the extended temperature range (-40°C to +85°C).

  • Detects up to 30 different keys and jack insertion/removal
  • Works with either 32 Ω or 16 Ω headphones
  • Adds remote-control functionality to devices using a simple resistor and switch array
  • Low-power operation consuming a supply current of only 5 µA typical
  • Works with standard 2.5 mm or 3.5 mm 4-pin headphone jacks
  • Supports hold function to lockout keys
  • 100 kHz/400 kHz I²C interface
  • Single 1.6 V to 3.6 V supply voltage range
  • ± ESD protection (IEC 61000-4-2)

  • Digital still cameras
  • Keyboard encoder for slider, flip, and other cell phones
  • MP3, CD, and DVD players
  • Multimedia controls for multimedia-enabled cell phones
  • Multimedia desktop speakers
  • PDA accessory keyboards
  • PDAs
  • Portable game consoles
  • Portable media players

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