MAX11041_10 Datasheet, PDF (1/17 Pages) Maxim Integrated Products – Wired Remote Controller

19-3984; Rev 3; 1/10
Wired Remote Controller
General Description
The 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 3.5mm headphone jack using a fourth
contact or one of the audio signals.
To conserve battery life, the MAX11041 consumes only
5µA (typ) while reading keypresses in real time without
microprocessor (µP) polling. The device sends the
debounced keypress along with key duration to the
application processor over the I²C interface. An 8-word
FIFO buffer records up to four keypress events to allow
plenty of time for the application processor to respond
to the MAX11041.
The MAX11041 includes ±15kV 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).
Applications
Features
o Detect Up to 30 Different Keys and Jack
Insertion/Removal
o Works with Either 32Ω or 16Ω Headphones
o Adds Remote-Control Functionality to Devices
Using a Simple Resistor and Switch Array
o Low-Power Operation Consuming a Supply
Current of Only 5µA (typ)
o Works with Standard 2.5mm or 3.5mm 4-Pin
Headphone Jacks
o Supports Hold Function to Lockout Keys
o 100kHz/400kHz I²C Interface
o Single 1.6V to 3.6V Supply Voltage Range
o ±15kV ESD Protection (IEC 61000-4-2)
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX11041ETC+
-40°C to +85°C
12 TQFN-EP*
*EP = Exposed pad.
+Denotes a lead(Pb)-free/RoHS-compliant package.
Multimedia Controls for
Multimedia-Enabled
Cell Phones
Keyboard Encoder for
Slider, Flip, and other
Cell Phones
Portable Media Players
MP3, CD, DVD Players
PDAs
Digital Still Cameras
PDA Accessory
Keyboards
Multimedia Desktop
Speakers
Portable Game
Consoles
Pin Configuration
TOP VIEW
9
8
7
INT 10
6 A0
V_DD 11
MAX11041
FORCE 12 ₊
1
2
3
5 A1
4 N.C.
THIN QFN
(4mm x 4mm x 0.6mm)
EXPOSED PAD CONNECTED TO GND.
________________________________________________________________ Maxim Integrated Products 1
For pricing delivery, and ordering information please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.