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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX11041 Datasheet

(MAX11041 / MAX11042) Wired Remote Controllers

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MAX11041 pdf
19-3984; Rev 1; 8/07
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Wired Remote Controllers
General Description
The MAX11041/MAX11042 wired remote controllers
convert up to six or 30 different pushbuttons into an I2C
register. Together with low-cost pushbutton switches
and 1% resistors, the MAX11041/MAX11042 are total
solutions 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/MAX11042
consume only 5µA (typ) while reading keypresses in
real time without microprocessor (µP) polling. The
devices send the debounced keypress along with key
duration to the application processor over the I2C inter-
face. 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/MAX11042.
The MAX11041/MAX11042 include ±15kV ESD protec-
tion devices on the FORCE and SENSE inputs to ensure
IEC 61000-4-2 compliance without any external
ESD devices.
The MAX11041/MAX11042 are available in 12-bump
UCSP™ and 12-pin TQFN packages. The devices are
specified over the extended temperature range
(-40°C to +85°C).
Multimedia Controls for
Multimedia-Enabled
Cell Phones
Keyboard Encoder for
Slider, Flip, and other
Cell Phones
Portable Media Players
MP3, CD, DVD Players
Applications
PDAs
Digital Still Cameras
PDA Accessory
Keyboards
Multimedia Desktop
Speakers
Portable Game
Consoles
Features
Detect Up to Six (MAX11042) or 30 (MAX11041)
Different Keys and Jack Insertion/Removal
Work with Either 32or 16Headphones
Add Remote-Control Functionality to Devices
Using a Simple Resistor and Switch Array
Low-Power Operation Consuming a Supply
Current of Only 5µA (typ)
Work with Standard 2.5mm or 3.5mm 4-Pin
Headphone Jacks
Support Hold Function to Lockout Keys
100kHz/400kHz I2C Interface
Single 1.6V to 3.6V Supply Voltage Range
±15kV ESD Protection (IEC 61000-4-2)
Ordering Information
PART
TEMP
RANGE
PIN-
PACKAGE
MAX11041ETC+ -40°C to +85°C 12 TQFN-EP*
MAX11042ETC+** -40°C to +85°C 12 TQFN-EP*
*EP = Exposed pad.
**Future product—contact factory for availability.
PKG
CODE
T1244-4
T1244-4
Pin Configurations
TOP VIEW
987
INT 10
6 A0
VDD 11
FORCE 12
MAX11041
MAX11042
1 23
5 A1
4 N.C.
UCSP is a trademark of Maxim Integrated Products, Inc.
THIN QFN
(4mm x 4mm x 0.6mm)
EXPOSED PAD CONNECTED TO GND.
Pin Configurations continued at end of data sheet.
________________________________________________________________ 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.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX11041 Datasheet

(MAX11041 / MAX11042) Wired Remote Controllers

No Preview Available !

MAX11041 pdf
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Wired Remote Controllers
ABSOLUTE MAXIMUM RATINGS
VDD to GND ...........................................................-0.3V to +4.0V
INT to GND .................................................-0.3V to (VDD + 0.3V)
SCL, SDA, A1, A0, SHDN to GND.........................-0.3V to +4.0V
FORCE, SENSE Short to GND....................................Continuous
Junction Temperature ......................................................+150°C
Operating Temperature Range ...........................-40°C to +85°C
FORCE, SENSE to GND.........................................................±6V
Current into Any Pin..........................................................±50mA
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Maximum ESD per IEC 61000-4-2
Human Body Model, FORCE, SENSE............................±15kV
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VDD = +1.6V to 3.6V, CSENSE = 10nF, RSENSE = 10k, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
KEY DETECTION CHARACTERISTICS
Detectable Keys
Maximum Switch Resistance
Maximum Switch Bounce Time
External Resistor Tolerance
SWITCH DEBOUNCE
Debounce Analog Time Constant
Chatter Rejection
CONDITIONS
Provided the keys meet
the next three
specifications; RJACK
connected; use
recommended circuit
(Note 1)
(Note 1)
(Note 1)
MAX11041
MAX11042
CSENSE = 10nF, external resistor from
FORCE to SENSE is 10k(RSENSE)
Pulses shorter than this are ignored
MIN TYP MAX UNITS
30
6
100
13
±1
Keys
ms
%
0.4 ms
18 ms
Rising Voltage Debounce Time
tCPW
Time required for a new voltage (due to
keypress) to be detected and stored in
FIFO
18 ms
Falling Voltage Debounce Time
tLPWS
Time required for detection of key release
and final time duration to be stored in FIFO
18
ms
Jack Insertion Debounce Time
(Note 2)
18 ms
Jack Removal Debounce Time
(Note 2)
18 ms
DURATION COUNTER
Duration-Counter Resolution
One tick
32 ms
Duration-Counter Range
MSB is overflow bit
0 127 Counts
Duration-Counter Accuracy
DIGITAL INPUTS (SDA, SCL, SHDN, A0, A1)
±20 %
Input High Voltage
VIH
0.7 x
VDD
V
Input Low Voltage
VIL
0.3 x
VDD
V
Input Leakage Current
Input Hysteresis
Input Capacitance
IIH, IIL
-10 +10 µA
9 %VDD
10 pF
2 _______________________________________________________________________________________


Part Number MAX11041
Description (MAX11041 / MAX11042) Wired Remote Controllers
Maker Maxim Integrated Products
Total Page 19 Pages
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