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PDF MAX11041 Data sheet ( Hoja de datos )
| Número de pieza | MAX11041 | |
| Descripción | (MAX11041 / MAX11042) Wired Remote Controllers | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX11041 (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
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19-3984; Rev 1; 8/07
www.DataSheet4U.com
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 32Ω or 16Ω Headphones
♦ 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.
1 page  
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Wired Remote Controllers
(TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics
DEBOUNCE SCOPE SHOT (FALLING)
MAX11041/42 TOC01
VSENSE
DEBOUNCE SCOPE SHOT (RISING)
MAX11041/42 TOC02
VSENSE
KEYPRESS RELEASE SCOPE SHOT*
MAX11041/42 TOC03
VSENSE
INT DEBOUNCED KEY µP READS FIFO
ADDED TO FIFO
10ms/div
INT DEBOUNCE KEY ADDED
TO FIFO
µP READS
FIFO
10ms/div
INT DEBOUNCE KEY ADDED
TO FIFO
µP READS
FIFO
10ms/div
VDD SUPPLY CURRENT vs. VOLTAGE
7.0
NO JACK INSERTED
6.5
TA = +85°C
6.0
VDD SHUTDOWN SUPPLY CURRENT
vs. VOLTAGE
1.00
NO JACK INSERTED
0.75
5.5
5.0
4.5
4.0
1.6
TA = +25°C
TA = -40°C
2.1 2.6 3.1
VDD (V)
3.6
0.50
0.25
0
1.6
TA = +85°C
TA = -40°C
TA = +25°C
2.1 2.6 3.1
VDD (V)
3.6
*Oscilloscope shots are taken with simulated bounce and chatter. Real switches will exhibit different bounce and chatter characteristics.
____________________________________________________________________________________ 5
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Wired Remote Controllers
Table 4. Required Resistor Set for the MAX11041
KEY
STANDARD 1%
RESISTOR VALUE (Ω)
FIFO RESISTOR CODE*
LOWEST
HIGHEST
00
0
1 1470
11
2 2550
19
3 3740
27
4 4990
35
5 6340
6 7680
42
50
7 9310
58
8 11000
66
9 13000
74
10 15000
11 17400
82
90
12 20000
13 22600
98
105
14 26100
114
15 30100
123
16 34000
130
17 38300
18 44200
137
146
19 51100
154
20 59000
162
21 68100
170
22 80600
178
23 95300
186
24 118000
194
25 147000
202
26 191000
211
27 261000
218
28 402000
226
29
Jack inserted
Jack removed
825000
619000
∞
235
243
254
*Values outside FIFO resistor code are considered invalid.
1
13
21
30
38
46
53
62
70
78
86
94
102
110
119
127
135
142
150
159
166
174
182
190
198
206
214
222
229
237
245
255
FUNCTION
Function 0
Function 1
Function 2
Function 3
Function 4
Function 5
Function 6
Function 7
Function 8
Function 9
Function 10
Function 11
Function 12
Function 13
Function 14
Function 15
Function 16
Function 17
Function 18
Function 19
Function 20
Function 21
Function 22
Function 23
Function 24
Function 25
Function 26
Function 27
Function 28
Function 29
Jack inserted
Jack removed
___________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet MAX11041.PDF ] | |
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