MAX1441 Datasheet, PDF (7/41 Pages) Maxim Integrated Products – Automotive, Two-Channel Proximity and Touch Sensor

Automotive, Two-Channel Proximity and
Touch Sensor
Functional Diagram
SINPUT1
C2D1
AGUD1
OFFSET
COMP1
AGUD2
SINPUT2
SINUSOIDAL
EXCITATION
GENERATOR
OFFSET
COMP 2
C2D2
DIGITAL
CONTROL
BLOCK
CLOCK GENERATOR
128 BYTE
SRAM
COMMUNICATION
AND
MODE CONTROL
2-kword
FLASH
2-kword
ROM
MAXQ
CORE
VBATT
LDO
PORT
CONTROL
VAA
OUT1
OUT2
P0.0
P0.1
P0.2
P0.3
P0.4
MAX1441
TOUCH
PADS
PROGRAMMING PADS
Typical Application Circuit
P0.4 P0.3/TMS P0.2/
P0.1/
P0.0/
INT2/TDI INT1/TDO INT0/TCK
SINPUT1
AGUD1
AGUD2
SINPUT2
MAX1441
V_BATT
OUT1
OUT2
V_AA
V_DD
DGND
AGND
RESET
V_DD
V_DD
10kI
10kI
V_BATT
OUT1
OUT2
4.7kI
0.47µF 0.47µF 0.1µF
GND
7