Datasheet
4 Automotive Applications Design Guide
Solutions for Low-Frequency Communications
Applications
Low-frequency communication systems provide
many benefits in and around the vehicle. In sensing
applications, it allows for the distribution of remote
sensors while eliminating the concern for wired
connection between the sensor and control module. In
other applications, a transponder becomes a mobile
device that can remain with the driver, or is attached to
another apparatus that can be transferred to/from the
vehicle when needed.
LOW-POWER ANALOG SOLUTIONS FOR AUTOMOTIVE APPLICATIONS
Recommended Product Families for PKE Applications
Family Features Device Examples
3D Analog Front End Bidirectional low-frequency communications, low-operating and standby
currents, programmable antenna tuning capacitance
MCP2030
CAN/LIN Products CAN transceivers and stand-alone controllers with SPI, LIN transceivers
with integrated voltage regulators
MCP2515, MCP2551X, MCP201
Op Amps Single, dual and quad op amps, low quiescent current (600 nA), lowest
IQ for a given Gain Bandwidth Product (GBWP); offered in space-saving
packages
MCP6041/2/3/4, MCP6141/2/3/4
MCP601/2/3/4/6/7/8/9, MCP6021/2/3/4
Low-Side Drivers Single, dual and quad MOSFET Drivers, 0.5 to 12A peak output currents,
inverting and non-inverting outputs
TC4420/1/2/3/4/5/6/7/8/9/A,
TC1410/1/2/3, TC4451/2, TC4467/8/9
Microcontrollers Wide range of 8/16- RISC-based microcontrollers and digital signal
controllers
PIC12, PIC16, PIC18, PIC24
Development Tools
Part Number Product
DV251001 MCP2510/2515 CAN Developer’s Kit
APGRD001 Passive Keyless Entry Reference Design
APGAC011 Accessory Key Fob For APGRD001 PKE Reference Design
DM163007/11/15 PICDEM
™
CAN-LIN 1 2 and 3 Demonstration Boards
DM163005 PICDEM
™
LIN Demonstration Board
Example of Passive Keyless Entry (PKE) Systems
Low-Side
Driver
LIN + LDO
CAN
Transceiver
L/F Antenna
UHF
Receiver
8/16-bit PIC
®
Microcontroller
8/16-bit PIC
®
Microcontroller
8/16-bit PIC
®
Microcontroller
UHF
Transmitter
3D Analog
Front End
Application Examples
Remote Keyless Entry (RKE)
Passive Keyless Entry (PKE)
Tire Pressure Monitoring Systems (TPMS)
Child Seat Detection
Immobilizers