Datasheet

8 Automotive Applications Design Guide
LOW-POWER ANALOG SOLUTIONS FOR AUTOMOTIVE APPLICATIONS
Signal Chain Solutions
MUX
REF
Op
Amp
Filter
A/D
8/16-bit PIC
®
Microcontroller
16-bit dsPIC
®
DSC
Sensor
Application Examples
 Key-off Applications Requiring Low Power
 Humidity and Pressure Sensors
 Level and Tilt Sensors
 Air Quality Sensor
 Light and Temperature Sensor
 Rain Sensor
 ABS
 TPMS
 PKE/RKE
 Dashboard Illumination
 Car Audio (Infotainment)
 Air Bags (Occupant Detect)
 Electronic Power Steering
 Hybrid Electric Vehicle Battery Monitors
 Signal, Warning and Daytime Running Lights
 Approach, Crash and Steering Angle Sensors
Solutions for Sensor Applications
Modern vehicles are
networked PCs on wheels
where sensors provide the
interface to the real world.
The number of sensors in
automotive applications
is rapidly increasing. Of
all sensing technologies,
temperature sensing is the most common. Knowing and
using the actual or relative temperature is critical. For
instance, other sensors such as pressure, force, flow, level
and position many times require temperature monitoring in
order to ensure accuracy.
Signal Chain Solutions
Our extensive analog portfolio includes operational
amplifiers and programmable gain amplifiers, voltage
references, digital potentiometers, analog-to-digital
converters and silicon IC temperature sensors to meet
today’s demanding measurement design requirements.
Recommended Product Families for Sensor Applications
Family Features Device Examples
Serial Output Temp
Sensors
Offer excellent temperature accuracy with very low operating current; communi-
cation is accomplished via I
2
C™ or SPI; all devices are offered in space-saving
packages and feature very fast temperature conversion times
MCP9800/1/2/3/5,
TC72/4/5/7/A
Voltage Output Temp
Sensors
Temperature conversion accuracy, linear temperature slopes, small packages MCP9700/1/A, TC1046/7/A
Logic Output Temp
Sensors
Excellent temperature accuracy (±1°C typical); low operating current (<600 μA);
features include programmable hysteresis, remote temperature sensing and
dual temperature limit output
TC620/1/2/3/4, TC6501/2/3/4,
TCN75A
Programmable Gain
Amplifiers (PGA)
Programmable over SPI bus, adds gain control and input channel selection to
the embedded control system; reduces complexity of multiple sensor system to
one amplifier; lower system costs, requires less space
MCP6S21/2/6/8, MCP6S91/2/3
Op Amps Single, dual and quad op amps, low quiescent current (600 nA), lowest I
Q 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
Voltage References Voltage references in SOT23-3 and TO-92 packages MCP1525/41
Digital Potentiometers A family of digital potentiometers combine high performance and low power
consumption in a small package
MCP4011/2/3/4, MCP4021/2/3/4,
MCP41010/050/100,
MCP42010/050/100
Analog-to-Digital
Converters (ADC)
Broad portfolio of high-precision SAR, Delta-Sigma and Dual Slope A/D
Converters; SAR ADCs up to 13-bit with low power consumption combined in a
small package
MCP3X01/2/4/8, MCP3X21,
MCP3550/1/3, TC500/00A/10/14/
20A/30/34, TC835/50,
TC7135/14433/A
Microcontrollers Wide range of 8/16- RISC-based microcontrollers and digital signal controllers PIC12, PIC16, PIC18, PIC24,
dsPIC30, dsPIC33