MAS9171A View Datasheet(PDF) - Micro Analog systems
Part Name
Description
Manufacturer
MAS9171A Datasheet PDF : 9 Pages
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S
APPLICATION INFORMATION
DA9171A.000
July 31, 1997
• INPUT PROTECTION USING MAS9171A
The MAS9171A is a eight channel protection circuit for microprocessors in automotive applications that may
be used in industrial applications as well. All inputs are protected against energy rich pulses according to
DIN40839/ISO7637. Internal analog filters and suitable input threshold voltages provide the functionality
within a noise spectrum of 150KHz up to 1GHz without need of external filter components. The MAS9171A
is optimized for low current consumption.
Advantages of MAS9171A
VIN1
VIN2
VIN3
VIN4
VIN5
VIN6
VIN7
VIN8
VDD
Protect
F lter
COMP
GND
VOUT1
VOUT2
VOUT3
VOUT4
VOUT5
VOUT6
VOUT7
VOUT8
- lower price when comparing Part+Board costs
- easy layout
- better reliability
- less test time
- universal to use, less development time
Fig. 3: Block diagram of MAS9171A
• APPLICATION EXAMPLES
VBAT
Sensors
Oil
PGND
0-12V
Switch
1
Gen-
erator
Batt.
Tacho
Filter+
Protection
Vdd
MAS9171
Vdd
MAS9171
Vdd
Voltage-
Vdd
Regulator
+ Reset
Res
Port1
uC Port2
Instrument
Driver
Lamp
Driver
Vbat
Vbat
ABS
MAS9171
Port3
EEPROM
Fig.4: Electronic Dashboard for Cars
6
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