Automotive Sensor Signal Conditioner
with LIN and PWM Interface
ZSSC3170
Datasheet
Brief Description
Benefits
The ZSSC3170 is a CMOS integrated circuit for highly
accurate amplification and sensor specific correction
of bridge sensor signals. Featuring a maximum analog
gain of 420, as well as extended offset compensation
capabilities, the ZSSC3170 is adjustable to nearly all
resistive bridge sensor types.
Measurement and temperature signal available via
one output pin
Compatible with nearly all resistive bridge inputs
No external trimming components required
Single-pass calibration minimizes calibration costs
End-of-line calibration using sensor output
Digital compensation of offset, sensitivity, temperature
drift, and nonlinearity is accomplished via a 16-bit
RISC microcontroller. Conditioning coefficients are
stored in an EEPROM certified for automotive appli-
cations.
Optimized for automotive environments with
special protection circuitry, excellent electro-
magnetic compatibility, and numerous diagnostic
features; AEC-Q100-qualified
Measured values are provided by one of the digital
LIN or PWM interfaces. Each interface can support
end-of-line calibration using the sensor output. Noise
sensitivity is greatly reduced because the calibration
equipment and the ZSSC3170 are mated digitally.
Available Support
Evaluation Kit
Application Notes
Calculation Tools
For quick and easy evaluation and support for
calibrating prototypes, IDT offers the ZSSC3170 SSC
Evaluation Kit, which includes evaluation hardware,
SSOP20 samples, and software.
Physical Characteristics
Supply voltage: 7 to 18 V
Current consumption in Sleep Mode: ≤ 100μA
Input span: 1.8 to 267 mV/V
Features
ADC resolution: 13 to 14 bit
Complies with LIN specifications 1.3 / 2.0 / 2.1
Configurable LIN publisher frame content
Output resolution: up to 12-bit (LIN and PWM)
Operating temperature range: -40 to 125°C
Extended operating temperature range: ≤150°C
Data conversion rate of up to 430Hz fully utilizes
the maximum LIN channel capacity of 20kbit/s
RoHS-compliant delivery form options:
SSOP20, DFN20, or die
PWM high-side and low-side switches, support for
LIN communication for end-of-line calibration
Digital compensation of offset, gain, temperature
effects up to 2nd order, and nonlinearity up to 3rd
order. Compensation of temperature sensor offset,
gain, and nonlinearity up to 2nd order.
ZSSC3170 Basic Circuit
LIN
GND
Internal or external temperature reference
Media temperature sensing by diode or RTD
Load dump protection of the LIN pin up to ±40V
VBAT
Accuracy
±0.25% FSO @ -20 to 85°C
±0.50% FSO @ -40 to 125°C
±1.00% FSO @ -40 to 150°C
3 EEPROM words available for optional user data
© 2016 Integrated Device Technology, Inc.
1
May 30, 2016