ZSSC3138
Sensor Signal Conditioner for
Ceramic Sensor Applications
Datasheet
Brief Description
Benefits
The ZSSC3138 is a member of the ZSSC313x
product family of CMOS integrated circuits designed
for automotive/ industrial sensor applications. All
family members are well suited for highly accurate
amplification and sensor-specific correction of
resistive bridge sensor signals. An internal 16-bit
RISC microcontroller running a correction algorithm
compensates sensor offset, sensitivity, temperature
drift, and non-linearity of the connected sensor
element. The required calibration coefficients are
stored by the one-pass calibration procedure on chip
(EEPROM).
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Family approach offers the best fitting IC selec-
tion to build cost-optimized applications
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No external trimming components required
Low number of external components needed
PC-controlled configuration and one-pass/
end-of-line calibration via I²C™* or ZACwire™
interface: simple, cost efficient, quick, and precise
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High accuracy (0.25% FSO** @ -25 to +85°C;
0.5% FSO @ -40 to +125°C)
Optimized for automotive/industrial environments
due to robust protection circuitries, excellent
electromagnetic compatibility and AEC-Q100
qualification
The ZSSC3138 offers a maximum analog gain of
420 and two offset compensation features. These fit
perfectly with the requirements of ceramic thick-film-
based sensor elements as well as strain gauges.
The high amplification in combination with the offset
compensation offers the capability to set up ceramic
thick-film-based sensor applications without laser
trimming, which leads to better long-term stability.
Available Support
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Evaluation Kits
Application Notes
Mass Calibration System
Physical Characteristics
Features
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Supply voltage 4.5 to 5.5 V
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Adjustable to nearly all resistive bridge sensor
types, analog gain of 420, maximum overall gain
of 1680
Operation temperature: -40°C to +125°C
(-40°C to +150°C extended temperature range
depending on product version)
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Enhanced sample rate: 7.8 kHz maximum
High ADC resolution 15/16 bit
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Available in RoHS-compliant JEDEC-SSOP14
package or delivery as die
Safety functionality sensor connection
Internal temperature compensation
Digital compensation of sensor offset, sensitivity,
temperature drift, and non-linearity
ZSSC3138 Minimum Application Requirements
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Output options: ratiometric analog voltage output
(5 - 95% maximum, 12.4 bit resolution) or
ZACwireTM (digital One-Wire Interface (OWI))
VCC
Sensor
Module
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Sensor biasing by voltage
High voltage protection up to 33 V
Supply current: 5.5mA maximum
Reverse polarity and short circuit protection
OUT
ZSSC3138
Wide operation temperature range between
-40 to +150°C
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Traceability by user-defined EEPROM entries
GND
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Note: I2C™ is a trademark of NXP.
** FSO = Full Scale Output.
© 2016 Integrated Device Technology, Inc.
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January 25, 2016