ZSSC3138 Datasheet, PDF (1/25 Pages) Integrated Device Technology – Sensor Signal Conditioner for Ceramic Sensor Applications

Sensor Signal Conditioner for
Ceramic Sensor Applications
ZSSC3138
Datasheet
Brief Description
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).
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.
Benefits
• Family approach offers the best fitting IC selec-
tion to build cost-optimized applications
• 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
• 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
Available Support
• Evaluation Kits
• Application Notes
• Mass Calibration System
Features
• Adjustable to nearly all resistive bridge sensor
types, analog gain of 420, maximum overall gain
of 1680
• Enhanced sample rate: 7.8 kHz maximum
• High ADC resolution 15/16 bit
• Safety functionality sensor connection
• Internal temperature compensation
• Digital compensation of sensor offset, sensitivity,
temperature drift, and non-linearity
• Output options: ratiometric analog voltage output
(5 - 95% maximum, 12.4 bit resolution) or
ZACwire^TM (digital One-Wire Interface (OWI))
• Sensor biasing by voltage
• High voltage protection up to 33 V
• Supply current: 5.5mA maximum
• Reverse polarity and short circuit protection
• Wide operation temperature range between
-40 to +150°C
• Traceability by user-defined EEPROM entries
* Note: I²C™ is a trademark of NXP.
** FSO = Full Scale Output.
© 2016 Integrated Device Technology, Inc.
Physical Characteristics
• Supply voltage 4.5 to 5.5 V
• Operation temperature: -40°C to +125°C
(-40°C to +150°C extended temperature range
depending on product version)
• Available in RoHS-compliant JEDEC-SSOP14
package or delivery as die
ZSSC3138 Minimum Application Requirements
Sensor
Module
VCC
OUT
ZSSC3138
GND
1
January 25, 2016