ZSSC3135 Datasheet, PDF (1/23 Pages) Integrated Device Technology – Sensor Signal Conditioner for Piezoresistive Bridge Sensors

Sensor Signal Conditioner for
Piezoresistive Bridge Sensors
ZSSC3135
Datasheet
Brief Description
The ZSSC3135 is a member of the ZSSC313x
family of CMOS integrated circuits designed for
automotive/industrial sensor applications. All family
members are well suited for highly accurate amp-
lification 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 in an
on-chip EEPROM.
The ZSSC3135 is specially designed for piezo-
resistive bridge sensor elements. The amplification
stage with an analog gain of 105 in combination with
optional temperature compensation via an external
temperature sensor meets or exceeds the require-
ments of piezoresistive sensor applications.
Features
• Adjustable to nearly all resistive bridge sensor
types: analog gain of up to 105, maximum overall
gain of 420
• Sample rate up to 200 Hz
• ADC resolution 13/14 bit
• Safety functionality sensor connection
• External temperature sensor
• 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™ (digital One-Wire Interface (OWI))
• Sensor biasing by voltage
• High voltage protection up to 33 V
• Supply current: max. 5.5mA
• Reverse polarity and short circuit protection
• Wide operation temperature range:
-40 to +150°C
• Traceability by user-defined EEPROM entries
* Note: I²C™ is a trademark of NXP.
** FSO = Full Scale Output.
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^TM
interface: simple, cost-efficient, quick, and pre-
cise
• 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
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
ZSSC3135 Minimum Application Requirements
Sensor
Module
VCC
ZSSC3135
OUT
GND
© 2016 Integrated Device Technology, Inc.
1
January 27, 2016