ZSSC3136 Datasheet, PDF (1/24 Pages) Integrated Device Technology – Sensor Signal Conditioner for Safety Switch Applications

Sensor Signal Conditioner for
Safety Switch Applications
ZSSC3136
Datasheet
Brief Description
The ZSSC3136 is a member of the ZSSC313x
family of CMOS integrated circuits 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 in an on-chip EEPROM.
The ZSSC3136 is optimized for SIL (Safety Integrity
Level) rated switch applications. The integrated
adjustable digital filter offers the possibility of setting
up fast switching real-time applications as well as
stabilized switching applications in the case of
disturbed or unstable input signals.
In addition to the general features for switch appli-
cations, the ZSSC3136 offers the capability to set up
safety-relevant SIL2 rated switches due to its
extended safety functionalities.
Features
• Analog gain of 105, maximum overall
gain of 420
• Sample rate: 200 Hz maximum
• ADC resolution: 13/14 bit
• External temperature sensor
• Safety functionalities: Calibration microcontroller,
sensor connection, analog front-end
• Adjustable to nearly all resistive bridge sensor
types
• Digital compensation of sensor offset, sensitivity,
temperature drift, and non-linearity
• Output options: ratiometric analog voltage output
(5 - 95% in 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: max. 5.5mA
• Reverse polarity and short circuit protection
• Wide operation temperature: -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.
Benefits
• Capability for setting up SIL level 2 applications
• Application-focused feature set
• No external trimming components required
• Only a few external protection devices 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 environment
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
ZSSC3136 Minimum Application Requirements
Sensor
Module
VCC
ZSSC3136
OUT
GND
1
January 22, 2016