ZSC31050
Advanced Differential Sensor
Signal Conditioner
Datasheet
Brief Description
Features
ZSC31050 is a CMOS integrated circuit for highly
accurate amplification and sensor-specific correction
of bridge sensor and temperature sensor signals.
The device provides digital compensation of sensor
offset, sensitivity, temperature drift, and non-linearity
via a 16-bit RISC microcontroller running a polyno-
mial correction algorithm.
• Digital compensation of sensor offset, sensitivity,
temperature drift, and nonlinearity
• Accommodates nearly all resistive bridge sensor
types (signal spans from 1mV/V up to 275mV/V)
• Digital one-pass calibration: quick and precise
• Selectable compensation temperature source:
bridge, thermistor, or internal or external diode
The ZSC31050 accommodates virtually any bridge
sensor type (e.g., piezo-resistive, ceramic thick-film,
or steel membrane based). In addition, it can inter-
face to a separate temperature sensor. The bi-direc-
tional digital interfaces (I2C™*, SPI, and ZACwire™)
can be used for a simple PC-controlled one-pass
calibration procedure to program a set of calibration
coefficients into an on-chip EEPROM. A specific
sensor and a ZSC31050 can be mated digitally: fast,
precise and without the cost overhead associated
with trimming by external devices or laser. The
ZACwire™ interface enables an end-of-line calibra-
tion of the sensor module.
• Output options: voltage (0 to 5V), current
(4 to 20mA), PWM, I2C™, SPI, ZACwire™
(one-wire interface), alarm
• Adjustable output resolution (up to 15 bits) versus
sampling rate (up to 3.9kHz)
• Current consumption: 2.5mA (typical)
• Selectable bridge excitation: ratiometric voltage,
constant voltage, or constant current
• Input channel for separate temperature sensor
• Sensor connection and common mode check
(sensor aging detection)
•
AEC-Q100 qualification (temperature grade 0)
Typical applications for the ZSC31050 include indus-
trial, medical, and consumer products. It is specifi-
cally engineered for most resistive bridge sensors;
e.g., sensors for measuring pressure, force, torque,
acceleration, angle, position, and revolution.
Physical Characteristics
• Operation temperature -40 to +125°C (-40 to
+150°C de-rated, depending on product version)
• Supply voltage: 2.7 to 5.5 V; with external JFET:
5 to 40 V
Benefits
• Available in SSOP16 package or as die
• No external trimming components required
ZSC31050 Overview
• PC-controlled configuration and calibration via
digital bus interface – simple, low cost
VCC
• High accuracy (±0.1% FSO @ -25 to 85°C;
±0.25% FSO @ -40 to 125°C)
†
Sensor
Module
Available Support
OUT
ZSC31050
• Evaluation kit available
• Support for industrial mass calibration available
• Quick circuit customization possible for large
GND
production volumes
* I2C™ is a trademark of NXP.
† Digital output signal.
© 2016 Integrated Device Technology, Inc.
1
January 20, 2016