Advanced Differential
ZSC31050
Sensor Signal Conditioner
Datasheet
Brief Description
Features
ZSC31050 is a CMOS integrated circuit for highly accurate amp-
lification and sensor-specific correction of bridge sensor and
temperature sensor signals. The device provides digital com-
pensation of sensor offset, sensitivity, temperature drift, and non-
linearity via a 16-bit RISC microcontroller running a polynomial
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 interface to a separate temperature
sensor. The bi-directional 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 calibration 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)
Typical applications for the ZSC31050 include industrial, medical,
and consumer products. It is specifically engineered for most
resistive bridge sensors; e.g., sensors for measuring pressure,
force, torque, acceleration, angle, position, and revolution.
.
AEC-Q100 qualification (temperature grade 0)
Physical Characteristics
.
.
.
Operation temperature -40°C to +125°C (-40°C to +150°C
de-rated, depending on product version)
Benefits
.
No external trimming components required
Supply voltage: 2.7V to 5.5V;
with external JFET: 5V to 48 V
.
PC-controlled configuration and calibration via digital bus
interface – simple, low cost
Available in 16-SSOP package or as die
.
High accuracy (±0.1% FSO @ –25 to 85°C;
±0.25% FSO @ –40 to 125°C) *
Basic Circuit Diagram
Available Support
VCC
OUT
.
.
.
Evaluation kit available
Support for industrial mass calibration available
Sensor
Module
Quick circuit customization possible for large production
volumes
ZSC31050
GND
* Digital output signal.
© 2017 Integrated Device Technology, Inc.
1
February 13, 2017