ZSSC4161 Datasheet, PDF (1/4 Pages) Integrated Device Technology – Sensor Signal Conditioner Family

Sensor Signal Conditioner Family
ZSSC416x /
ZSSC417x
Feature Sheet
Brief Description
IDT’s ZSSC416x/ZSSC417x is a family of CMOS
integrated circuits for highly accurate amplification
and sensor-specific correction of differential bridge
sensor signals. Featuring a maximum analog pre-
amplification in the range of 150 to 200, this product
is adjustable to nearly all resistive bridges as well as
voltage source sensor types; e.g., thermocouples.
Digital compensation of offset, sensitivity, temper-
ature drift, and nonlinearity is accomplished with a
16-bit RISC microcontroller. Calibration coefficients
and configuration data are stored in the ZSSC416x/
ZSSC417x non-volatile memory (NVM), which is
reliable in automotive applications.
Measured values can be read via a digital SENT or
I²C™* interface. The SENT interface enables trans-
mission of sensor data via its fast channel as well as
supplementary data via its “slow” Serial Data Mes-
sage (SDM) channel using only one output pin. End-
of-line calibration is supported via an I²C™ interface
or via a One-Wire Interface (OWI) through the data
output pin (DOUT). The ZSSC416x/ ZSSC417x and
the calibration equipment communicate digitally, so
the noise sensitivity is greatly reduced. Digital
calibration helps keep assembly cost low as no
trimming by external devices or lasers is needed.
The ZSSC416x/ZSSC417x is optimized for automo-
tive environments by overvoltage and reverse
polarity protection circuitry, excellent electromag-
netic compatibility, and multiple diagnostic features.
Features
 Differential sensor bridge or voltage source inputs
 Internal or external temperature sensors, select-
able for conditioning of sensor input signals or
temperature output
 Digital compensation of offset, gain, and higher
order nonlinearity as well as temperature
coefficients of measured sensor input signals
 Operating temperature range: -40°C to 150°C
 Accuracy: ±0.25% FSO @ -40°C to 125°C
 NVM memory for configuration data, user con-
figurable measurement and conditioning function,
and user-selected data
* I²C™ is a trademark of NXP.
Benefits
 SENT output option based on SAE J2716 Rev 3.0
standard using fast and SDM data channels
 Supports output of one or more sensor signals
and product identification via a single SENT
interface connection
 Configurable for nearly all resistive bridge sensors
 One-pass end-of-line calibration algorithm
minimizes production costs
 No external trimming or components required
 I²C™ interface option
Available Support
 Evaluation Kit
 Application Notes
 Calculation Tools
Physical Characteristics
 Supply voltage: 4.75V to 5.25V
 Protection up to +/-18V
 Input span: 1 to 800 mV/V
 Analog-to-digital (ADC) resolution: configurable
from 12 to 16 bit
 Large sensor offset correction using digital
zooming with 14 to 18 bit resolution
 Output resolution: 12-bit via SENT interface; up to
15-bit plus a sign bit for OWI or I²C™ interface
 Package: 4x4mm QFN24 or die
Basic Circuit for Dual Bridge Applications
VCC
ZSSC
4165
SENT/OWI
SDA
SCL
GND
.
© 2016 Integrated Device Technology, Inc.
1
April 24, 2016