ZSSC3018 Datasheet, PDF (1/50 Pages) Integrated Device Technology – Versatile, High Resolution 18-Bit Sensor Signal Conditioner

Versatile, High Resolution 18-Bit
Sensor Signal Conditioner
ZSSC3018
Datasheet
Brief Description
The ZSSC3018 is a sensor signal conditioner (SSC) integrated
circuit for high-accuracy amplification and analog-to-digital
conversion of differential or pseudo-differential input signals.
Designed for high-resolution sensor module applications, the
ZSSC3018 can perform offset, span, and 1^st and 2^nd order
temperature compensation of the measured signal. Developed for
correction of resistive bridge or absolute voltage sensors, it can
also provide a corrected temperature output measured with an
internal sensor.
The measured and corrected sensor values are provided at the
digital output pins, which can be configured as I²C (≤ 3.4MHz) or
SPI (≤ 10MHz). Digital compensation of signal offset, sensitivity,
temperature, and non-linearity is accomplished via a 26-bit
internal digital signal processor (DSP) running a correction
algorithm. Calibration coefficients are stored on-chip in a highly
reliable, non-volatile, multiple-time programmable (MTP) memory.
Programming the ZSSC3018 is simple via the serial interface. The
interface is used for the PC-controlled calibration procedure,
which programs the set of calibration coefficients in memory. The
ZSSC3018 provides accelerated signal processing, increased
resolution, and improved noise immunity in order to support high-
speed control, safety, and real-time sensing applications with the
highest requirements for energy efficiency.
Features
 Flexible, programmable analog front-end design; up to 18-bit
analog-to-digital converter (ADC)
 Fully programmable gain amplifier with gain range from 6.6 to
216 (linear)
 Internal auto-compensated temperature sensor
 Digital compensation of individual sensor offset; 1^st and 2^nd
order digital compensation of sensor gain as well as of 1^st
and 2^nd order temperature gain and offset drift
 Programmable interrupt operation
 High-speed sensing: e.g., 16-bit conditioned sensor signal
measurement rate >500s^-1
 Typical sensor system can achieve an accuracy of better than
±0.10% FSO* @ -40 to 125°C
Benefits
 Integrated 26-bit calibration math DSP
 Fully corrected signal at digital output
 Layout customized for die-die bonding with sensor for high-
density chip-on-board assembly
 One-pass calibration minimizes calibration costs
 No external trimming, filter, or buffering components required
 Highly integrated CMOS design
 Integrated reprogrammable non-volatile memory
 Excellent for low-voltage and low-power battery applications
 Optimized for operation in calibrated resistive sensor
(e.g., pressure) or calibrated absolute voltage sensor
(e.g., thermopile) modules
Physical Characteristics
 Supply voltage range: 1.68V to 3.6V
 Current consumption: ~1.0mA (typical) in operating mode
 Sleep Mode current: 50nA (typical) at 125°C; 20nA (typical)
at 85°C
 Temperature resolution: <0.003K/LSB
 Best-in-class energy-efficiency:
with 16-bit resolution: <140pJ/step
with 18-bit resolution: <50pJ/step
 Operation temperature: –40°C to +125°C
 Delivery options: die or 24-PQFN (4 x 4 mm) package
* FSO = Full Scale Output.
ZSSC3018 Application Example
Sensor Bridge
ZSSC3018
24-PQFN
VDD
GND
EOC
MISO
MOSI/SDA
SCLK/SCL
SS
© 2017 Integrated Device Technology, Inc
1
January 10, 2017