ZSSC3017 ꢀ Preliminary
16 Bit Resistive Bridge Sensor Signal Conditioner IC
Brief Description
Benefits
The ZSSC3017 is a CMOS integrated circuit for
high accuracy amplification and analogꢀtoꢀdigital
conversion of differential input signals. Designed
for highꢀresolution applications, the device can
perform offset, 1st and 2nd order span, and 1st and
2nd order temperature (Tco and Tcg) compensation
of the measured signal. Developed for correction
of resistive bridge sensors, the ZSSC3017 can
also provide a corrected temperature output using
an internal sensor measurement. The ZSSC3017’s
analog interface is configurable for optimizing the
ZSSC3017's signal processing for the sensor
element. Gain and ADCꢀinput range offset (input
offset shift) can be programmed.
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Integrated 18ꢀbit calibration math DSP
Fully corrected signal at digital output
Minimize calibration costs through the oneꢀ
pass calibration concept
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No external trimming components required
Highlyꢀintegrated, lowꢀcost CMOS design
Physical Characteristics
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Operation temperature: ꢀ40 to +85 °C
Supply voltage: 2.7 to 5.5 V
Input sensitivity: 2.44 to 0.191 ꢁV/(V*LSB)
Sample rate: (samples/second) 200
Sleep Mode current: <2ꢂA (25°C)
Digital compensation of signal offset, sensitivity,
temperature, and nonꢀlinearity is accomplished via
an 18ꢀbitꢀwide internal digital signal processor runꢀ
ning a correction algorithm. Calibration coefficients
are stored in a highly reliable nonꢀvolatile memory
(EEPROM). Measured and corrected bridge
values are provided at the I2C™*ꢀbased digital
output pins. Programming the ZSSC3017 is simple
using the serial interface and the PCꢀcontrolled
calibration software provided in the ZMDI Developꢀ
ment Kit. The digital mating is fast and precise,
eliminating the overhead normally associated with
trimming external components and multiꢀpass
calibration routines.
Delivery options: die for wafer bonding,
TSSOP14 package
Applications
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Pressure measurement and control
Mobile altimeter/barometer systems
Weather forecasting
Sports or multiꢀmode watches
Data merging with GPS receivers
Medical gas control
Heating, ventilation, air conditioning
Medical infusion pumps
Features
Ambulatory nonꢀinvasive pump pressure
Occlusion detection
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Flexibleꢀprogramming analog frontꢀend conꢀ
cept; up to 16ꢀbit scalable, twoꢀstage chargeꢀ
balancing ADC
Robotic endꢀeffectors
ZSSC3017 Application Example
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Fully programmable gain amplifier accepting
sensor signals from 12.5 to 160mV/V
VDD
(2.7 to 5.5V)
CVDD
e.g. 100nF
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Internal autoꢀcompensated temperature sensor
VDD
Digital compensation of individual sensor offset;
1st and 2nd order digital compensation of sensor
gain
Digital compensation of 1st and 2nd order
temperature gain and offset drift
VDD
SDA
SCL
Signal Output /
Postprocessing
SDA
SCL
VDDA
ZSSC3017
VDDA
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INP
Sensor
BGND
INN
VDD
(2.7 to 5.5V)
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Intelligent powerꢀmanagement unit
dice
Supply Control
(optional)
Layout customized for dieꢀdie bonding with
sensor
VSSA
Sensor
Module
VSS
INT
VSS
dice
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Accuracy**: ±0.50% FSO @ ꢀ40 to 85°C
VSS
* I2C is a registered trademark of NXP.
** See datasheet for further details.
© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.2
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