ZSSC3026
Low Power, High Resolution 16-Bit
Sensor Signal Conditioner
Datasheet
Brief Description
Benefits
The ZSSC3026 is a sensor signal conditioner (SSC)
integrated circuit for high-accuracy amplification and
analog-to-digital conversion of a differential input
signal. Developed for correction of resistive bridge
sensors and optimized for high-resolution altimeter
module applications, the ZSSC3026 can perform
offset, span, and 1st and 2nd order temperature com-
pensation of the measured signal. It can also provide
a corrected temperature output measured with an
internal sensor. The corrected measurement values
are provided at the digital output pins, which can be
configured as I2C™* (≤3.4MHz) or SPI (≤20MHz).
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Excellent for low-voltage and low-power battery
applications
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Integrated 18-bit calibration math DSP
Costs minimized via one-pass calibration
No external trimming components required
Highly integrated CMOS design
Physical Characteristics
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Supply voltage range: 1.8 to 3.6V
Current consumption: 900µA (operating mode)
Sleep State current: 50nA (typical)
Digital compensation of the signal offset, sensitivity,
temperature, and non-linearity is accomplished via
an 18-bit internal digital signal processor (DSP) run-
ning a correction algorithm. Calibration coefficients
are stored on-chip in a highly reliable, non-volatile,
multiple-time programmable (MTP) memory. Prog-
ramming the ZSSC3026 is simple via the serial
interface. An internal charge pump provides the
programming voltage. The interface is used for the
PC-controlled calibration procedure, which programs
the calibration coefficients in memory. The digital
mating is fast and precise, eliminating the overhead
normally associated with trimming external com-
ponents and multi-pass calibration routines.
Temperature resolution: <0.003K/LSB
Operation temperatures depending on part
number: –40°C to +85°C
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Small die size
Delivery options: die for wafer bonding, bumped
die for Flip Chip, PQFN24
Typical Applications
The ZSSC3026 is designed for operation in cali-
brated resistive (e.g., pressure) sensor modules:
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Barometric altitude measurement for portable
navigation
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Altitude measurement for emergency call
systems and car navigation
Features
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Flexible, programmable analog front-end design;
up to 16-bit scalable, charge-balancing two-
segment analog-to-digital converter (ADC)
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Inside hard disk pressure measurement
Weather forecast
Fan control
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Fully programmable gain amplifier for optimizing
sensor signals: gain range 14 to 72 (linear)
ZSSC3026 Application Example
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Internal auto-compensated temperature sensor
Digital compensation of individual sensor offset;
1st and 2nd order compensation of sensor gain
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Digital compensation of 1st and 2nd order tem-
perature gain and offset drift
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Intelligent power management unit
Layout customized for die-die bonding with
sensor for high-density chip-on-board assembly
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Typical sensor elements can achieve accuracy of
better than ±0.10% FSO @ -40 to 85°C
* I2C™ is a registered trademark of NXP.
© 2016 Integrated Device Technology, Inc.
1
March 28, 2016
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