ZSSC3218 High-End 18-Bit Sensor Signal Conditioner IC Brief Description Benefits The measured and corrected sensor values are provided at the digital output pins, which can be 2 configured as I C™* (≤ 3.4MHz) or SPI (≤ 20MHz). 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 ZSSC3218 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 ZSSC3218 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 for optimizing sensor signals: gain range 6.6 to 216 (linear) Internal auto-compensated temperature sensor Digital compensation of individual sensor offset; st nd 1 and 2 order digital compensation of sensor st nd gain as well as 1 and 2 order temperature gain and offset drift Programmable interrupt operation High-speed sensing: e.g. 16-bit conditioned -1 sensor signal measurement rate >500s Typical sensor elements can achieve an accuracy of better than ±0.10% FSO** at -40 to 85°C Integrated 26-bit calibration math digital signal processor (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 (e.g., pressure) sensor or calibrated absolute voltage (e.g., thermopile) sensor modules Physical Characteristics Supply voltage range: 1.68V to 3.6V Current consumption: 1.0mA (operating mode) Sleep State current: 20nA (typical) 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 +85°C Small die size Delivery options: die for wafer bonding * I2C™ is a trademark of NXP. ** FSO = Full Scale Output. ZSSC3218 Application Example VSS VDD VDD ry Batte Stacked-Die Sensor Module VDD VSS ZSSC3218 VDDB RES MISO INP(+) SS RES VDDB EOC SS VSS sensor element INP INN VSSB EOC MOSI SDA INN(-) VSSB MOSI SDA SCLK SCL Microcontroller Signal Output / Post-processing The ZSSC3218 is a sensor signal conditioner (SSC) integrated circuit for high-accuracy amplification and analog-to-digital conversion of a differential or pseudo-differential input signal. Designed for highresolution sensor module applications, the st nd ZSSC3218 can perform offset, span, and 1 and 2 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. MISO SCLK SCL For more information, contact ZMDI via [email protected]. © 2014 Zentrum Mikroelektronik Dresden AG — Rev. 1.03 — November 17, 2014. All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice. ZSSC3218 High-End 18-Bit Sensor Signal Conditioner IC VDDB ZSSC3218 Block Diagram VTP VTN Vreg int Temperature Reference Sensor VDD AGND / CM Generator Bias Current Generator Power Ctr. Voltage Regulator VSS Sensor Bridge INP INN Multiplexer ZSSC3218 A PreAmplifier D DSP Core (Calculations, Communication) 18 Bit VSSB SPI Power-ON Reset Clock Generator Applications Barometric altitude measurement for portable navigation or emergency call systems Altitude measurement for car navigation Weather forecast Fan control Industrial, pneumatic, and liquid pressure High-resolution temperature measurements Object-temperature radiation (via thermopile) Oscillator System Control Unit MTP I²CTM Sales Code Description Package ZSSC3218BI1B Die—temperature range: –40°C to +85 °C; thickness 304µm Unsawn wafer ZSSC3218BI2B Die—temperature range: –40°C to +85 °C; thickness 725µm (w/o backlapping) Unsawn wafer ZSSC3218BI1D ES Die—temperature range: –40°C to +85 °C; thickness 304µm, engineering samples Sawn die in waffle pack ZSSC3218BI3R ES PQFN24—temperature range: –40°C to +85 °C; engineering samples Packaged die Sales and Further Information www.zmdi.com EOC SCLK/SCL SS MOSI/SDA MISO RES [email protected] Zentrum Mikroelektronik Dresden AG Global Headquarters Grenzstrasse 28 01109 Dresden, Germany ZMD America, Inc. 1525 McCarthy Blvd., #212 Milpitas, CA 95035-7453 USA Central Office: Phone +49.351.8822.306 Fax +49.351.8822.337 USA Phone 1.855.275.9634 Phone +1.408.883.6310 Fax +1.408.883.6358 European Technical Support Phone +49.351.8822.7.772 Fax +49.351.8822.87.772 DISCLAIMER: This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Zentrum Mikroelektronik Dresden AG (ZMD AG) assumes no obligation regarding future manufacture unless otherwise agreed to in writing. The information furnished hereby is believed to be true and accurate. However, under no circumstances shall ZMD AG be liable to any customer, licensee, or any other third party for any special, indirect, incidental, or consequential damages of any kind or nature whatsoever arising out of or in any way related to the furnishing, performance, or use of this technical data. ZMD AG hereby expressly disclaims any liability of ZMD AG to any customer, licensee or any other third party, and any such customer, licensee and any other third party hereby waives any liability of ZMD AG for any damages in connection with or arising out of the furnishing, performance or use of this technical data, whether based on contract, warranty, tort (including negligence), strict liability, or otherwise. European Sales (Stuttgart) Phone +49.711.674517.55 Fax +49.711.674517.87955 Zentrum Mikroelektronik Dresden AG, Japan Office 2nd Floor, Shinbashi Tokyu Bldg. 4-21-3, Shinbashi, Minato-ku Tokyo, 105-0004 Japan ZMD FAR EAST, Ltd. 3F, No. 51, Sec. 2, Keelung Road 11052 Taipei Taiwan Phone +81.3.6895.7410 Fax +81.3.6895.7301 Phone +886.2.2377.8189 Fax +886.2.2377.8199 Zentrum Mikroelektronik Dresden AG, Korea Office U-space 1 Building 11th Floor, Unit JA-1102 670 Sampyeong-dong Bundang-gu, Seongnam-si Gyeonggi-do, 463-400 Korea Phone +82.31.950.7679 Fax +82.504.841.3026 © 2014 Zentrum Mikroelektronik Dresden AG — Rev. 1.03— November 17, 2014. All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner.