High End 24-Bit Sensor Signal ZSSC3224 Conditioner IC Datasheet Brief Description Features The ZSSC3224 is a sensor signal conditioner (SSC) IC for high- Flexible, programmable analog front-end design up to 24-bit accuracy amplification and analog-to-digital conversion of a differ- analog-to-digital converter (ADC) ential or pseudo-differential input signal. Designed for high resolu- Fully programmable gain amplifier for optimizing sensor tion sensor module applications, the ZSSC3224 can perform offset, signals: gain range 6.6 to 216 (linear) st nd span, and 1 and 2 order temperature compensation of the Internal auto-compensated 18-bit temperature sensor measured signal. Developed for correction of resistive bridge or st nd Digital compensation of individual sensor offset 1 and 2 absolute voltage sensors, it can also provide a corrected tempera- st order digital compensation of sensor gain as well as 1 and ture output measured with an internal sensor. nd 2 order temperature gain and offset drift The measured and corrected sensor values are provided at the Programmable interrupt operation digital output pins, which can be configured as I2C ( 3.4MHz) or High-speed sensing: e.g., 18-bit conditioned sensor SPI ( 20MHz). Digital compensation of signal offset, sensitivity, -1 signal measurement rate >200s temperature, and non-linearity is accomplished via a 26-bit internal digital signal processor (DSP) running a correction algorithm. Typical sensor elements can achieve an accuracy of better Calibration coefficients are stored on-chip in a highly reliable, non- than 0.10% full scale output (FSO) at -40 to 85C volatile, multiple-time programmable (MTP) memory. Programming Integrated 26-bit calibration math digital signal the ZSSC3224 is simple via the serial interface. The interface is processor (DSP) used for the PC-controlled calibration procedure, which programs Fully corrected signal at digital output the set of calibration coefficients in memory. The ZSSC3224 Layout customized for die-die bonding with sensor for high- provides accelerated signal processing, increased resolution, and density chip-on-board assembly improved noise immunity in order to support high-speed control, safety, and real-time sensing applications with the highest One-pass calibration minimizes calibration costs requirements for energy efficiency. No external trimming, filter, or buffering components required Highly integrated CMOS design Applications Integrated reprogrammable non-volatile memory Barometric altitude measurement for portable navigation or Excellent for low-voltage and low-power battery applications emergency call systems altitude measurement for car Optimized for operation in calibrated resistive navigation (e.g., pressure) sensor or calibrated absolute voltage (e.g., Weather forecast thermopile) sensor modules Fan control Supply voltage range: 1.68V to 3.6V Industrial, pneumatic, and liquid pressure Operating mode current: ~1.0mA (typical) High-resolution temperature measurements Sleep Mode current: 20nA (typical) Object-temperature radiation (via thermopile) Temperature resolution: <0.7mK/LSB Excellent energy-efficiency: ZSSC3224 Application Example with 18-bit resolution: <100pJ/step VSS with 24-bit resolution: <150nJ/step VDD VDD Small die size Stacked-Die Sensor Module Operation temperature: 40C to +85C VDD ZSSC3224 SS Delivery options: 4.0mm x 4.0mm 24-PQFN and die for wafer VSS VSS bonding VDDB INP(+) SS MOSI SDA RES RES INP VDDB sensor element SCLK SCL Microcontroller VSSB INN EOC EOC MOSI INN(-) VSSB SDA MISO MISO SCLK SCL 2018 Integrated Device Technology, Inc 1 November 12, 2018 Signal Output / Post-processingZSSC3224 Datasheet ZSSC3224 Block Diagram VDDB Vreg int VTP VDD Temperature AGND / CM Bias Current Reference Voltage Regulator Generator Generator V TN Sensor Power Ctr. VSS ZSSC3224 DSP Core A EOC (Calculations, INP D Sensor Communication) 24 Bit INN Pre-amplifier Bridge VSSB SCLK/SCL SS SPI MOSI/SDA System MISO Clock MTP Power-ON Control I2C Generator RES Reset Unit Oscillator 2018 Integrated Device Technology, Inc 2 November 12, 2018 Multiplexer