ZSSC416x / Sensor Signal Conditioner Family ZSSC417x Feature Sheet Brief Description Benefits IDTs ZSSC416x/ZSSC417x is a family of CMOS SENT output option based on SAE J2716 Rev 3.0 integrated circuits for highly accurate amplification standard using fast and SDM data channels and sensor-specific correction of differential bridge Supports output of one or more sensor signals sensor signals. Featuring a maximum analog pre- and product identification via a single SENT amplification in the range of 150 to 200, this product interface connection is adjustable to nearly all resistive bridges as well as Configurable for nearly all resistive bridge sensors voltage source sensor types e.g., thermocouples. One-pass end-of-line calibration algorithm Digital compensation of offset, sensitivity, temper- minimizes production costs ature drift, and nonlinearity is accomplished with a No external trimming or components required 16-bit RISC microcontroller. Calibration coefficients IC interface option and configuration data are stored in the ZSSC416x/ ZSSC417x non-volatile memory (NVM), which is Available Support reliable in automotive applications. Evaluation Kit Measured values can be read via a digital SENT or 2 Application Notes I C* interface. The SENT interface enables trans- mission of sensor data via its fast channel as well as Calculation Tools supplementary data via its slow Serial Data Mes- sage (SDM) channel using only one output pin. End- Physical Characteristics 2 of-line calibration is supported via an I C interface Supply voltage: 4.75V to 5.25V or via a One-Wire Interface (OWI) through the data Protection up to +/-18V output pin (DOUT). The ZSSC416x/ ZSSC417x and Input span: 1 to 800 mV/V the calibration equipment communicate digitally, so Analog-to-digital (ADC) resolution: configurable the noise sensitivity is greatly reduced. Digital from 12 to 16 bit calibration helps keep assembly cost low as no trimming by external devices or lasers is needed. Large sensor offset correction using digital zooming with 14 to 18 bit resolution The ZSSC416x/ZSSC417x is optimized for automo- Output resolution: 12-bit via SENT interface up to tive environments by overvoltage and reverse 2 15-bit plus a sign bit for OWI or I C interface polarity protection circuitry, excellent electromag- netic compatibility, and multiple diagnostic features. Package: 4x4mm QFN24 or die Features Basic Circuit for Dual Bridge Applications Differential sensor bridge or voltage source inputs VCC Internal or external temperature sensors, select- able for conditioning of sensor input signals or temperature output Digital compensation of offset, gain, and higher SENT/OWI order nonlinearity as well as temperature ZSSC coefficients of measured sensor input signals 4165 SDA Operating temperature range: -40C to 150C SCL Accuracy: 0.25% FSO -40C to 125C NVM memory for configuration data, user con- GND figurable measurement and conditioning function, and user-selected data 2 * I C is a trademark of NXP 2016 Integrated Device Technology, Inc. 1 April 24, 2016 ZSSC416x / Sensor Signal Conditioner Family ZSSC417x Feature Sheet Example Block Diagram: ZSSC416x ZSSC416x SCL 2 TM I C SDA TS1 External PN VDDA Temp Sensor TOP NVM Mode BR1P Sensor Input ADC Bridge 1 Select Gain Mode TM Select RAM ZACwire BR1N DOUT MUX PGA ADC OWI SCCM Sensor BR2P CMC SENT Bridge 2 Interfaces BR2N Temp Analog ROM Sensor Frontend VDDE BOT POWER VDDA Digital Core VSSE TS2 VSSA External RTD/NTC VSSA ZSSC4162 Single Full Bridge, External RTD Temp Sensor SENT Application Example: Pressure and Temperature Sensor Sensor Bridge R SENT 5V module powered by the electronic control SENT/OWI BR1P DOUT unit (ECU) C LOAD BOT VSSE GND Sensor module with 3-pin connector provides BR1N C1 pressure and media temperature signal within VDDE VCC SENT frame TS1 Media temperature signal derived from TOP SCL SCL Serial Interface external RTD TS2 SDA SDA VDDA Temperature compensation via diode on pressure chip BR2P VSSA C2 External End-of-line calibration using the One Wire VDDA BR2N 1 RTD/NTC VSSA Interface (OWI) signal on the DOUT pin TM Additional IC interface option SENT Application Example: ZSSC4171 Thermocouple Sensor Thermocouple Measurement R SENT SENT/OWI BR1P DOUT 5V module with thermocouple interface C LOAD Supports different thermocouple types BOT EMC Filter VSSE GND Internal temperature sensor available for BR1N C1 cold-junction temperature compensation VDDE VCC TS1 Thermocouple input diagnostic tests VSSA SCL TOP Reports thermocouple measurement as a single-secure message and reports room SDA TS2 temperature measurement through SDM BR2P VSSA channel on SENT C2 BR2N VDDA 1 End-of-line calibration using the OWI signal on the DOUT pin 2016 Integrated Device Technology, Inc. 2 April 24, 2016 ZSSC4162 ZSSC4171