ZSSC4151CE5R Renesas

ZSSC4151 Automotive Sensor Signal Conditioner with Analog Output Datasheet Contents 1 Brief Description ............................................................................................................................................... 2 2 Electrical Characteristics .................................................................................................................................. 3 2.1. Absolute Maximum Ratings ....................................................................................................................... 3 2.2. Operating Conditions ................................................................................................................................. 4 2.3. Electrical Parameters ................................................................................................................................ 5 2.3.1. Supply Current and System Operation Conditions ............................................................................. 5 2.3.2. Analog Front-End Characteristics ....................................................................................................... 5 2.3.3. Temperature Measurement ................................................................................................................ 5 2.3.4. Sensor Diagnostics ............................................................................................................................. 6 2.3.5. A2D Conversion .................................................................................................................................. 6 2.3.6. DAC and Analog Output (AOUT Pin) .................................................................................................. 6 2.3.7. System Response ............................................................................................................................... 7 2.4. Interface Characteristics and Nonvolatile Memory .................................................................................... 8 2 TM 2.4.1. I C Interface ..................................................................................................................................... 8 2.4.2. ZACwire One-Wire Interface (OWI at AOUT pin) ............................................................................ 8 2.4.3. Nonvolatile Memory (NVM) ................................................................................................................. 9 3 ESD Protection and EMC Specification ......................................................................................................... 10 3.1. ESD Protection ........................................................................................................................................ 10 3.2. Latch-Up Immunity .................................................................................................................................. 10 3.3. Electromagnetic Emission ....................................................................................................................... 10 3.4. Conducted Susceptibility (DPI) ................................................................................................................ 10 4 Reliability and RoHS Conformity .................................................................................................................... 11 5 Glossary ......................................................................................................................................................... 11 6 Document Revision History ............................................................................................................................ 12 List of Figures Figure 1.1 ZSSC4151 Block Diagram .................................................................................................................. 2 List of Tables Table 2.1 Absolute Maximum Ratings ................................................................................................................ 3 Table 2.2 Operating Conditions .......................................................................................................................... 4 Table 2.3 Electrical Parameters .......................................................................................................................... 5 Table 2.4 Interface Characteristics and Nonvolatile Memory ............................................................................. 8 Table 3.1 Conducted Susceptibility (DPI) Tests ............................................................................................... 10 2016 Integrated Device Technology, Inc. 1 April 20, 2016 ZSSC4151 Datasheet 1 Brief Description The ZSSC4151 sensor signal conditioner (SSC) is a CMOS integrated circuit for highly accurate amplification and sensor-specific correction of bridge sensor signals. Digital compensation of sensor offset, sensitivity, temperature drift, and non-linearity is accomplished via an internal 16-bit RISC microcontroller running a correction algorithm with calibration coefficients stored in an EEPROM. The ZSSC4151 is adjustable to nearly all bridge sensor types. Measured values are provided at the analog 2 voltage output and at the digital I C* or ZACwire interface, also referred to as the One-Wire Interface (OWI). The digital interfaces can be used for a simple PC-controlled calibration procedure in order to program a set of calibration coefficients into an on-chip EEPROM. The specific sensor and the ZSSC4151 can be quickly calibrated together. The ZSSC4151 and the calibration equipment communicate digitally, so the noise sensitivity is greatly reduced. Digital calibration helps keep assembly cost low as no trimming by external devices or lasers is needed. The ZSSC4151 is optimized for automotive environments by overvoltage and reverse-polarity protection circuitry, excellent electromagnetic compatibility, full automotive temperature range, and multiple diagnostic features. Figure 1.1 provides a block diagram of the ZSSC4151. Refer to section 5 for definitions of abbreviations. Figure 1.1 ZSSC4151 Block Diagram SCL ZSSC4151 2 TM I C SDA TS1 External PN VDDA Temp Sensor Power TOP Management VSSA NVM Mode Input ADC Select Gain BR1P Mode Sensor TM Select RAM ZACwire Bridge AOUT MUX PGA ADC OWI SCCM DAC / CMC BAMP BR1N Interfaces Analog Temp Front-End ROM Sensor VDDE (AFE) Overvoltage BOT Protection Digital Core VSSE Alternate External TS2 Temperature Sensor 2 2 * I C is a trademark of NXP. 2016 Integrated Device Technology, Inc. 2 April 20, 2016