Datasheet ACS37800 (Allegro) - 7

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Isolated, Digital Output, Power Monitoring IC ACS37800 with Zero-Crossing Detection, Overcurrent and Overvoltage Flagging COMMON ELECTRICAL CHARACTERISTICS [1] (continued):
Valid through the full range of TA and VCC = VCC(typ), unless otherwise specified
Characteristic Symbol Test Conditions Min. Typ. Max. Unit CURRENT CHANNEL (continued)
RMS Noise NI Input referred – ±0.1 – A Linearity Error ELIN_I – ±1.5 – %
OVERCURRENT FAULT CHARACTERISTICS
Time from IP rising above IFAULT until VFAULT < VFAULT(max) for a current Fault Response Time tRF step from 0 to 1.2 × IFAULT; 10 kΩ and – 5 – μs 100 pF from DIO_1 to ground; fltdly = 0 Internal Bandwidth BW – 200 – kHz Fault Hysteresis [2] IHYST – 0.06 × FS – A Fault Range IFAULT Set using fault field in EEPROM 0.65 × FS – 2.00 × FS A
VOLTAGE ZERO CROSSING
Voltage Zero-Crossing Delay td – 250 – µs
DIO PINS
DIO Output High Level VOH(DIO) VCC = 3.3 V 3 – – V DIO Output Low Level VOL(DIO) VCC = 3.3 V – – 0.3 V DIO Input Voltage for Address Selection 0 VADD0 VCC = 3.3 V – 0 – V DIO Input Voltage for Address Selection 1 VADD1 VCC = 3.3 V – 1.1 – V DIO Input Voltage for Address Selection 2 VADD2 VCC = 3.3 V – 2.2 – V DIO Input Voltage for Address Selection 3 VADD3 VCC = 3.3 V – 3.3 – V [1] Device may be operated at higher primary current levels (IP), ambient temperatures (TA), and internal leadframe temperatures, provided that the maximum junction temperature (TJ(max)) is not exceeded. [2] After IP goes above IFAULT, tripping the internal fault comparator, IP must go below IFAULT – IHYST before the internal fault comparator will reset. 7 Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com Document Outline Features and Benefits Description Package Typical Application Selection Guide Absolute Maximum Ratings Isolation Characteristics ESD Ratings Thermal Characteristics Functional Block Diagram Pinout Diagram and Terminal List Electrical Characteristics 15B5 Performance Characteristics 30B3 Performance Characteristics 90B3 Performance Characteristics I2C Operating Characteristics SPI Operating Characteristics Theory of Operation Introduction Voltage and Current Measurements Overcurrent Measurement Path Trim Methods Power Calculations Operational Block Diagram Configurable Settings Configuring the DIO Pins (I2C Devices) Configuring the Device for AC Applications Device EEPROM Settings Voltage Measurement Current Measurement Configuring the Device for DC Applications Device EEPROM Settings Voltage Measurement Current Measurement RMS and Power Accuracy vs. Operation Point RMS and Power Output Error vs. Applied Input 15B5 IRMS and Power Error 30B3 IRMS and Power Error 90B3 IRMS and Power Error Digital Communication Communication Interfaces SPI Registers and EEPROM EEPROM Error Checking and Correction (ECC) I2C Slave Adressing EEPROM/Shadow Memory Map Register Details – EEPROM Volatile Memory Map Register Details - Volatile Application Information Thermal Rise vs. Primary Current ASEK37800 Evaluation Board Layout Recommended PCB Layout Package Outline Drawing