Allegro MicroSystems CT431
TMR Current Sensor
FEATURES AND BENEFITS
● Integrated contact current sensing for low to medium current ranges: □ 0 to 20 A □ ±20 A □ 0 to 30 A □ ±30 A □ ±40 A □ 0 to 50 A □ ±50 A □ 0 to 65 A □ ±65 A● Integrated current carrying conductor (CCC)
● Linear analog output voltage
● Total error output ≤ ±1.0% FS, –40°C to 125°C
● 1 MHz bandwidth
● Response time: ~300 ns
● UL/IEC 62368-1 and UL1577 certification □ Rated isolation voltage: 5 kVRMS □ Working voltage for basic isolation: 1100 VRMS □ Working voltage for reinforced isolation: 550 VRMS
● Low noise: 9.5 to 19.0 mARMS @ fBW = 100 kHz
● Reference voltage output
● Immunity to common mode fields: –54 dB
● Supply voltage: 3.0 to 3.6 V
● Overcurrent detection □ Out of range currents
● AEC-Q100 grade 1 PACKAGE: Not to scale 16-lead SOICW
DESCRIPTION
The CT431 is a high bandwidth and ultra-low noise integrated contact current sensor that uses Allegro patented XtremeSense™ TMR technology to enable high accuracy current measurements for many industrial, consumer, and automotive applications.