Allegro MicroSystems CT432 & CT433 XtremeSense® TMR Current Sensors

Allegro MicroSystems CT432 and CT433 XtremeSense® TMR Current Sensors are integrated contact current sensors with high bandwidth and ultra-low noise. The Allegro MicroSystems CT432 and CT433 utilize Crocus Technology’s XtremeSense® TMR technology. XtremeSense provides precise current measurements for various consumer, enterprise, and industrial uses, supporting multiple current ranges up to 65A. The sensor delivers a linear analog output voltage with a total output error of less than ±1.0% full-scale (FS) over the supply voltage and temperature range. The devices boast a 300ns output response time, 6.0mA current consumption, and immunity to common mode fields. Optimized for high dV/dt applications, the sensors minimize capacitive coupling to V_OUTfor switching applications.

Features

Integrated contact current sensing for low to medium current ranges
- 0A to +20A
- -20A to +20A
- 0A to +30A
- -30A to +30A
- -40A to +40A (CT433)
- 0A to +50A
- -50A to +50A
- 0A to +65A
- -65A to +65A
Optimized for high dV/dt applications
Integrated Current Carrying Conductor (CCC)

Linear analog output voltage
Total error output ≤±1.0% FS, -40°C to +125°C
1MHz bandwidth
~300ns response time
UL/IEC 62368-1 and UL1577 certification
- 5kV_RMS rated isolation voltage
- 1287V_RMSworking voltage for basic isolation
- 647V_RMS working voltage for reinforced isolation
IEC 61000-4-5 certified
9mA_RMS to 15mA_RMS at fBW = 100kHz low noise
-54dB immunity to common mode fields
4.75V to 5.50V supply voltage
AEC-Q100 grade 1 (under qualification)