Hall-Effect Current Transducers with Analog Output

CUR 3105 and CUR 3115 represent the first members of the new Micronas product group of Hall-effect-based current transducers .They can be used for very precise cur- rent measurements. The output voltage is proportional to the measured current and the supply voltage (ratiometric analog output) . Major characteristics, such as magnetic field range, sensitivity, output quiescent voltage (output voltage at B=0 mT) and output voltage range are programmable and are stored in the internal EEPROM.
CUR 3105 and CUR 3115 feature a temperature-compensated Hall plate with choppered offset compensation, an A/D converter, digital signal processing, a D/A converter with output driver, an EEPROM memory with redundancy and lock function, a serial programming interface, and protection devices at all pins. The internal digital signal processing is of great benefit because analog offsets, temperature shifts and mechanical stress do not degrade the transducer’s accuracy.
CUR 3105 and CUR 3115 are programmable by modulating the supply voltage . No additional programming pin is needed. Individual adjustment of each transducer dur- ing the customer’s manufacturing process is possible. With this calibration procedure, the tolerances of the IC and the mechanical positioning can be compensated in the final assembly.
The transducers are designed for automotive, white goods and industrial applications and operates with typically 5 V supply voltage in the wide junction temperature range from −40 °C up to 170 °C.
The CUR 3105 is available in the very small leaded package TO92UT and the SMD package SOIC8, whereas the CUR 3115 is available in the SOIC8 only.