Holzer Integrated Sensor

With the development of microelectronics technology, most of the current Holzer elements are integrated, the upcoming Holzer element and the amplifying and shaping circuit integrated on the same chip, it has the advantages of small size, high sensitivity, low price, stable performance, etc.. Holzer integrated sensors are linear and switching type two.

1. linear Holzer integrated sensor

Linear type integrated sensor is Holzer Holzer element, constant current source and linear amplifier integrated on a chip, higher output voltage (kV), and the output voltage and the external magnetic field strength is linear in a certain range, it has a single output and double outputs (differential output circuit) two.

Holzer UGN3501M is a linear device with double end differential output, its shape and internal circuit diagram as shown in figure 9.1.10, figure 9.1.11 is the output characteristic curve, visible in the + 0.15T range of magnetic field intensity, good linearity, is saturated beyond this range; and the output polarity and magnetic field. When the magnetic field direction, feeling positive (the magnet S polar alignment UGN3501M positive), the output is positive; the magnetic field is reversed, the output is negative. Its fifth, sixth, seventh feet are connected with a compensating potentiometer to fine tune, which can eliminate the differential output zero drift caused by the unequal potential and improve the linearity.