可编程线性霍尔

我公司研发生产的可编程式霍尔元件

Description
The ST1815 is an universal magnetic field sensor with a linear output based on the Hall effect. The IC is designed and produced in sub-micron CMOS technology if combined with a rotating or moving magnet. The major characteristics like magnetic field range, sensitivity, output quie-
scent voltage (output voltage at B = 0 mT), and output voltage range are programmable in a non-volatile memory. The sensor has a ratio- metric output characteristic, which means that the out- put voltage is proportional to the magnetic flux and the supply voltage.
Applications
– contactless potentiometers
– Rotary position measurement
– Linear movement
– Level measurement
– angle sensors
– distance measurements
– magnetic field and current measurement
Features
– high-precision linear Hall effect sensor with ratiometric output and digital signal processing
– multiple programmable magnetic characteristics in a non-volatile memory (EEPROM) with redundancy and lock function
– open-circuit (ground and supply line break detection), overvoltage and under-voltage detec
tion
– for programming an individual sensor within several sensors in parallel to the same supply voltage, a selection can be done via the output pin – to enable programming of an individual sensor amongst several sensors running parallel to the same supply voltage, each sensor can be selected via its output pin
–temperature characteristics are programmable for matching all common magnetic materials
– programmable clamping function
– programming through a modulation of the supply voltage
– operates from ?40 °C up to 150 °C ambient temperature
– operates from 4.5 V up to 5.5 V supply voltage in specification and functions up to 8.5 V
– total error < 2.0% over operating voltage range and temperature range
– operates with static magnetic fields and dynamic magnetic fields up to 2 kHz
– overvoltage and reverse-voltage protection at all pins
– magnetic characteristics extremely robust against mechanical stress
– short-circuit protected push-pull output
– EMC and ESD optimized design
Absolute Maximum Ratings
Device Characteristics
Electrical Characteristics; Vcc=5V, unless otherwise noted
Characteristics
Symbol
Test Conditions                       Min.           Typ.             Max.      Units
Supply Voltage
Vcc(op)Tj<165°C                      4.5             5               5.5          V

Supply Current   Icc   B=0                           4.5                          m A
Output Voltage
Vh   B=+X                                            4.65              4.8         V
Vl   B=-X                             0.2            0.35                          V
Output Source Current Limit
      Iout(LMT)      B>0                              -2                          m A
Characteristic                  Symbol                 Rating                      Units
Supply Voltage                    VDD                    8.5                        V
Output Voltage                    Vout                   8.5                        V
Output Sink Current               Iout                    10                       m A
Operating Ambient Temperature       Ta                  -40--150                   ℃

Maximum Junction Temperature        Tj                    160                      ℃
Storage Temperature                Tstg                   150                      ℃