Magnetic Field Sensors ZMY20, ZMZ20 ZMY30, ZMZ30 package : E-Line (4-Pin) 1: +VO 2: -VB 3: -VO 4: +VB VO - output voltage VB - supply voltage package : SOT223S (4-Pin) 1: +VO 2: -VO 3: +VB 4: -VB VO - output voltage VB - supply voltage FEATURES * ZMZ20/30 (E-Line 4-Pin) and ZMY20/30 (SOT-223-S) are extremely sensitive magnetic sensors employing the magneto-resistive effect of thin film permalloy * Packages : E-Line 4-Pin and SOT-223-S * Output voltage proportional to the magnetic field Hy * Adjustment of sensitivity and suppression of the hysteresis by the auxiliary magnetic field Hx * Magnetic fields vertical to the chip level are not effective ABSOLUTE MAXIMUM RATINGS Parameter Symbol Unit Supply voltage ZMY20/ZMZ20 VB 12 V Supply voltage ZMY30/ZMZ30 VB 15 V Total power dissipation Ptot 120 mW Operating temperature range Tamb -40 to +150 C Storage temperature range Tstg -65 to +150 C Page 2 ZMY20/30, ZMZ 20/30 ELECTRICAL CHARACTERISTICS (at Tamb = 25 C and Hx = 3 kA/m unless otherwise stated) Parameter Bridge resistance ZMY20/ZMZ20 ZMY30/ZMZ30 Output voltage range ZMY20/ZMZ20 ZMY30/ZMZ30 Open circuit sensitivity ZMY20/ZMZ20 ZMY30/ZMZ30 Symbol Min. Typ. Max. 1.2 2.0 1.7 3.0 2.2 4.0 16 12 20 16 24 20 Rbr Unit Test conditions k VO/VB mV/V S 3.7 2.0 4.7 3.0 5.7 4.0 (mV/V)/(kA/m) no disturbing field Hd allowed Hysteresis of output voltage VOH/VB - - 50 V/V Offset voltage Voff/VB -1.0 - +1.0 mV/V fmax 0 - 1 MHz Temperature coefficient of offset voltage TCVoff -3 - +3 (V/V)/K Tamb = -25...+125C Temperature coefficient of bridge resistance TCRbr - 0.3 - %/K Tamb = -25...+125C Temperature coefficient of open circuit sensitivity VB = 5 V TCSV - -0.4 - %/K Tamb = -25...+125C Temperature coefficient of open circuit sensitivity I B = 3 mA TCSI - -0.1 - %/K Tamb = -25...+125C Operating frequency Devices are identified by a code on the body of the device ZMY20/ZMZ20 ..... M20 ZMY30/ZMZ30 ..... M30 Ordering information: ZMY20TA ..... 7" reel 1,000 components per reel ZMY20TC ..... 13" reel 4,000 components per reel ZMY30TA ..... 7" reel 1,000 components per reel ZMY30TC ..... 13" reel 4,000 components per reel ZMZ20 ........... bulk in box (2,000 components per box) ZMZ30 ........... bulk in box (2,000 components per box) Page 3 Hy 2 kA/m ZMY20/30, ZMZ 20/30 Application 1 (digital output) Application 2 (analogue output) Page 4 ZMY20/30, ZMZ 20/30 The sensor has to be reset after leaving the safe operating area by an auxiliary field of HX = 3 kA/m. Page 5 ZMY20/30, ZMZ 20/30 Page 6 ZMY20/30, ZMZ 20/30 In applications with HX < 3 kA/m, the sensor has to be reset by an auxiliary field of HX 3 kA/m before use. Page 7 ZMY20/30, ZMZ 20/30 Page 8