IC-MHA hall angle encoder with sin/cos outputs am kuemmerling 18 ? d - 55294 bodenheim, germany tel. +49 6 1 35 / 9 2 9 2 -3 0 0 ? fax +49 6 1 35 / 9 2 9 2 -1 9 2 ? http://www.ichaus.com features ? sine/cosine differential outputs ? automatic gain control for 1 vpp differential signal amplitude ? operating speed from dc to 20 000 rpm ? loss-of-magnet detection and error messaging the IC-MHA is an integrated hall device for sensing the angular position of a diametral magnet. with the internal signal condi - tioning, sine and cosine components of the magnetic field direc - tion are available on buffered outputs. by using differential hall sensors for both sine and cosine sensing, the device is insensitive to homogenious magnetic stray fields. to compensate for variations in magnetic working distance, temperature and drift, the differential output signals are regu - lated to 1 vpp. the outputs are designed to drive differential resistive loads down to 100 ? . applications ? resolver replacement ? contactless rotary sensor / potentiometer ? absolute and incremental rotary encoders ? motor feedback
IC-MHA hall angle encoder with sin/cos outputs am kuemmerling 18 ? d - 55294 bodenheim, germany tel. +49 6 1 35 / 9 2 9 2 -3 0 0 ? fax +49 6 1 35 / 9 2 9 2 -1 9 2 ? http://www.ichaus.com rev. 1.0 key specifications general supply voltage 5 v 10 % supply current, no load 30 ma max. magnetic field strength 20 ... 100 ka/m operating speed of magnet dc to 20.000 rpm output drivers capability 1 vpp diff. to 100 ? operational temperature range -40 to +125 c esd susceptibility 2 kv (hbm 100 pf, 1.5 k ? ) angle accuracy typ. 0.2 degree (chip axis centered to field axis) angle repeatability typ. 0.1 degree this tentative information shall not be considered as a guarantee of characteristics. rights to technical changes reserved. pin functions no. name function 2 nerr error message output (active low) 3 vpa +5 v analog supply voltage 4 vna analog ground 10 pcout positive cosine output 11 ncout negative cosine output 18 vnd digital ground 19 vpd +5 v digital supply voltage 25 nsout negative sine output 26 psout positive sine output tp thermal-pad 8, 9 n.c. not connected 13, 14 n.c. not connected 23, 24 n.c. not connected 27, 28 n.c. not connected pins for device test and factory calibration: 1 pt1 connect to vnd 5 pt5 connect to vnd 6 pt6 connect to vpd 7 pt7 not to be connected 12 pt12 connect to vnd 15 pt15 connect to vnd 16 pt16 connect to vnd 17 pt17 connect to vnd 20 pt20 connect to vnd 21 pt21 connect to vnd 22 pt22 connect to vnd application example output signal vs. magnet position n s n s 22 23 24 25 26 27 28 22 23 24 25 26 27 28 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 21 20 19 18 17 16 15 21 20 19 18 17 16 15 0 > 0 v = v - v sin psout nsout v = v - v cos pcout ncout +0.5 v -0.5 v 360 90 180 270 -90 (top view) c041007-4 = 0 pin configuration qfn28 5x5 mm2 mha 22 23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 21 20 19 18 17 16 15 pt1 nerr vpa vna nc nc nc nc nc nc nc nc vpd vnd c301107-12 pcout psout nsout ncout pt12 pt22 pt15 pt16 pt17 pt20 pt21 pt7 pt6 pt5
|
