IC-MH8 12 bit hall encoder am kuemmerling 18 ? d-55294 bodenheim, germany phone: +49 (6135) 9292-300 ? fax: +49 (6135) 9292-192 ? http://www.ichaus.com features ? automatic signal conditioning with manual fine control ? analog output drivers (1 vpp to 100 ) ? 12 bit realtime interpolation for 120 000 rpm: binary factors of 1, 2, 4, ..., 256, 512, 1024 commutation signals for 2, 4 and 8 pole motors independent zero positions for abz or uvw ? incremental output frequency of up to 2 mhz ? rs422 output driving stages for abz and uvw ? biss c int. for singleturn position and programming ? integrated zapping diodes for permanent storage ? device setup and oem data programmable ? error output (loss of magnet, frequency error), error codes accessible via biss interface ? extended temperature range -40 c to +125 c the IC-MH8 is an integrated hall encoder for sensing the angular position of a diametral magnet. the amplified hall voltages are available as complementary analog sine and cosine signals with regulated 1 vpp differential amplitude. the interpolator can be set to binary interpolation factors from 1 to 1024 to achieve up to 4096 angle steps per revolution. abz quadrature signals up to a rate of 2 mhz are available at the incremental outputs, permitting 120 000 rpm at the highest resolution. the position of the index pulse z is adjustable. for block commutation pins u, v and w provide three phase- shiftet output signals. the starting angle is freely definable over a revolution. brushless motors with 1, 2 or 4 pole pairs of poles can be operated. the incremental and commutation outputs are rs422 compatible and can be adjusted in output current and slew rate. using the serial interface the output data can be transmitted serially and allows also access to the internal memory of IC-MH8. the configuration and internal parameters can then be stored permanently in a zapping diode based rom. s n 22 a b z u v w bb b b logic conversion phase shift test error monitor incr interface sine-to-dig sine-to-com hall sensor ampl control ram bias/vref zaprom rs422 zap control 16 byte zrom 0x00 0x7f sin + cos amplitude correction interface serial 0x0f 0x10 0x1f 0x77 + 5v + 5v c061010-3 pcout ncout psout nsout a b z u v w 0 0 120 240 binary interpolation factors 1, 2, 4, ... 256, 512, 1024 two, four and eight pole commutating signals loss of magnet, frequency error data, programming programming voltage test 360 180 angular position IC-MH8 vna1 vna2 vzap vnd vpa pte ma slo sli nerr vpd psout analog output signals pcout nsout ncout sine / cosine outputs 0.5 v applications ? electronic commutation of brushless motors ? contactless rotary switch / digital potentiometer ? absolute and incremental rotary encoders ? motor feedback / resolver replacement
IC-MH8 12 bit hall encoder am kuemmerling 18 ? d-55294 bodenheim, germany phone: +49 (6135) 9292-300 ? fax: +49 (6135) 9292-192 ? http://www.ichaus.com rev. 1.0 pin functions no. name function 1 pte test enable pin 2 nerr not error (active low) 3 vpa +5 v analog supply voltage 4 vna1 analog ground 5 sli serial data input 6 ma serial clock input 7 slo serial data output 8, 9, 14 n.c. not connected 10 pcout positive cosine output 11 ncout negative cosine output 12 vzap zapping supply voltage 13 vna2 analog ground 15, 16, 17 a, b, z incremental outputs a, b, index z 18 vnd digital ground 19 vpd +5 v digital supply voltage 20, 21, 22 u, v, w commutation signal u, v, w 25 nsout negative sine output 26 psout positive sine output 23, 24, 27, 28 n.c. not connected this preliminary information is not tantamount to a guarantee of device characteristics. all rights to technical changes reserv ed. pin configuration qfn28 5x5 mm2 mh8 22 23 24 25 26 27 28 1 2 3 4 5 6 7 8 910 11 12 13 14 21 20 19 18 17 16 15 pte nerr vpa vna1 vna2 sli ma slo v w nc nc nc nc nc nc nc vzap u vpd vnd z b a c061010-1 pcout psout nsout ncout key specifications general supply voltage 5 v +/-10 % supply current, normal mode power reduction mode 40 ma max. 32 ma max. max. rotation speed 120,000 rpm magnetic field strength 20 ... 100 ka/m resolution (digital / angular) 12 bit / 0.087 operational temperature range -40 to +125 c esd susceptibility 2 kv (hbm 100 pf, 1.5 k ) operational modes output modes abz and uvw abz and inverted abz uvw and inverted uvw abz and ab period signals interpolating factors @ ab 1...128, 256, 512, 1024 commutation signals uvw two, four and eight pole ec motors analog outputs complementary sine / cosine driver settings (abz, uvw) output drivers capabilities 10 mhz 4 ma (default) 10 mhz 50 ma 300 khz 50 ma 3 mhz 20 ma output driving configurations push-pull, high-side, low-side, tristate signal settings analog signal outputs gross gain selection fine gain (automatic gain off) sin/cos amplitude ratio offset correction range hysteresis abz zero positions abz/uvw 0.5 vpp with gain control 5, 10, 15, 20 64 steps, from 1.0 to 19.08 0.91 ...1.097 (128 steps) 63 mv in 1mv steps 0.17, 0.35, 0.7 and 1.4 adjustable in increments of 1.4 serial interface biss c bidirectional, data read out and programming ssi data read out only (ssi 13 bit standard) application example ec motor programmable position z a b incremental IC-MH8 magnet abz power motor controller application feedback sin, cos sin, cos uvw output signal examples
|
