datasheet v1.0a 1/5 TMR1201 tmr bipolar switch general description the TMR1201 is a digital latching bipolar magnetic switch that integrates tmr and cmos technol ogy in order to provide a magnetically triggered digital sw itch with high sensitivity, hi gh speed, and low power consumpt ion. it integrates a push-pull half-bridge tmr magnetic sensor and cmos signal processing circ uitry within the same package. designed for use in high accuracy applications, this device includes an on-chip tmr volt age generator for precise magnetic sensing, tmr voltage amplifier and comparator, a schmitt trigger to provide switchin g hysteresis for noise rejection, and cmos push-pull output. an internal band gap regulator is used to provide temperature comp ensated supply voltage for internal circuits, and it allows a w ide range of operating supply volta ges. the TMR1201 features accura te switching points, fast response, a wide operating temperature range, and excellent esd immunity. it is available in two packaging form factors: sot23-3 (p/n TMR1201s), or to-92s (p/n TMR1201t). features and benefits ? tunneling magnetoresist ance (tmr) technology ? bipolar latching operation ? low operate points for high sensitivity ? very low power consumption ? compatible with a wide range of supply voltages ? excellent thermal stability ? high-speed detection a nd high frequency response ? high esd tolerance applications ? utility meters including water, gas, and heat meters ? solid state switching ? speed sensing ? rotor position sensing ? linear displacement sensing TMR1201s(left), TMR1201t(right)
datasheet v1.0a 2/5 block diagram pin configuration pin name pin no. pin function to-92s sot23-3 v out 1 2 output gnd 2 3 ground v cc 3 1 supply voltage to-92s sot23-3 absolute maximum ratings parameter symbol limit unit supply voltage v cc 7 v reverse supply voltage v rcc 0.4 v output current i outsink 10 ma magnetic flux density b 1200 g esd level(hbm) v esd 6.5 kv operating temperature t a -40 ~125 c storage temperature t stg -50 ~ 150 c electrical characteristics (v cc =3.0v, t a =25 c ) parameter symbol conditions min typ. max unit supply voltage v cc operating 1.8 3.0 5.5 v output high voltage v oh vcc-0.3 vcc v output low voltage v ol 0 0.2 v supply current i cc output open 3.4 5 a response frequency f 1 khz power-on time t po 200 s note: a 0.1f capacitor is connected between v cc and gnd during all tests in the above table.
datasheet v1.0a 3/5 magnetic characteristics (v cc = 3.0v, t a = 25 c ) parameters symbol min typ. max units operate point b op 10 15 20 g release point b rp -20 -15 -10 g hysteresis b h 30 g voltage and temperature characteristics output behavior vs. magnetic pole parameter test conditions output south pole b > b op low (on) north pole b < b rp high (off) note: when power is turned on under zero magnetic field, the output is high. sensing direction of magnetic field magnetic flux application information the output of the TMR1201 switches low (turns on) when a magnet ic field parallel to the tmr sensor exceeds the o perate point t hreshold, b op . when the magnetic field is reduced below the release point, b rp , the device output goes high (turns off). the differences between the magnetic operate poi nt and release point is the hys teresis b h of the device. it is strongly recommended that an external bypass capacitor be connected in close proximity to the device between the supply and ground to reduce noise and improve switching accuracy. the typical value of the external c apacitor is 0.1f. ?
datasheet v1.0a 4/5 package information sot23-3 package drawing to-92s package drawing tmr sensor position top view and side view (unit: mm)
datasheet v1.0a 5/5 multidimension technology co., ltd. address:no.7 guangdong road, zhangjiagang free trade zone, jian gsu, 215634, china web: www.dowaytech.com/en email: info@dowaytech.com the information provided herein by multidimension technology co ., ltd. (hereinafter multidimensi on) is believed to be accurate and reliable. publication neither conveys nor implies any license under paten t or other industrial or intellec tual property rights. multidim ension reserves the right to make changes to product specifications for the purpose of improving product quality, reliability, and functionality. multidimension does not assume any liability arising out of the application and use of its products. multidimensions cu stomers using or selling this product for use in appliances, devices, or systems where malfunction can reasonabl y be expected to result in personal injury do so at their own r isk and agree to fully indemnify multidimensi on for any damages resulting from s uch applications.
|
