ah342 a ctive high/low complementary output hall-effect latch ah342 rev. 3 1 of 8 january 2009 www.diodes.com ? diodes incorporated lead-free ? digital dual complementary sink/source outputs ? reverse voltage polarity protection for full supply range. ? high output current capability ? low profile packages: sip-4l ? lead free package: sip-4l ? lead free finish/rohs compliant (note 1) the ah342 is a bipolar latching hall ic with a pair of complementary push/pull outputs. a dual hall element is used to offset stress induced noise and drift. the robust outputs are capable of sourcing up to 7.4ma and sinking up to 4.4ma. the device contains inherent reverse polarity protection up to the full power supply range. ? conveyors ? motor control ? power sensing ? linear or rotary motion detection ? rpm sensing ah 342 - p l - b p : sip-4l package lead free l : lead free packing b : bulk device package code packaging (note 2) bulk quantity part number suffix AH342-PL-b p sip-4l 1000 -b notes: 1. eu directive 2002/95/ec (rohs). all applicable rohs exemptions applied. please visit our website at http://www.diodes.com/products/lead_free.html . 2. pad layout as shown on diodes inc. suggested pad layout document ap02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf . features general description applications ordering information
ah342 a ctive high/low complementary output hall-effect latch ah342 rev. 3 2 of 8 january 2009 www.diodes.com ? diodes incorporated 342 12 4 3 1 : vcc 2 : do 3 : dob 4 : vss ( top view ) sip-4l pin assignments pin descriptions pin name description v cc positive power supply do output pin dob output pin v ss ground nc no connect
ah342 a ctive high/low complementary output hall-effect latch ah342 rev. 3 3 of 8 january 2009 www.diodes.com ? diodes incorporated block diagram 660 510 output amp 7.5v source sink i o voltage regulator hall sensor amp and trigger interface circuit output amp #1 output amp #2 io 1 io 2 absolute maximum ratings (note 3) symbol characteristics conditions rating unit v cc supply voltage -40 o c to 125 o c 28 v v out voltage externally applied to output -40 o c to 125 o c -1.2 to 5 v ic output current 10 ma b magnetic flux density no limit; the circuit cannot be damaged by magnetic overdrive unlimited t st storage temperature no power applied -40 to 150 c notes: 3. absolute maximum ratings are the extreme limits that the device will withstand without damage to the device. howev er, the electrical and magnetic characteristics are not guaranteed as the maximum limits (above recommended operating conditions) are appr oached nor will the device necessarily operate at absolute maximum rating.
ah342 a ctive high/low complementary output hall-effect latch ah342 rev. 3 4 of 8 january 2009 www.diodes.com ? diodes incorporated recommended oper ating conditions symbol characteristic conditions min max unit v cc supply voltage operating 4.5 28 v t a operating ambient temperature (note 4) operating -40 125 c notes: 4. shall not exceed p d and safety operation area. electrical characteristics (note 5, 6) symbol characteristic conditions 24 o c 2 o c -40 o c to 125 o c units min typ. max min typ. max i cc supply current 28v0.5% supply 4 4.5 6 3 4.5 7 ma output voltage v out #1 sourcing switch magnetically operated: no load 28v0.5% supply. switch magnetically released: no load 28v0.5% supply. 6.0 7.0 7.5 - - - v #2 sinking 0 0.1 0.2 - - - #1 sinking 0 0.1 0.2 - - - #2 sourcing 6.0 7.0 7.5 - - - i leak(sink) leakage (sink) apply voltage 0.2v greater than measured output source voltage measure current, no load 28v0.5% supply. - - 1.0 - - 1.0 a output current i out #1 sourcing apply 2v to output and measure current. switch magnetically operated, no load 28v0.5%. apply 2v to output and measure current. switch magnetically released, no load 28v0.5%. 5.5 7.4 8.0 5.0 7.4 8.5 ma #2 sinking 2.8 3.4 4.7 2.4 3.4 5.0 #1 sinking 2.8 3.4 4.7 2.4 3.4 5.0 #2 sourcing 5.5 7.4 8.0 5.0 7.4 8.5 output switching time tf fall time 90% to 10%; no load 28v0.5% supply - - - - - 1.0 s tr rise time 10% to 90%; no load 28v0.5% supply - - - - - 1.0
ah342 a ctive high/low complementary output hall-effect latch ah342 rev. 3 5 of 8 january 2009 www.diodes.com ? diodes incorporated magnetic characteristics (t a = +25 c) (note 5, 6) ( 1mt = 10 gauss ) symbol characteristic 24 o c 2 o c vs=12vdc 0.5%vdc -40 o cto 125 o c vs=4.5vdc to 28vdc unit min max min max bop operate point 40 120 30 150 gauss brp release point -120 -40 -150 -30 gauss bhy hysteresis 120 200 120 200 gauss notes: 5. all the parameters are tested under the 25 o c only. the operation temperature (-40 o c to 125 o c) is guaranteed by design, it is typical value. 6. the magnetic field strength (gauss) required to cause the switch to change state (operate and release) will be as specified in the magnetic characteristics. to test the switch against the specified magnetic characteristics the switch must be placed in a uniform magnetic field. b hy v sat v cc ( output voltage ) b rp b op 0 s n ( magnetic flux density b ) do turn on turn off ( off-state ) ( on-state ) b hy v sat v cc ( output voltage ) b rp b op 0 s n ( magnetic flux density b ) dob turn off turn on ( off-state ) ( on-state ) performance characteristics t a ( c) 25 50 60 70 80 85 90 95 100 p d (mw) 550 440 396 352 308 286 264 242 220 t a ( c) 105 110 115 120 125 130 135 140 150 p d ( mw ) 198 176 154 132 110 88 66 44 0 power dissipation curve 0 100 200 300 400 500 600 0 25 50 75 100 125 150 t a ( c) p d (m w )
ah342 a ctive high/low complementary output hall-effect latch ah342 rev. 3 6 of 8 january 2009 www.diodes.com ? diodes incorporated operating characteristics marking side s b hy v sat v cc ( output voltage ) v d b rp b op 0 s n ( magnetic flux density ) do high low n ( sip-4l) marking information 342 part number ( top view ) y ww x x : internal code : a~z : lead free y : year : 0~9 ww : week : 01~52, " 52" represents 52 and 53 week
ah342 a ctive high/low complementary output hall-effect latch ah342 rev. 3 7 of 8 january 2009 www.diodes.com ? diodes incorporated package information (all dimensions in mm) (1) package type: sip-4l active area depth sensor location marking side 0.7mm 1. 1 ? 0.1mm 1234 1.95 ? 0.1mm package dimension
ah342 a ctive high/low complementary output hall-effect latch ah342 rev. 3 8 of 8 january 2009 www.diodes.com ? diodes incorporated important notice life support diodes incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or ot her changes without further notice to any product herein. diodes incorporated does not assume any liability arising out of the application or use of any pr oduct described herein; neither does it convey any license under its patent rights, nor the rights of others. the user of products in such applications shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on our website, harmless against all dam ages. diodes incorporated products are not authorized for use as critical components in life support devices or systems without the e xpressed written approval of the president of diodes incorporated.
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