ah1822 micropower omnipolar hall-effect sensor switch ah1822 rev. 5 1 of 9 february 2009 www.diodes.com ? diodes incorporated ? micropower operation ? operation with magnetic field of either north or south pole (omnipolar) ? 2.5v to 5.5v battery operation ? chopper stabilized ? superior temperature stability ? extremely low switch-point drift ? insensitive to physical stress ? good rf noise immunity ? -40 c to 85 c operating temperature ? esd (hbm) 5kv ? dfn2015-6 and dfn3020-6: available in ?green? molding compound (no br, sb) ? lead free finish/ rohs compliant (note 1) ah1822 is comprised of two hall effect plates and an open-drain output driver, mainly designed for battery-operation, hand-held equipment (such as cellular and cordless phone, pda). the total power consumption in normal operation is typically 24 w with a 3v power source. either north or south pole of sufficient strength will turn the output on. the output will be turned off under no magnetic field. while the magnetic flux density (b) is larger than operating point (bop) , the output will be turned on (low), the output is held until b is lower than release point (brp), then turned off. applications ? cover switch in clam-shell cellular phones ? cover switch in notebook pc/pda ? contact-less switch in consumer products ordering information ah 1822 - xxx g - 7 packing green 7 : tape & reel g : green package ft4 : dfn2015-6 fu4 : dfn3020-6 device package code packaging (note 2) 7? tape and reel quantity part number suffix AH1822-FT4G-7 ft4 dfn2015h4-6 3000/tape & reel -7 ah1822-fu4g-7 fu4 dfn3020h4-6 3000/tape & reel -7 notes: 1. eu directive 2002/95/ec (rohs). all applicable rohs exemptions applied, see eu directive 2002/95/ec annex notes . 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
ah1822 micropower omnipolar hall-effect sensor switch ah1822 rev. 5 2 of 9 february 2009 www.diodes.com ? diodes incorporated output dfn2015-6 3 ( top view ) nc gnd gnd nc vdd 2 1 4 5 6 output dfn3020-6 1 2 3 6 5 4 ( top view ) nc gnd gnd nc vdd notes: 3. nc is ?no connection? which is recommended to be tied to ground. pin name p/i/o description vdd p/i power supply input gnd p/i ground output o output pin nc nc no connected output gnd logical latch latch power switch vdd hall plate amp offset cancelling hall plate amp offset cancelling pin assignments pin descriptions block diagram
ah1822 micropower omnipolar hall-effect sensor switch ah1822 rev. 5 3 of 9 february 2009 www.diodes.com ? diodes incorporated ah1822 2.5~5.5v output gnd r l c notes: 4. c is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nf~100nf. r l is the pull-up resistor, the recommended resistance is 10k ? ~100k ? . absolute maximum ratings (at t a = 25 q c) symbol characteristics values unit vdd supply voltage 7 v b magnetic flux density unlimited t st storage temperature range -65 to +150 q c p d package power dissipation 230 mw t j maximum junction temperature 150 q c symbol parameter conditions rating unit vdd supply voltage operating 2.5~5.5 v t a operating temperature range operating -40 to +85 q c typical circuit recommended oper ating conditions
ah1822 micropower omnipolar hall-effect sensor switch ah1822 rev. 5 4 of 9 february 2009 www.diodes.com ? diodes incorporated symbol characteristic conditions min typ. max unit vout output on voltage iout=1ma ? 0.1 0.3 v ioff output leakage current vout=5.5v, output off ? < 0.1 1 a idd(en) supply current chip enable , t a = 25 c , vdd = 3v ? 3 6 ma idd(en) chip enable , t a = -40~85 c , vdd = 2.5~5.5v ? 3 10 ma idd(dis) chip disable , t a = 25 c , vdd = 3v ? 5 10 a idd(dis) chip disable , t a = -40~85 c , vdd = 2.5~5.5v ? 5 18 a idd(avg) average supply current , t a = 25 c , vdd = 3v ? 8 16 a idd(avg) average supply current , t a = -40~85 c , vdd = 2.5~5.5v ? 8 28 a f c chopping frequency for design information only ? 300 ? khz tawake awake time (note 5) ? 75 150 s tperiod period (note 5) ? 75 150 ms d.c. duty cycle ? 0.1 ? % notes: 5. when power is initially on, the operating vdd (2.5v to 5.5v) must be applied to be guaranteed for the output sampl ing. the output state is valid after the second operating phase (typical 150ms). idd (dis) idd(en) tawake tperiod 0 sample and output latched electrical characteristics (t a = +25 c, vdd = 3v; unless otherwise specified)
ah1822 micropower omnipolar hall-effect sensor switch ah1822 rev. 5 5 of 9 february 2009 www.diodes.com ? diodes incorporated magnetic characteristics (t a =25 c, vdd=3v, note 6, 7) (1mt=10 gauss) symbol characteristic min typ. max unit bops(south pole to brand side) operate point - 28 55 gauss bopn(north pole to brand side) -55 -28 - brps(south pole to brand side) release point 10 20 - brpn(north pole to brand side) - -20 -10 bhy( brpx bopx ? ) hysteresis 5 8 - notes: 6. typical data is at ta = 25 c, vdd = 3v, and for design information only. 7. operating point and release point will vary with supply voltage and operating temperature. b hy v sat v cc ( output voltage ) b opn b rpn 0 ( magnetic flux density b ) output turn on turn off ( off-state ) ( on-state ) b hy v sat v cc ( output voltage ) b rps b ops 0 ( magnetic flux density b ) output turn off turn on ( off-state ) ( on-state ) t a ( c) 25 50 60 70 80 85 90 100 110 120 130 140 150 p d (mw) 230 184 166 147 129 120 110 92 74 55 37 18 0 power dissipation curve 0 100 200 300 0 25 50 75 100 125 150 t a ( c) p d (m w ) 85 performance characteristics
ah1822 micropower omnipolar hall-effect sensor switch ah1822 rev. 5 6 of 9 february 2009 www.diodes.com ? diodes incorporated marking information (1) dfn2015-6 ( top view ) xx pin 1 indicator y : year : 0~9 x : a~z : green xx : identification code w : week : a~z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week y w x part number package identification code ah1822 dfn2015-6 k7 (2) dfn3020-6 ( top view ) x y x x w pin 1 indicator y : year : 0~9 x : a~z : green xx : identification code w : week : a~z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week part number package identification code ah1822 dfn3020-6 k8
ah1822 micropower omnipolar hall-effect sensor switch ah1822 rev. 5 7 of 9 february 2009 www.diodes.com ? diodes incorporated package information (all dimensions in mm) (1) package type: dfn2015-6 bottom view 0.40max. 0/0.05 0.13typ. 6x- 0.08 c ccc c c seating plane aaa b 2x- 1.0/1.2 0.7/0.9 (pin #1) bbb c ab aaa a 2x- a 1.45/1.575 1.95/2.075 b 4x-0.50 (pin #1) 0.25/0.35 0.20/0.30 2.0 6x-0.75 4x-0.50 6x-0..30 (pin #1) land pattern recommendation (unit:mm) (2) package type: dfn3020-6 bottom view 0.50typ. 0.20/0.30 0.40typ. 0/0.05 0.15typ. (pin #1 id) ccc c 0.08 c seating plane c bbb c ab aaa a 2x- aaa b 2x- 0.942/1.142 1.124/1.324 6x- 1.95/2.075 2.95/3.075 a b 0.50/0.60 3.0 (pin #1) 4x-0.50 6x-0.30 (pin #1) land pattern recommendation (unit: mm) 4x-0.75
ah1822 micropower omnipolar hall-effect sensor switch ah1822 rev. 5 8 of 9 february 2009 www.diodes.com ? diodes incorporated (1) dfn2015-6 (2) dfn3020-6 notes: 8. the taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ ap02007.pdf . taping orientation
ah1822 micropower omnipolar hall-effect sensor switch ah1822 rev. 5 9 of 9 february 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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