may 2011 ? 2010 fairchild semiconductor corporation www.fairchildsemi.com fan256 ? rev. 1.0.0 fan256 ? dual low voltage comparator fan256 ? dual low voltage comparator features ? low supply current: i dd =7 a (typical) ? single power supply operation ? wide common-mode input voltage range: rail-to-rail ? push-pull output circuit ? low input bias current ? internal hysteresis ? packaged in micropak? 8 (1.6mm x 1.6mm) applications ? mobile phones ? alarm and security systems ? personal digital assistants description the fan256 is a low-power, dual comparator that typically consumes less than 10a supply current per comparator. guaranteed to o perate at a low voltage of 1.6v and fully operational up to 5.5v, it is convenient for use in 1.8, 3.0v, and 5.0v systems. the fan256 has a complementary push-pull p- and n- channel output stage capabile of driving a rail-to-rail output swing with a load ranging up to 5.0ma. figure 1. functional diagram ordering information part number top mark operating temperature range package packing method FAN256L8X cp -40 to 85c 8-lead, micropak? 1.6mm x 1.6mm package 5000 units on tape and reel 2 3 6 5 7 1 in(-) a in(+) a in(-) b in(+) b out b out a - + + - + v dd v ss
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fan256 ? rev. 1.0.0 2 fan256 ? dual low voltage comparator pin configuration figure 2. pin configuration (top through view) pin definitions pin # name description 1 out a comparator a output 2 in(-) a inverting input of comparator a 3 in(+) a non-inverting input of comparator a 4 vss negative supply voltage 5 in(+) b non-inverting input of comparator b 6 in(-) b inverting input of comparator b 7 out b comparator b output 8 vdd positive supply voltage function table inputs outputs in(-) > in(+) output low in(+) > in(-) output high v in (+) v dd v out v out v in(-) v in (-) v dd v out v out v in(+) figure 3. v in vs. v out vdd 7 6 5 2 8 1 out a in(-) a in(+) a out b vss in(-) b in(+) b 4 3
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fan256 ? rev. 1.0.0 3 fan256 ? dual low voltage comparator absolute maximum ratings stresses exceeding the absolute maximum ratings may dam age the device. the device may not function or be operable above the recommended operating conditions and st ressing the parts to these levels is not recommended. in addition, extended exposure to stresses above the recomm ended operating conditions may affect device reliability. the absolute maximum ratings are stress ratings only. symbol parameter condition min. max. unit v dd to v ss supply voltage -3.0 +3.0 v 0 6.0 dv in differential input voltage 6 v in input voltage v ss to v dd v t s output short circuit duration (1) indefinite s t j junction temperature +150 c t stg storage temperature range -65 +150 c p d power dissipation 226 mw ? ja thermal resistance 287 c/w esd iec 61000-4-2 system esd air gap 15 kv contact 8 jedec jesd22-a114, human body model all pins 8 pin to pin: in(-), in(+) to v dd or v ss 12 jedec jesd22-c101, charged device model all pins 2 note: 1. the maximum total power dissipation must not be exceeded. recommended operating conditions the recommended operating conditions table defines th e conditions for actual device operation. recommended operating conditions are specified to en sure optimal performance to the datash eet specifications. fairchild does not recommend exceeding them or designing to absolute maximum ratings. symbol parameter condition min. max. unit v dd to v ss power supply -2.75 +2.75 v 0 5.5 v dd power supply v ss =0v 1.6 5.5 v v in input voltage v ss to v dd v i oh /i ol output sink/source current v dd =5.0v 5 ma v dd =3.0v 3 v dd =1.6v 1 t a operating temperature, free air -40 +85 c
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fan256 ? rev. 1.0.0 4 fan256 ? dual low voltage comparator electrical characteristics symbol parameter condition min. typ. max. unit v dd =5.5v, v ss =gnd, and t a =+25c v hys input hysteresis v cm =0.5v dd 4 mv v io input offset voltage (2) v cm =0.5v dd -15 1 +15 mv i io input offset current 10 pa i i input bias current 10 pa v cm common mode input voltage v ss v dd v cmrr common mode rejection ratio (3) v cm =v dd 68 db i dd supply current - per comparator 7 17 a psrr power supply rejection ratio (3) v dd =0.5v 45 80 db i os output short circuit current v o =v dd 60 ma v o =v ss 90 v ol low-level output voltage i sink =5.0ma 0.1 0.3 v v oh high-level output voltage i source =5.0ma 5.2 5.4 v t plh propagation delay (turn-on) overdrive=20mv, c l =15pf 0.40 s t phl propagation delay (turn-off) overdrive=20mv, c l =15pf 0.42 s t tlh response time, output rise/fall (4) c l =50pf 4.0 ns t thl 5.4 v dd =3v, v ss =gnd, and t a =+25c v hys input hysteresis v cm =0.5v dd 4 mv v io input offset voltage (2) v cm =0.5v dd -15 1 +15 mv i io input offset current 10 pa i i input bias current 10 pa v cm common mode input voltage v ss v dd v cmrr common mode rejection ratio (3) v cm =v dd 60 db i dd supply current(x) per comparator 6 15 a psrr power supply rejection ratio (3) v dd =0.5v 45 70 db i os output short circuit current v o =v dd 27 ma v o =v ss 35 v ol low-level output voltage i sink =3.0ma 0.15 0.35 v v oh high-level output voltage i source =3.0ma 2.65 2.85 v t plh propagation delay (turn-on) overdrive=20mv, c l =15pf 0.45 s t phl propagation delay (turn-off) overdrive=20mv, c l =15pf 0.47 s t tlh response time, output rise/fall (4) c l =50pf 6.1 ns t thl 6.2 continued on the following page?
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fan256 ? rev. 1.0.0 5 fan256 ? dual low voltage comparator electrical characteristics symbol parameter condition min. typ. max. unit v dd =1.6v, v ss =gnd, and t a =+25c v hys input hysteresis v cm =0.5v dd 3.5 mv v io input offset voltage (2) v cm =0.5v dd -15 1 +15 mv i io input offset current 10 pa i i input bias current 10 pa v cm common mode input voltage v ss v dd v cmrr common mode rejection ratio (3) v cm =v dd 56 db i dd supply current(x) per comparator 5 13 a psrr power supply rejection ratio (3) v dd =0.5v 45 70 db i os output short circuit current v o =v dd 5.5 ma v o =v ss 7.5 v ol low-level output voltage i sink =1.0ma 0.15 0.25 v v oh high-level output voltage i source =1.0ma 1.35 1.50 v t plh propagation delay (turn-on) overdrive=20mv, c l =15pf 0.52 s t phl propagation delay (turn-off) overdrive=20mv, c l =15pf 0.54 s t tlh response time, output rise/fall (4) c l =50pf 16.5 ns t thl 13.0 notes: 2. differential input switching level is guaranteed at the minimum or maximum offset voltage, minus or plus half the maximum hysteresis voltage. 3. guaranteed by design and characterization data 4. input signal: 1khz, square-wave signal with 10ns edge rate.
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fan256 ? rev. 1.0.0 6 fan256 ? dual low voltage comparator typical performance characteristics figure 4. supply current vs. temperature fi gure 5. supply current vs. output transition frequency figure 6. supply current vs. supply voltage figur e 7. output high vs. output drive current figure 8. output low vs. output drive current figure 9. propagation delay (t phl ) vs. temperature 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 16.00 -55 ? c-40 ? c -25 ? c25 ? c85 ? c 95 ? c i dd , supply current (a) t a , ambient temperature vdd=1.6v vdd=3.0v vdd=5.5v includes ? both ? comparators 0 100 200 300 400 500 600 700 800 900 0.01 0.1 1 10 100 100 0 i cc (a) frequency (khz) 1.6 vdd 3.0 vdd 5.5 vdd temp. ? = 25c c l = ? 15pf 0 2 4 6 8 10 12 14 16 00.511.522.533.544.555.56 i dd , ? supply ? current ? (a) v dd , ? supply ? voltage ? (v) \ 40 ?? c 25 ?? c 85 ?? c * ? data ? includes ? both ? comparators 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 0246810 v oh , ? output ? voltage ?? high ? state ? (v) i source , ? output ? source ? current ? (ma) vdd=1.6v vdd=3.0v vdd=5.5v 1 10 100 1000 0.10 1.00 10.00 v ol , output voltage low (mv) i sink , output sink current (ma) vdd=1.6v vdd=3.0v vdd=5.5v 200 220 240 260 280 300 320 340 360 380 400 -60 -40 -20 0 20 40 60 80 100 t phl (ns) temperature 1.6vdd 3.0vdd 5.5vdd
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fan256 ? rev. 1.0.0 7 fan256 ? dual low voltage comparator typical performance characteristics (continued) figure 10. propagation delay (t plh ) vs. temperature figure 11. propagation delay vs. input overdrive figure 12. input common mode voltage range vs. supply voltage figure 13. powe r -up delay 200 250 300 350 400 450 500 -60 -40 -20 0 20 40 60 80 100 t plh (ns) temperature 1.6vdd 3.0vdd 5.5vdd 100 120 140 160 180 200 220 240 260 280 300 0 50 100 150 200 250 delay (ns) overdrive (mv) tplh tphl v dd =3.0v ? temp. ? =25c \ 3 \ 2 \ 1 0 1 2 3 123456 input ? common ? mode ? voltage ? range ? (v) vs, ? supply ? voltage ? (v) t a = ? 25c 0 1 2 3 4 5 6 7 0 50 100 150 200 250 300 voltage (v) time (s) vdd output in p ut overdrive = 50mv
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fan256 ? rev. 1.0.0 8 fan256 ? dual low voltage comparator physical dimensions figure 14. 8-lead, micropak? 1.6mm wide package drawings are provided as a service to customers consi dering fairchild components. drawings may change in any manner without notice. please note the revision and/or date on the drawi ng and contact a fairchild semiconductor representative to ver ify or obtain the most recent revision. package specifications do not expand the terms of fairchild?s worldwide terms and conditions, specifically the warranty therein, which covers fairchild products. always visit fairchild semiconductor?s online packagi ng area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ . tape and reel specifications please visit fairchild semiconductor?s online packaging area for the most re cent tape and reel specifications: h http://www.fairchildsemi.com/products/logic/pdf/micropak_tr.pdf / (0.09) (0.1) (0.2) 1.6 2x 0.05 0.00 1.6 2x c 0.05 c 4 3. drawing conforms to asme y.14m-1994 2. dimensions are in millimeters 1. package conforms to jedec mo-255 variation uaad bottom view 4. pin 1 flag, end of package offset mac08arev4 1 23 5 6 7 8 notes: 8x 0.25 0.35 3x 8x 1.0 4 0.5 8x 0.25 0.15 0.10 cab 0.05 c 0.10 c top view index area b recommended landpattern a 0.10 c 0.55 max 0.05 c detail a 0.35 0.25 (0.15) (0.20) 0.35 0.25 detail a pin #1 terminal scale: 2x 5. drawing file name: mkt-mac08arev4
? 2010 fairchild semiconductor corporation www.fairchildsemi.com fan256 ? rev. 1.0.0 9 fan256 ? dual low voltage comparator
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