july 1998 1 mic6251/6252 mic6251/6252 micrel mic6251/6252 ittybitty gainblock amplifiers final information general description the mic6251 and mic6252 are ittybitty gainblock amplifiers for use as follows: mic6251 ................................ +2, +1, ? gain amplifier mic6252 .................................. +0.5, +1 gain amplifier; average value amplifier the mic6251 and mic6252 amplifiers operate from 4v to 32v. both can use single or split supplies. these amplifiers feature internal, well-matched, gain-setting resistors and an input common-mode range that includes the negative supply (ground). the mic6251/2 is available in the tiny sot-23-5 surface mount package. features 4v to 32v operation small footprint package internally compensated 2mhz bandwidth 6v/ s typical slew rate short circuit protected applications analog building blocks summing amplifier gain block ordering information part number marking temperature range package mic6251bm5 a51 ?0 c to +85 c sot-23-5 mic6252bm5 a52 ?0 c to +85 c sot-23-5 functional configuration 321 20k 20k 20k 4 5 in+ v out in v+ 20k mic6251 321 20k 20k 20k 4 5 in+ v out in v+ 20k mic6252 pin configuration part identification out v+ in in+ axx 1 3 45 2 v sot-23-5 (m5) part number identification mic6251bm5 a51 mic6252bm5 a52 ittybitty and gainblock are a trademarks of micrel, inc. micrel, inc. 1849 fortune drive san jose, ca 95131 usa tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
mic6251/6252 micrel mic6251/6252 2 july 1998 electrical characteristics (differential supply) v v+ = +15v, v v = 15v; v cm = 0v, note 1 ; t a = 25 c, bold values indicate 40 c t a +85 c, t a = t j ; unless noted. symbol parameter condition min typ max units g e gain error mic6251: a v = 2, v o = 10v 0.3 0.5 % mic6252: a v = 0.5, v o = 10v 0.3 0.5 % g nl gain non-linearity mic6251: a v = 2, v o = 10v 0.01 % mic6252: a v = 0.5, v o = 10v 0.01 % v os offset voltage mic6251: referred to output 4 14 mv mic6252: referred to output 2 7 mv tcv os average offset drift 7 v/ c i b input bias current 50 250 na v cm input voltage range, differential note 3 25 v input volt. range, common mode 13.5 13.8 v cmrr common mode rejection ratio ? v cm = 27v, 13.5v to +13.5v 65 100 db psrr power supply rejection ratio ? v s = 25v, 15v to 2.5v 65 110 db v out maximum output voltage swing r l = 2k 12.5 14 v b w bandwidth 2 mhz s r slew rate 6v/ s i s supply current 1.3 2.0 ma general note : devices are esd protected; however, handling precautions are recommended. note 1: in+ and in pins on the mic6252 are interchangeable. note 2: gain setting resistors are ratio-matched but have a 20% absolute tolerance note 3: limit input current to 1ma. note 4: human body model, 1.5k in series with 100pf. absolute maximum ratings supply voltage (v v+ v v ) ............................. 36v or 18v differential input voltage (v in+ v in ) ....................... 36v input voltage (v in+ , v in ) ........................ v v 0.3v to v v+ output short circuit current duration ............................... junction temperature (t j ) ........................................ 150 c storage temperature (t s ) ....................... 65 c to +150 c lead temperature (soldering, 10 sec.) ..................... 260 c esd, note 4 ............................................................... [tbd] operating ratings supply voltage .................................................... 4v to 32v ambient temperature range ..................... 40 c to +85 c sot-23-5 thermal resistance ( ja ) ..................... 325 c/w pin description pin number pin name pin function 1 out amplifier output 2v negative supply: negative supply for split supply application or ground for single supply application. 3 in+ noninverting input: see electrical characteristics: note 1 . 4in inverting input: see electrical characteristics: note 1 . 5 v+ positive supply
july 1998 3 mic6251/6252 mic6251/6252 micrel typical characteristics 1.0 1.1 1.2 1.3 1.4 -40 -20 0 20 40 60 80 100 supply current (ma) temperature ( c) supply current vs. temperature v s = 15v 0 0.5 1.0 1.5 0 5 10 15 20 25 30 supply current (ma) supply voltage (v) supply current vs. supply voltage t a = 25 c 20 30 40 50 60 70 -40 -20 0 20 40 60 80 100 input bias current (na) temperature ( c) input bias current vs. temperature v s = 15v -25 -20 -15 -10 -5 0 5 10 0.01 0.1 1 10 100 gain (db) frequency (mhz) mic6251 gain vs. frequency g = +2 v s = 15v t a = 25 c g = +1 0 5 10 15 20 25 30 10 100 1000 3000 peak-to-peak output voltage (v) frequency (khz) undistorted output swing vs. frequency v s = 15v r l = 2k g = +2 t a = 25 c 50 60 70 80 90 100 110 0.01 0.1 1 10 100 1000 cmrr (db) frequency (khz) common-mode rejection ratio vs. frequency v s = 15v g = +2 t a = 25 c 50 60 70 80 90 100 110 120 130 0.001 0.01 0.1 1 10 100 psrr (db) frequency (khz) power supply rejection ratio vs. frequency v s = 15v t a = 25 c +psrr -psrr 40 45 50 55 60 65 -40 -20 0 20 40 60 80 100 short circuit current (ma) temperature ( c) short circuit current vs. temperature v s = 15v
mic6251/6252 micrel mic6251/6252 4 july 1998 +10v mic6251 large-signal transient response 10v gnd v s = 15v r l = 2k c l = 10pf g = +2 2 s/div +10v mic6251 large-signal transient response 10v gnd v s = 15v r l = 2k c l = 10pf g = +1 2 s/div +10v mic6251 large-signal transient response 10v gnd v s = 15v r l = 2k c l = 10pf g = 1 2 s/div +5v mic6252 large-signal transient response 5v gnd v s = 15v r l = 2k c l = 10pf g = 0.5 2 s/div +100mv mic6251 small-signal transient response 100mv gnd v s = 15v r l = 2k c l = 100pf g = +2 500ns/div
july 1998 5 mic6251/6252 mic6251/6252 micrel noise voltage (4 v/div) mic6251/2 0.1hz to 10hz noise gain = +1 v s = 15v 1s/div noise voltage (5 v/div) mic6251/2 wideband noise gain +1 v s = 15v 5ms/div
mic6251/6252 micrel mic6251/6252 6 july 1998 functional configurations figures 1 through 6 illustrate basic mic6251 and mic6252 gainblock configurations. 20k 20k 20k in+ in 20k v+ out v out = 2v in +4v to +32v v in 3 4 1 5 v 2 mic6251 figure 1. mic6251 a v = 2 amplifier 20k 20k 20k in+ in 20k v+ out v out = v in +4v to +32v v in 3 4 1 5 v 2 mic6251 figure 2. mic6251 voltage follower 20k 20k 20k in+ gnd in 20k v+ out v out = v in +2v to +16v v in 3 4 3 1 5 v 2 2v to 16v mic6251 figure 3. mic6251 inverting unity-gain circuit
july 1998 7 mic6251/6252 mic6251/6252 micrel 20k 20k in+ in 20k v+ out +4v to +32v v in 3 4 1 5 v 2 mic6252 20k v v 2 out in = figure 4. mic6252 a v = 0.5 amplifier 20k 20k in+ in 20k v+ out +4v to +32v v in 3 4 1 5 v 2 mic6252 20k v out = v in figure 5. mic6252 voltage follower 20k 20k in+ in 20k v+ out +4v to +32v v in1 3 4 1 5 v 2 mic6252 20k v vv out in1 in2 = + 2 v in2 figure 6. mic6252 voltage averager
mic6251/6252 micrel mic6251/6252 8 july 1998 package information 0.20 (0.008) 0.09 (0.004) 0.60 (0.024) 0.10 (0.004) 3.02 (0.119) 2.80 (0.110) 10 0 3.00 (0.118) 2.60 (0.102) 1.75 (0.069) 1.50 (0.059) 0.95 (0.037) ref 1.30 (0.051) 0.90 (0.035) 0.15 (0.006) 0.00 (0.000) dimensions: mm (inch) 0.50 (0.020) 0.35 (0.014) 1.90 (0.075) ref sot-23-5 (m5) micrel inc. 1849 fortune drive san jose, ca 95131 usa tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 web http://www.micrel.com this information is believed to be accurate and reliable, however no responsibility is assumed by micrel for its use nor for an y infringement of patents or other rights of third parties resulting from its use. no license is granted by implication or otherwise under any patent or pat ent right of micrel inc. ? 1998 micrel incorporated
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