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unisonic technologies co., ltd lv321 linear integrated circuit www.unisonic.com.tw 1of 11 copyright ? 2011 unisonic technologies co., ltd qw-r105-036.b single general purpose, low voltage, rail-to-rail output operational amplifier ? description the utc lv321 is a single op amp with low supply current and low voltage (2.7-5.5v) well economic consideration. it brings nice performance and to low voltage, low power systems. with a 1mhz unity-gain frequency, the utc lv321 has a guaranteed 1 v/s slew rate and low supply current. it provides heavy rail-to-rail (r-to-r) output swing loads and the input common-mode voltage range including ground. besides, it is al so capable for comfortably driving large capacitive loads. the utc lv321 has bipolar input and cmos output for improved noise performance and higher output current drive. it?s the most cost effective so lution for the applications where low voltage operation, space saving and low price are required. ? features * 2.7v and 5v performance guaranteed * no crossover distortion * 130a low supply current * rail-to-rail output swing @10k ? load: v + -10mv v - +65mv * v cm from -0.2v to v + -0.8v ? ordering information ordering number package packing lead free halogen free LV321G-AF5-R LV321G-AF5-R sot-25 tape reel lv321g-al5-r lv321g-al5-r sot-353 tape reel
lv321 linear integrated circuit unisonic technologies co., ltd 2 of 11 www.unisonic.com.tw qw-r105-036.b ? marking ? pin configuration +in -in v - v + output 5 4 1 2 3
lv321 linear integrated circuit unisonic technologies co., ltd 3 of 11 www.unisonic.com.tw qw-r105-036.b ? absolute maximum ratings parameter symbol ratings unit supply voltage v ss 2.7 ~ 5.5 v supply voltage (v + - v - ) v ss 5.5 v differential input voltage v i ( diff ) supply voltage output short circuit v + i o(sc) (note 2) v - (note 3) infrared (15 sec) 215 c junction temperature t j +150 c operation temperature t opr -40~+85 c storage temperature t stg -65~+150 c notes: 1. absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings onl y and functional device oper ation is not implied. 2. shorting output to v+ will adversely affect reliability 3. shorting output to v- will adversely affect reliability ? thermal data parameter symbol rating unit junction to ambient sot-25 ja 265 c/w sot-353 478 c/w ? 2.7v electrical characteristics all limits guaranteed for t j =25c, v + =2.7v, v - =0v, v cm =1.0v, v out =v + /2 and r l > 1m ? , unless otherwise specified. parameter symbol conditions min typ max unit dc characteristics input offset voltage v os 1.7 7 mv input common mode voltage range v cm for cmrr 50db 0 -0.2 v 1.9 1.7 v output swing v out r l =10k ? to 1.35v v + - 100 v + - 10 mv 60 180 mv input offset voltage average drift tcvos 5 v/ c input bias current i i ( bias ) 11 250 na input offset current i i ( off ) 5 50 na common mode rejection ratio cmrr 0v v cm 1.7v 50 63 db power supply rejection ratio psrr 2.7v v + 5v, v out =1v 50 60 db supply current i ss 80 170 a ac characteristics gain bandwidth product gbwp c l =200pf 1 mhz phase margin m 60 deg gain margin g m 10 db input referred voltage noise en f=1khz 46 nv hz input referred current noise i n f=1khz 0.17 pa hz
lv321 linear integrated circuit unisonic technologies co., ltd 4 of 11 www.unisonic.com.tw qw-r105-036.b ? 5v electrical characteristics all limits guaranteed for t j =25 c, v + =5v, v - =0v, v cm =2.0v, v out =v + /2 and r l > 1m ? , unless otherwise specified. parameter symbol conditions min typ max unit dc characteristics input offset voltage v os 1.7 7 mv input common-mode voltage range v cm for cmrr 50db 0 -0.2 v 4.2 4 v output swing v out r l =2k ? to2.5v v oh v + -300 v + -40 mv v ol 120 300 mv r l =10k ? to 2.5v v oh v + -100 v + -10 mv v ol 65 180 mv input offset voltage average drift tcvos 5 v/ c input bias current i i ( bias ) 15 250 na input offset current i i ( off ) 5 50 na common mode rejection ratio cmrr 0v v cm 4v 50 65 db power supply rejection ratio psrr 2.7v v + 5v v out =1v, v cm =1v 50 60 db large signal voltage gain(note 1) g v r l =2k ? 15 100 v/mv output short circuit current i out sourcing, v out =0v 5 60 ma sinking, v out =5v 10 160 ma supply current i ss 130 250 a ac characteristics slew rate sr (note 2) 1 v/s gain bandwidth product gbwp c l =200pf 1 mhz phase margin m 60 deg gain margin g m 10 db input referred voltage noise en f=1khz 39 nv hz input referred current noise i n f=1khz 0.21 pa hz notes: 1. r l is connected to v - . the output voltage is 0.5v v out 4.5v. 2. connected as voltage follower with 3v step input. number specified is these lower of the positive and negative slew rates 3. all numbers are typical, and apply for package s soldered directly note a pc board is still air.
lv321 linear integrated circuit unisonic technologies co., ltd 5 of 11 www.unisonic.com.tw qw-r105-036.b ? typical characteristics suply current, i ss (a) output impedance from supply voltage (v) sourcing current, i sourct (ma) sourcing current , i sourct (ma) sinking current, i sink (ma) sourcing current, i sourcing (ma)
lv321 linear integrated circuit unisonic technologies co., ltd 6 of 11 www.unisonic.com.tw qw-r105-036.b ? typical characteristics (cont.) -3 2 1.4 1.6 -1.5 -0.5 0.5 1.5 2.6 v os vs cmr input common mode voltage range, v cm (v) 0.8 3 2.2 2.0 2.8 0.6 2.4 1.8 0 1 -1 -1 0 1 3 -2 5 0 2.5 4.5 3.5 1.5 3 2 0.5 v ss = 2.5v t a =25c v os vs cmr gain and phase vs. capacitive load frequency(hz) -20 -10 0 10 20 30 40 50 10k 100k 1m 10m -40 -20 0 20 40 60 80 100 gain phase vs=+5v, r l =+ , single supply, t a =25 , c l =0 frequency(hz) -20 -10 0 10 20 30 40 50 10k 100k 1m 10m -40 -20 0 20 40 60 80 100 gain phase vs=+5v, r l =+ , single supply, t a =25 , c l =100pf gain and phase vs. capacitive load gain and phase vs. capacitive load frequency(hz) -20 -10 0 10 20 30 40 50 10k 100k 1m 10m -40 -20 0 20 40 60 80 100 gain phase vs=+5v, r l =+ , single supply, t a =25 , c l =500pf -20 -10 0 10 20 30 40 50 10k 100k 1m 10m -40 -20 0 20 40 60 80 100 gain phase vs=+5v, r l =+ , single supply, t a =25 , c l =1000pf gain and phase vs. capacitive load input common mode voltage range, v cm (v) 1.2 1.0 v ss = 1.35v t a =25c 1 4 frequency(hz)
lv321 linear integrated circuit unisonic technologies co., ltd 7 of 11 www.unisonic.com.tw qw-r105-036.b ? typical characteristics (cont.) short circuit current vs temperature (sinking) 120 40 0 -40 0 40 80 80 short circuit current vs temperature (sourcing) temperature ( ) 100 60 20 -20 60 20 v ss = 2.7v short circuit current (a) v ss = 5v 1.5 0.5 2.5 5.0 slew rate vs supply voltage supply voltage (v) 1.4 1.2 0.8 0.7 sles rate (v/s) 1.1 0.9 0.6 3.0 4.0 1.3 1.0 vs=+5v, r l =10k ? , a v =+1, v in =1vpp, single supply, t a =25 rising edge failing edge 3.5 4.5 140 120 40 0 -40 0 40 80 80 temperature ( ) 100 60 20 -20 60 20 v ss = 2.7v short circuit current (a) v ss = 5v 140
lv321 linear integrated circuit unisonic technologies co., ltd 8 of 11 www.unisonic.com.tw qw-r105-036.b ? typical characteristics (cont.) non-inverting large signal pulse response time (1s/div) output signal input signal (1v/div) non-inverting large signal pulse response time (1s/div) t a = 25 t a = 85 output signal input signal (1v/div) non-inverting large signal pulse response time (1s/div) output signal input signal (1v/div) non-inverting small signal pulse response time (1s/div) output signal input signal (50mv/div) t a = -40 t a = 25 non-inverting small signal pulse response output signal input signal (50mv/div) non-inverting small signal pulse response output signal input signal (50mv/div) t a = 85 t a = -40 time (1s/div) time (1s/div) t a = 25 t a = -40 t a = 85
lv321 linear integrated circuit unisonic technologies co., ltd 9 of 11 www.unisonic.com.tw qw-r105-036.b ? typical characteristics (cont.) output signal input signal (50mv/div) output signal input signal (1v/div) output signal input signal (50mv/div) output signal input signal (1v/div) output signal input signal (1v/div) output signal input signal (50mv/div)
lv321 linear integrated circuit unisonic technologies co., ltd 10 of 11 www.unisonic.com.tw qw-r105-036.b
lv321 linear integrated circuit unisonic technologies co., ltd 11 of 11 www.unisonic.com.tw qw-r105-036.b utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in lif e support appliances, devices or systems where malfunction of these products can be reasonably expe cted to result in personal injury. reproduction in whole or in part is prohibited without the prior writ ten consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.

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