unisonic technologies co., ltd LM321 preliminary linear integrated circuit www.unisonic.com.tw 1 of 7 copyright ? 2014 unisonic technologies co., ltd qw-r104-007.b lo w power single op a mp ? description the utc LM321 ?s quiescent current is only 430a (5v). the utc LM321 brings performance and economy to low power systems, with a high unity gain frequency and a specified 0.4v/s slew rate. the input common mode range includes ground and therefore the device is able to operate in single supply applications as well as in dual supply applications. it is also capable of comfortably driv ing large capacitive loads. ? features * low supply current 430a * v cc =5v, t a =25c. typical values unless specified. * gain-bandwidth product 1mhz * low input bias current 45na * wide supply voltage range +3v~+32v * stable with high capacitive loads ? ordering information ordering number package packing LM321g- ae5-r sot-23-5 tape reel ? marking
LM321 preliminary linear integrated circuit unisonic technologies co., ltd 2 of 7 www.unisonic.com.tw qw-r104-007.b ? pin configuration ? pin description pin no. pin name description 1 +in non-inverting input 2 v - ground 3 -in inverting input 4 output output 5 v + power supply ? block diagram +in v - -in v + output + - 4 5 1 2 3
LM321 preliminary linear integrated circuit unisonic technologies co., ltd 3 of 7 www.unisonic.com.tw qw-r104-007.b ? absolute maximum rating parameter symbol ratings unit supply voltage (v + - v ? ) v cc 32 v differential input voltage v i ( diff ) supply voltage v input voltage v in -0.3~+32 v input current (v in < ? 0.3v) (note 2) 50 ma output short circuit to gnd, v + 15v and t a =25c (note 3) continuous junction temperature t j 150 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 only and functional device oper ation is not implied. 2. this input current will only exist when the voltage at any of the input leads is driven negative. it is due to the collector base junction of the input pnp transis tors becoming forward biased and thereby acting as input diode clamps. in addition to this diode action, t here is also lateral npn parasitic transistor action on the ic chip. this transistor action can cause the output voltages of the op amps to go to the v + voltage level (or to ground for a large overdrive) for the time duration that an input is dr iven negative. this is not destructive and normal output states will re-estab lish when the input voltage, which was negative, again returns to a value greater than -0.36v (at 25c). 3. short circuits from the output v + can cause excessive heating and eventual destruction. when considering short circuits to ground the maximu m output current is approximately 40ma independent of the magnitude of v + . at values of supply voltage in excess of +15v , continuous short circuits can exceed the power dissipation ratings and cause eventual destruction. ? operating ratings parameter symbol ratings unit temperature range t a -40~85 c supply voltage v + 3~30 v ? thermal data parameter symbol ratings unit junction to ambient ja 265 /w
LM321 preliminary linear integrated circuit unisonic technologies co., ltd 4 of 7 www.unisonic.com.tw qw-r104-007.b ? electrical characteristics (unless otherwise specified, all limits guaranteed for t a =25 ? c, v + =5v, v ? =0v, v o =1.4v.) parameter symbol test conditions min (note 1) typ (note 2) max (note 1) unit input offset voltage v os (note 3) 2 7 mv input bias current (note 4) i b 45 250 na input offset current i os 5 50 na input common-mode voltage range v cm v + =30v (note 5) for cmrr>=50db 0 v + -1.5 v large signal voltage gain a v (v + =15v, r l =2k ? v o =1.4v~11.4v) 25 100 v/mv 15 v/mv power supply rejection ratio psrr r s 10k ? , v + 5v~30v 65 100 db common mode rejection ratio cmrr r s 10k ? 65 85 db output swing v ol v + =5v, r l =10k ? 5 20 mv supply current, no load i s v + =5v 0.430 1.15 ma v + =30v 0.660 2.85 ma output current sourcing i source v id =+1v, v + =15v, v o =2v 20 40 ma output current sinking i sink v id =-1v, v + =15v, v o =2v 10 20 ma v id =-1v, v + =15v, v o =0.2v 12 100 a output short circuit to ground (note 6) i o v + =15v 40 85 ma slew rate sr v + =15v, r l =2k ? , v in =0.5~3v, c l =100pf, unity gain 0.4 v/s gain bandwidth product gbw v + =30v, f=100khz, v in =10mv, r l =2k ? , c l =100pf 1 mhz phase margin m 60 deg total harmonic distortion thd f=1khz, a v =20db, r l =2k ? , v o =2v pp , c l =100pf, v + =30v 0.015 % equivalent input noise voltage e n f=1khz, r s =100 ? , v + =30v 40 nv z h notes: 1. all limits are specified by testing or statistical analysis. 2. typical values represent t he most likely parametric norm. 3. v o ? 1.4v, r s =0 ? with v + from 5v to 30v; and over the full input common-mode range (0v~v + -1.5v) at 25c. 4. the direction of the input current is out of the ic due to the pnp inpu t stage. this current is essentially constant, independent of the st ate of the output so no loading change exists on the input lines. 5. the input common-mode voltage of either input si gnal voltage should not be allowed to go negative by more than 0.3v (at 25c). the upper end of the common-mode voltage range is v + -1.5v at 25c, but either or both inputs can go to +32v without dam age, independent of the magnitude of v + . 6. short circuits from the output v + can cause excessive heating and ev entual destruction. when considering short circuits to ground the maximum output current is approximately 40ma inde pendent of the magnitude of v + . at values of supply voltage in excess of +15v , continuous short circuits can exceed the power dissipation ratings and cause eventual destruction.
LM321 preliminary linear integrated circuit unisonic technologies co., ltd 5 of 7 www.unisonic.com.tw qw-r104-007.b ? simplified schematic v + 4a 6a q4 q3 q2 q1 inputs- c c 100a q5 q6 q7 r sc output q13 q11 q12 q10 50a q8 q9 inputs+ v -
LM321 preliminary linear integrated circuit unisonic technologies co., ltd 6 of 7 www.unisonic.com.tw qw-r104-007.b ? typical application circuit non-inverting dc gain (0v input = 0v output) v o (volts) power amplifier r1 910k v + r2 100k r3 91k +v in + - v o r l v 0 =0 v dc for v in =0 v dc , a v =10 led driver 20ma 82 nsl 102
LM321 preliminary linear integrated circuit unisonic technologies co., ltd 7 of 7 www.unisonic.com.tw qw-r104-007.b ? typical application circuit(cont.) r3 2k 2v + - fixed current sources v + 2v + - r1 2k r2 + - r4 3k i 1 i 2 1ma i 2 = r1 r2 i 1 600ma lamp driver v + 0 30ma 100 ? 20 + - 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 life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written 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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