1/5 n programmable electrical charac- teristics n low supply current (250 m a/amplifier) n gain-bandwith product : 1mhz n large dc voltage gain : 120db n low noise voltage : 28nv/ ? hz n wide power supply range / 1.5v to 22v n classe ab output stage. no cross-over distortion n overload protection for inputs and outputs description the lm346 consists of four independent, high gain, internally compensated, low power program- mable amplifiers. two external resistors (r set ) al- low the user to program the gain-bandwith prod- uct, slew rate, supply current, input bias current, input offset current and input noise. for example the user can trade-off supply current for bandwith or optimize noise figure for a given source resis- tance. in a similar way other amplifier characteris- tics can be tailored to the application. except for the two programming pins at the end of the package the lm346 pin out is the same as the lm324 and lm348. programming equations : total supply current = 1ma (i set = 10 m a) gain bandwith product = 1mhz (i set = 10 m a) slew rate = 0.5v/ m s (i set = 10 ma) input bias current ? 30na (i set = 10 ma) i set = current into pin 8 and pin 9 (see schematic diagram) order code n = dual in line package (dip) d = small outline package (so) - also available in tape & reel (dt) pin connections (top view) part number temperature range package nd lm146 -55c, +125c LM246 -40c, +105c lm346 0c, +70c example : LM246n i set vcc + vcc - C 0.6 v C r set ----------------------------------------------------- = n dip16 (plastic package) d so16 (plastic micropackage) cc v + 1 2 3 4 5 6 7 9 10 11 12 13 14 non-inverting input 2 - + - + output 1 non-inverting input 1 inverting input 1 - cc v inverting input 2 output 2 8 15 16 output 4 inverting input 4 non-inverting input 4 n on-inverting input 3 inverting input 3 output 3 set set lm146 LM246 lm346 programmable quad bipolar operational amplifier april 2002
lm146-LM246-lm346 2/5 schematic diagram (1/4 lm146) absolute maximum ratings symbol parameter value unit v cc supply voltage 22 v v i l input voltage 1) 1. for supply voltage less than 15v, the absolute maximum input voltage is equal to the supply voltage. 15 v v id differential input voltage 30 v output short-circuit duration 2) 2. any of the amplifier outputs can be shorted to ground indefinitly; however more than one should not be simultaneously shorted as the maximum junction will be exceeded. infinite p tot power dissipation n/d suffix 500 mw t oper opearting free-air temperature range lm146 LM246 lm346 -55 to +125 40 to +105 0 to +70- c t stg storage temperature range -65 to +150 c
lm146-LM246-lm346 3/5 electrical characteristics v cc + = 15v, i set = 10 m a, t amb = +25c (unless otherwise specified) symbol parameter lm146 LM246 - lm346 unit min. typ. max. min. typ. max. v io input offset voltage (r s 10k w ) t amb = 25c t min t amb t max 0.5 3 5 0.5 5 6 mv i io input offset current t amb = 25c t min t amb t max 220 25 2 100 100 na i ib input bias current t amb = 25c t min t amb t max 30 100 100 30 250 250 na a vd large signal voltage gain (v o = 10v, r l = 10k w) t amb = 25c t min t amb t max 100 50 1000 50 25 1000 v/mv svr supply voltage rejection ratio (r s 10k w ) t amb = 25c t min t amb t max 80 80 110 80 80 110 db i cc supply current, all amp, no load t amb = 25c t min t amb t max 12 2 12 2 ma v icm input common mode voltage range t amb = 25c t min t amb t max 13.5 13.5 13.5 13.5 cmr common mode rejection ratio (r s 10k w ) t amb = 25c t min t amb t max 80 70 110 80 70 110 db i os output short-circuit current t amb = 25c t min t amb t max 10 4 20 30 35 10 4 20 30 35 ma v opp output voltage swing (r l 10k w ) t amb = 25c t min t amb t max 12 12 14 12 12 14 v sr slew rate (v i = 10v, r l = 10k w , c l = 100pf, unity gain) 0.3 0.5 0.3 0.5 v/ m s r i input resistance 1 1 m w c i input capacitance 2 2 pf v o1 /v o2 channel separation (r l = 10k w , vo = 12v pp ) 120 120 db gbp gain bandwith product (v i = 10 mv, r l = 10k w , c l = 100pf f =100khz) 0.8 1 0.5 1 mhz thd total harmonic distortion (f = 1khz, a v = 20db, r l = 10k w c l = 100pf, v o = 2v pp ) 0.015 0.015 % e n equivalent input noise voltage (f = 1khz, r s = 100 w 28 28 nv hz ----------- -
lm146-LM246-lm346 4/5 package mechanical data 16 pins - plastic package dim. millimeters inches min. typ. max. min. typ. max. a1 0.51 0.020 b 0.77 1.65 0.030 0.065 b 0.5 0.020 b1 0.25 0.010 d 20 0.787 e 8.5 0.335 e 2.54 0.100 e3 17.78 0.700 f 7.1 0.280 i 5.1 0.201 l 3.3 0.130 z 1.27 0.050
lm146-LM246-lm346 5/5 package mechanical data 16 pins - plastic micropackage dim. millimeters inches min. typ. max. min. typ. max. a 1.75 0.069 a1 0.1 0.2 0.004 0.008 a2 1.6 0.063 b 0.35 0.46 0.014 0.018 b1 0.19 0.25 0.007 0.010 c 0.5 0.020 c1 45 (typ.) d 9.8 10 0.386 0.394 e 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 8.89 0.350 f 3.8 4.0 0.150 0.157 g 4.6 5.3 0.181 0.209 l 0.5 1.27 0.020 0.050 m 0.62 0.024 s 8 (max.) information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result f rom its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specificati ons mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectronics. ? the st logo is a registered trademark of stmicroelectronics ? 2002 stmicroelectronics - printed in italy - all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - finland - france - germany - hong kong - india - israel - italy - japan - malaysia malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states ? http://www.st.com
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