NJM2342 -1- ver.2007-01-05 quad buffer for reference circuit ic general description package outline features quad buffer internal tvsp10 sink/source output offset voltage vio=1mv typ. operating voltage 3v to 14v quiescent current 1ma typ. bipolar technology package outline tvsp10 pin configuration the NJM2342 is a 4 channel buffer ic packaged in the small tvsp 10. the NJM2342 provides buffered voltage from the external input voltage. the sink-source output configuration effectively absorbs transient response of load changes. therefore, it is suitable for reference voltage generation for video dac, lcd bias voltage and other applications where transient response become s an issue. NJM2342rb2 a b c d 1 2 3 4 5 6 7 8 10 9 pin function 1. a output 2. a +input 3. v + 4. b +input 5. b output 6. c output 7. c +input 8. gnd 9. d +input 10. d output NJM2342rb2
NJM2342 - 2 - ver.2007-01-05 absolute maximum ratings (ta=25c) parameter symbol maximum ratings unit supply voltage v + 15 v common mode input voltage v ic -0.3 +14 (note1) v power dissipation p d 320 mw operating temperature range t opr -40 +85 c storage temperature range t stg -50 +125 c (note1) when the supply voltage is less than 14v, the absolute maximum input voltage is equal to the supply voltage. electrical characteristics (v + =5v,ta=25c) parameter symbol test condition min. typ. max. unit operating voltage v + (note2) 3 ? 14 v output offset voltage v os ? 1 5 mv input bias current i b ? 20 150 na load regulation 1 ? v1 v in + =2.5v, i source =0 to 30ma ? 0.2 15 mv load regulation 2 ? v2 v in + =2.5v, i sink =0 to 15ma ? 0.5 15 mv input common mode voltage range v icm i source =, i sink =12ma 1 3.2 ? ? v common mode rejection ratio cmr v in + =1 to 3.2v ? 85 ? db supply voltage rejection ratio svr v + =3v to 14v ? 100 ? db operating current i cc rl= ? 1.0 2.0 ma slew rate sr rl=2k ? , f=1khz ? 0.7 ? v/us (note2) input common mode voltage range case to when operating low voltage. test circuits v + i source +input output i sink v v out v + v out i cc v a 1/2v + +input output v os v
NJM2342 - 3 - ver.2007-01-05 typical applications v in v out1 ic r1 NJM2342 r s v out2 v out3 v out4 v out5 r2 r r r r r ic is shunt regulator. v ref =2.5v njm431 njm2380/a njm2390/a v ref =1.25v njm2373/a njm2376 njm2820/21/22 typical characteristics 0 0.5 1 1.5 2 051015 operating current i cc (ma) operating current vs. operating voltage (v in + =1/2v + , ta=25 o c) operating voltage v + (v) -6 -4 -2 0 2 4 6 4 6 8 10 12 14 ach bch cch dch output offset voltage v os (mv) output offset voltage vs. operating voltage (v in + =1/2v + , ta=25 o c) operating voltage v + (v)
NJM2342 - 4 - ver.2007-01-05 typical characteristics 10 12 14 16 18 20 4 6 8 10 12 14 ach bch cch dch input bias current vs. operating voltage (v in + =1/2v + , ta=25 o c) input bias current i b (na) operating voltage v + (v) -3 -2.5 -2 -1.5 -1 -0.5 0 0 5 10 15 20 25 30 35 40 ach bch cch dch load regulation 1 vs. source current (v + =5v, v in + =2.5v, ta=25 o c) source current i source (ma) load regulation 1 ? v1 (mv) 0 0.5 1 1.5 2 2.5 3 0 5 10 15 20 25 30 ach bch cch dch load regulation 2 vs. sink current (v + =5v, v in + =2.5v, ta=25 o c) sink current i sink (ma) load regulation 2 ? v2 (mv) 2 2.5 3 3.5 4 0 5 10 15 20 25 30 35 40 v in + =3.5v v in + =3.0v v in + =2.5v output voltage vs. source current (v + =5v, ta=25 o c) source current i source (ma) output voltage v o (v) 0 0.5 1 1.5 2 0 5 10 15 20 v in + =1.0v output voltage vs. sink current (v + =5v, ta=25 o c) sink current i sink (ma) output voltage v o (v) v in + =0.8v v in + =0.7v
NJM2342 - 5 - ver.2007-01-05 typical characteristics 0 0.5 1 1.5 2 2.5 3 -50 -25 0 25 50 75 100 125 temperature ta ( o c) operating current i cc (ma) operating current vs. temperature (v + =5v, v in + =2.5v) -6 -4 -2 0 2 4 6 -50 -25 0 25 50 75 100 125 ach bch cch dch temperature ta ( o c) output offset voltage v os (mv) output offset voltage vs. temperature (v + =5v, v in + =2.5v) 0 1 2 3 4 5 -50 -25 0 25 50 75 100 125 temperature ta ( o c) input common mode voltage range v icm (v) input common mode voltage range vs. temperature (v + =5v) i sink =12ma i source =12ma input common mode voltage range 0 10 20 30 40 50 60 70 -50 -25 0 25 50 75 100 125 temperature ta ( o c) source current i source (ma) source current vs. temperature (v + =5v, v in + =2.5v) 0 10 20 30 40 50 60 70 -50 -25 0 25 50 75 100 125 temperature ta ( o c) sink current i sink (ma) sink current vs. temperature (v + =5v, v in + =2.5v)
NJM2342 - 6 - ver.2007-01-05 memo [caution] the specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. the application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.
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