- 1 - NJU7028 ver.2011-04-06 13a/ch, rail-to-rail output quad cmos operational amplifier general description package outline the NJU7028 is a low power, quad cmos operational amplifier. it is tolerant to rf noise. the NJU7028 can operate from a single-supply voltage of +1.8v to +5.5v. in addition, this amplifier features rail-to-rail output and low input bias current (1pa). because of these features, the NJU7028 is ideal for low-side current sense amplifier. the very low supply current of the NJU7028 (13a/ch) makes it suitable for battery-operated application. features low supply current i dd =13 a/ch typ. low operating voltage vopr= 1.8v to 5.5v rail-to-rail output v oh =4.9v min./ v ol =0.1v max. (at v dd = 5v, r l =100k ? ) v oh =4.8v min./ v ol =0.2v max. (at v dd = 5v, i o =1ma) enhanced rf noise immunity cmos process package ssop14 application battery-operated application battery monitor current sensor photodiode amplification pin configuration NJU7028 v (ssop14) 1 2 3 4 14 13 12 11 5 6 7 10 9 8 1 23 4 pin function 1. output 1 8. output 3 2. -input 2 9. -input 3 3. +input 2 10. +input 3 4. v dd 11. v ss 5. +input 2 12. +input 4 6. -input 2 13. -input 4 7. output 2 14. output 4 top view
NJU7028 - 2 - ver.2011-04-06 absolute maximum ratings (ta=25 ? c, unless otherwise noted.) (note1) for supply voltage less than +7v, the absol ute maximum rating is equal to the supply voltage. (note2) eia/jedec standard te st board (114.3 x 76.2 x 1.6mm, 2layers, fr-4) mounting. (note3) do not exceed ?power dissipation: p d ? in which power dissipation in ic is shown by the absolute maximum rating. see figure ?power dissipation curve? when ambient temperature is over 25 ? c. recommended operating condition (ta=25 ? c) parameter symbol rating unit supply voltage v dd 1.8 to 5.5 v parameter symbol ratings unit supply voltage v dd +7 v input common mode voltage v icm v ss -0.3 to v dd +0.3 v differential input voltage v id 7 (note1) v power dissipation p d 400 (note2) mw operating temperature range t opr -40 to +85 ? c storage temperature range t stg -55 to +125 ? c power dissipation derating curve 0 100 200 300 400 500 600 5 25456585105125 ambient temperature ta (c) power dissipation pd (mw) (a) ? pd=-4mw/c(note2) figure 1
NJU7028 - 3 - ver.2011-04-06 electrical characteristics dc characteristics (v dd =5v, v ss =0v, ta=25 ? c, unless otherwise noted.) parameter symbol test condition min. typ. max. unit supply current i dd no signal - 48 72 a input offset voltage v io v ic =0v, r s =50 ? - 0.9 4 mv input offset voltage drift ? v io / ? t - 1.5 - v/oc input bias current i b - 1 - pa input offset current i io - 1 - pa open loop gain a v v o =0.5v to 4.5v, r l =100k ? to 2.5v 70 90 - db common mode rejection ratio cmr v icm =0v to 4.1v 65 80 - db supply voltage rejection ratio svr v dd =1.8v to 5.5v 70 90 - db v oh 1 r l =100k ? to 2.5v 4.9 4.95 - v maximum output voltage 1 v ol 1 r l =100k ? to 2.5v - 0.05 0.1 v v oh 2 r l =100k ? to 0v 4.9 4.95 - v maximum output voltage 2 v ol 2 r l =100k ? to 0v - 0.02 0.05 v v oh 3 isource=1ma 4.8 4.85 - v maximum output voltage 3 v ol 3 isink=1ma - 0.15 0.2 v common mode input voltage range v icm cmr 65db 0 - 4.1 v ac characteristics (v dd =5v, v ss =0v, ta=25 ? c, unless otherwise noted.) parameter symbol test condition min. typ. max. unit gain bandwidth product gbw r l =100k ? to 2.5v, c l =20pf, f=10khz - 160 - khz phase margin m r l =100k ? to 2.5v, c l =20pf - 80 - deg gain margin g m r l =100k ? to 2.5v, c l =20pf - 15 - db equivalent input noise voltage e n f=1khz - 50 - nv/ hz slew rate sr g v =0db, r l =100k ? to 2.5v, c l =20pf, vin=3vpp (1v to 4v) (note4) (note5) - 0.05 - v/us power bandwidth pbw g v =6db, r f =50k ? , r g =50k ? , c l =20pf, vin=2.5vpp (1.25v to 3.75v), vo 4.8vpp (note6) - 5 - khz total harmonic distortion thd g v =6db, r f =50k ? , r g =50k ? , c l =20pf, vo=4vpp, f=100hz (note6) - 0.01 - % (note4) slew rate is defined by the lower value of the rise or fall. (note5) see figure2-1 for test circuit. (note6) see figure2-3 for test circuit.
NJU7028 - 4 - ver.2011-04-06 electrical characteristics dc characteristics (v dd =3v, v ss =0v, ta=25 ? c, unless otherwise noted.) parameter symbol test condition min. typ. max. unit supply current i dd no signal - 45 68 a input offset voltage v io vic=0v, r s =50 ? - 0.9 4 mv input offset voltage drift ? v io / ? t - 1.5 - v/oc input bias current i b - 1 - pa input offset current i io - 1 - pa open loop gain a v vo=0.5v to 2.5v, r l =100k ? to 1.5v 70 90 - db common mode rejection ratio cmr v icm =0v to 2.1v 65 80 - db supply voltage rejection ratio svr v dd =1.8v to 5.5v 70 90 - db v oh 1 r l =100k ? to 1.5v 2.9 2.95 - v maximum output voltage 1 v ol 1 r l =100k ? to 1.5v - 0.05 0.1 v v oh 2 r l =100k ? to 0v 2.9 2.95 - v maximum output voltage 2 v ol 2 r l =100k ? to 0v - 0.02 0.05 v v oh 3 isource=1ma 2.8 2.85 - v maximum output voltage 3 v ol 3 isink=1ma - 0.15 0.2 v common mode input voltage range v icm cmr 65db 0 - 2.1 v ac characteristics (v dd =3v, v ss =0v, ta=25 ? c, unless otherwise noted.) parameter symbol test condition min. typ. max. unit gain bandwidth product gbw r l =100k ? to 1.5v, c l =20pf, f=10khz - 150 - khz phase margin m r l =100k ? to 1.5v, c l =20pf - 80 - deg gain margin g m r l =100k ? to 1.5v, c l =20pf - 15 - db equivalent input noise voltage e n f=1khz - 50 - nv/ hz slew rate sr g v =0db, r l =100k ? to 1.5v, c l =20pf, vin=1vpp (1v to 2v) (note4) (note5) - 0.05 - v/us power bandwidth pbw g v =6db, r f =50k ? , r g =50k ? , c l =20pf, vin=1.5vpp (0.75v to 2.25v), vo 2.8vpp (note6) - 8 - khz total harmonic distortion thd g v =6db, r f =50k ? , r g =50k ? , c l =20pf, vo=2vpp, f=100hz (note6) - 0.01 - % (note4) slew rate is defined by the lower value of the rise or fall. (note5) see figure2-1 for test circuit. (note6) see figure2-3 for test circuit.
NJU7028 - 5 - ver.2011-04-06 electrical characteristics dc characteristics (v dd =1.8v, v ss =0v, ta=25 ? c, unless otherwise noted.) parameter symbol test condition min. typ. max. unit supply current i dd no signal - 43 65 a input offset voltage v io vic=0v, r s =50 ? - 0.9 4 mv input offset voltage drift ? v io / ? t - 1.5 - v/oc input bias current i b - 1 - pa input offset current i io - 1 - pa open loop gain a v vo=0.5v to 2.5v, r l =100k ? to 0.9v 70 90 - db common mode rejection ratio cmr v icm =0v to 0.9v 65 80 - db supply voltage rejection ratio svr v dd =1.8v to 5.5v 70 90 - db v oh 1 r l =100k ? to 0.9v 1.7 1.75 - v maximum output voltage 1 v ol 1 r l =100k ? to 0.9v - 0.05 0.1 v v oh 2 r l =100k ? to 0v 1.7 1.75 - v maximum output voltage 2 v ol 2 r l =100k ? to 0v - 0.02 0.05 v v oh 3 isource=0.5ma 1.5 1.55 - v maximum output voltage 3 v ol 3 isink=0.5ma - 0.25 0.3 v common mode input voltage range v icm cmr 65db 0 - 0.9 v ac characteristics (v dd =1.8v, v ss =0v, ta=25 ? c, unless otherwise noted.) parameter symbol test condition min. typ. max. unit gain bandwidth product gbw r l =100k ? to 0.9v, c l =20pf, f=10khz - 140 - khz phase margin m r l =100k ? to 0.9v, c l =20pf - 80 - deg gain margin g m r l =100k ? to 0.9v, c l =20pf - 15 - db equivalent input noise voltage e n f=1khz - 50 - nv/ hz slew rate sr g v =0db, r l =100k ? to 1.5v, c l =20pf, vin=0.5vpp (0.3v to 0.8v) (note4) (note7) - 0.05 - v/us power bandwidth pbw g v =6db, r f =50k ? , r g =50k ? , c l =20pf, vin=0.9vpp (0v to 0.9v), vo 1.6vpp (note8) - 14 - khz total harmonic distortion thd g v =6db, r f =50k ? , r g =50k ? , c l =20pf, vo=1vpp, f=100hz (note8) - 0.01 - % (note4) slew rate is defined by the lower value of the rise or fall. (note7) see figure2-2 for test circuit. (note8) see figure2-4 for test circuit..
NJU7028 - 6 - ver.2011-04-06 measurement circuits v dd r f r g vout vin c l v dd 2 v dd r f r g vout vin c l v dd vout vin c l r l v dd vout vin c l v dd 2 r l figure 2-1:measurement circuit 1 figure 2-2:measurement circuit 2 figure 2-3:measurement circuit 3 figure 2-4:measurement circuit 4
NJU7028 - 7 - ver.2011-04-06 typical characteristics supply current vs. supply voltage (temperature) g v =0db 0 10 20 30 40 50 60 01234567 supply voltage [v] supply current [a] ta=-40oc ta=-50oc ta=125oc ta=85oc ta=25oc supply current vs. temperature (supply voltage) g v =0db 0 10 20 30 40 50 60 -50 -25 0 25 50 75 100 125 ambient temperature [oc] supply current [a] v dd =3.0v v dd =5.5v v dd =5.0v v dd =1.8v input offset voltage vs. temperature (supply voltage) v icm =v dd /2 -4.0 -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 4.0 -50 -25 0 25 50 75 100 125 ambient temperature [oc] input offset voltage [mv] v dd =3v v dd =5v v dd =1.8v input offset voltage vs. common mode input voltage (temperature) v dd =3v -4.0 -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 4.0 -2.0 -1.0 0.0 1.0 2.0 3.0 4.0 common mode in put voltage [v] input offset voltage [mv] ta=-40oc ta=25oc ta=85oc input offset voltage distribution v dd =5v, v icm =0v, ta=25oc, n=240 0 10 20 30 40 50 60 70 80 90 100 110 120 -4.5 -3.5 -2.5 -1.5 -0.5 0.5 1.5 2.5 3.5 4.5 input offset voltage [mv] number of amplifier input offset voltage drift distribution v dd =5v, v icm =0v, ta=-40 to 85oc, n=240 0 10 20 30 40 50 60 70 80 90 100 110 120 -9.0 -7.0 -5.0 -3.0 -1.0 1.0 3.0 5.0 7.0 9.0 input offset voltage drift [v/oc] number of amplifier
NJU7028 - 8 - ver.2011-04-06 typical characteristics cmr vs. temperature (supply voltage) v icm =0v v dd -0.9v 0 20 40 60 80 100 120 140 -50 -25 0 25 50 75 100 125 ambient temperature [oc] common mode rejection ratio [db] v dd =3v v dd =5v v dd =1.8v svr vs. temperature v dd =1.8v 5.5v 0 20 40 60 80 100 120 -50 -25 0 25 50 75 100 125 ambient temperature [oc] supply voltage rejection ratio [db] output voltage vs. output current (temperature) v dd =5v, v cm =2.5v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0.001 0.01 0.1 1 10 100 output current [ma] output voltage [v] ta=85oc ta=-40oc ta=25oc ta=85oc ta=-40oc ta=25oc gain vs. temperature v o =0v vdd-0.5v, r l =100k ? to 0v 0 20 40 60 80 100 120 -50 -25 0 25 50 75 100 125 ambient temperature [oc] voltage gain [db] v dd =5v v dd =3v v dd =1.8v output voltage vs. output current (temperature) v dd =3v, v cm =1.5v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0.001 0.01 0.1 1 10 100 output current [ma] output voltage [v] ta=85oc ta=-40oc ta=25oc ta=85oc ta=-40oc ta=25oc output voltage vs. output current (temperature) v dd =1.8v, v cm =0.9v 0.0 0.3 0.6 0.9 1.2 1.5 1.8 0.001 0.01 0.1 1 10 100 output current [ma] output voltage [v] ta=85oc ta=-40oc ta=25oc ta=85oc ta=-40oc ta=25oc
NJU7028 - 9 - ver.2011-04-06 typical characteristics gain / phase vs. frequency r f =1m ? , r g =10k ? , r l =100k ? , c l =20pf, ta=25oc -60 -40 -20 0 20 40 60 100 1k 10k 100k 1m 10m frequency[hz] voltage gain [db] -180 -120 -60 0 60 120 180 phase [deg] gain phase v dd =5v v dd =3v v dd =1.8v v dd =5v v dd =3v v dd =1.8v gain / phase vs. frequency (load capacitance) v dd =3v, r f =1m ? , r g =10k ? , r l =100k ? , ta=25oc -60 -40 -20 0 20 40 60 100 1k 10k 100k 1m 10m frequency [hz] voltage gain [db] -180 -120 -60 0 60 120 180 phase [deg] gain phase c l =150pf c l =100pf c l =20pf c l =20pf c l =100pf c l =150pf thd+noise vs. output voltage v dd =3v, gv=6db, r f =50k ? , c l =20pf bw=10hz-500khz, ta=25oc 0.001 0.01 0.1 1 10 0.001 0.01 0.1 1 10 output voltage [vrms] total harmonic distortion+noise[%] f=100hz f=20hz channel separation vs. frequency v dd =3v, g v =40db, r f =100k ? , r l =open, v o =0.5vrms, ta=25oc -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 10 100 1k 10k 100k frequency [hz] channel separation [db] a c a b a d voltage noise vs. frequency v dd =3v, g v =40db, r f =100k ? , r g =1k ? , ta=25oc 0 20 40 60 80 100 120 140 160 180 200 1 10 100 1k 10k frequency [hz] equivalent input noise voltage [nv/ hz]
NJU7028 - 10 - ver.2011-04-06 typical characteristics [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. pulse response (load capacitance) v dd =3v, gv=0db, r l =100k ? , ta=25oc -1 -1 0 1 1 2 2 3 000000000 10s/div. 0.5v/div. -3 -2 -2 -1 -1 0 1 1 input c l =120pf c l =100pf c l =20pf output pulse response (load capacitance) v dd =3v, gv=0db, r l =100k ? , ta=25oc -1 -1 0 1 1 2 2 3 000000000 10s/div. 0.5v/div. -3 -2 -2 -1 -1 0 1 1 input c l =120pf c l =100pf c l =20pf output
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