ver.3 NJW5211 -1- 8bit 8ch d/a converter general description package outline the NJW5211 is 8bit 8ch d/a converter for electronic adjustment. 8ch dc out put can be independently controlled by three-wire serial interface. the NJW5211 features low operating voltage(2.7v) and can be full-swing outputted regardless of supply voltage. the small package(ssop14) is suitable for portable applications. features low operating voltage 2.7 to 5.5v 8bit 8ch d/a converters adopting r-2r system 3-wire 11-bit serial interface internal power on reset circuit bi-cmos technology package outline ssop14 block diaglam and pin diagram pin no. pin name in/out description 1 ao2 out analog output 2 ao3 out analog output 3 ao4 out analog output 4 vcc - vcc 5 ao5 out analog output 6 ao6 out analog output 7 ao7 out analog output 8 ao8 out analog output 9 d1 in serial data input 10 clk in serial clk input 11 ld in serial load input 12 test - test terminal 13 gnd - gnd 14 ao1 out analog output NJW5211v ao1 gnd r- 2 r da c r- 2 r da c r- 2 r da c 8bitreg +de c 8bitreg +de c 8bitreg +de c serial interface ao4 ao3 ao2 po w e r o n res et r- 2 r da c r- 2 r da c r- 2 r da c 8bitreg +de c 8bitreg +de c 8bitreg +de c ao6 ao5 r- 2 r da c r- 2 r 8bitreg +de c 8bitreg clk di ao7 vcc +de c ao8 ld tes t da c 1 2 3 4 5 6 7 8 9 10 11 12 13 14
ver.3 NJW5211 - 2 - abosolute maximum ratings (ta=25 c) parameter symbol rating unit supply voltage v + -0.3 to 7.0 v terminal voltage vin -0.3 to v + v power dissipation p d 300 mw operating temperature range topr -40 to +85 c storage temperature range tstg -40 to +150 c recommended operating condition (ta=25 c) parameter symbol test condition min. typ. max. unit operating voltage vopr 2.7 - 5.5 v analog output source current iol - - 1.0 ma analog output sink current ioh - - 1.0 ma serial clock frequency fsclk - 1.0 - mhz limit road capacitance cl - - 0.1 f electrical characteristics ( v + =3.0v, ta=25 c) parameter symbol test condition min. typ. max. unit operating current i cc clk=1mhz 80h set - 0.75 1.5 ma input low voltage vil 0 - 0.3 v input high voltage vih 1.8 - v + v input low current iil - - 10 a input high current iih - - 10 a zs1 00h set ioh=0.0ma 0 - 0.1 zs2 00h set ioh=0.5ma 0 - 0.2 minimum output voltage zs3 00h set ioh=1.0ma 0 - 0.3 v fs1 ffh set iol=0.0ma v + -0.1 - v + fs2 ffh set iol=0.5ma v + -0.2 - v + maximum output voltage fs3 ffh set iol=1.0ma v + -0.3 - v + v resolution res - 8 - bit difference non-linearity error dnl input code 02h to fdh -1.0 - 1.0 lsb integral non-linearity error inl input code 02h to fdh -1.5 - 1.5 lsb power on reset parameter symbol test condition min. typ. max. unit v + supply voltage rise time trvcc v+=0 2.7v 10 - - ms power on reset voltage vpor - 1.9 - v
ver.3 NJW5211 - 3 - condition of operating timing parameter symbol test condition min. typ. max. unit clk l level pulse width tclkl 200 - - ns clk h level pulse width tclkh 200 - - ns di setup time tsdi 30 - - ns di hold time thdi 60 - - ns ld setup time tsld 200 - - ns ld hold time thld 100 - - ns ld ?h? level pulse width tldh 100 - - ns analog output delay time voltage tout cl=50pf, rl=10k ? - - 300 s *a signal level is judged at 80% or 20% of v + 0.8v + 0.2v + clk tclkl 0.8v + tclkh di 0.2v + 0.8vcc 0.2vcc tsdi thdi tsl ld ld ld ld 0.8v + 0.2v + tldh thldh t ou output
ver.3 NJW5211 - 4 - command sending control command is 3wire 10bit serial interface.(msb first) data is taken in with rise edge on the clk and output data is fixed in the ld high section. data is maintained in the ld low section. lsb(last) msb(first) data set channel select d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 data set d0 d1 d2 d3 d4 d5 d6 d7 analog output voltage level 0 0 0 0 0 0 0 0 gnd 1 0 0 0 0 0 0 0 (v + -gnd)/256x1 0 1 0 0 0 0 0 0 (v + -gnd)/256x2 1 1 0 0 0 0 0 0 (v + -gnd)/256x3 0 0 1 0 0 0 0 0 (v + -gnd)/256x4 : : : : : : : : 0 1 1 1 1 1 1 1 (v + -gnd)/256x254 1 1 1 1 1 1 1 1 (v + -gnd)/256x255 channel select d8 d9 d10 address select 0 0 0 ao1 1 0 0 ao2 0 1 0 ao3 1 1 0 a04 0 0 1 a05 1 0 1 ao6 0 1 1 ao7 1 1 1 ao8 [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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