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ET2046 rev 1.2 2007-06-15 1/16 etek microelectronics ?? i/o ? ET2046 4 ?? 1.5v 5.5v ?? i/o ?? ET2046 2.5v ?? ??????????????????? ???? 2.7v ????? 0v 6v ??? ET2046 ??????? 2.7v ? 0.75mw ????? 125khz ???????? pdas bp ? ?? ET2046 ? -40 85 ? z ? ads7846 z ? 2.5v 5.5v z 1.5v 5.25v i/o ? z 2.5v ?? z ???? 0v 6v z ??? z ? z qspi tm spi tm 3 ?? z ?? z ?? tssop16(ET2046v) qfn16(ET2046y) ?? 1 2 3 4 5 6 7 89 10 11 12 13 14 15 16 ET2046 +vcc x+ y+ x- y- gnd vbat aux dclk cs din busy dout penirq iovdd vref 1 2 3 4 5 67 8 9 10 11 12 13 14 15 16 busy din cs dclk +vcc x+ y+ x- y- gnd vbat aux dout penirq iovdd vref ET2046 tssop16(ET2046v) qfn16(ET2046y) www.ic-jiazhi.com ????1? ??e (c) by foxit software company, 2004 foxit pdf editor ?- www.datasheet.co.kr datasheet pdf - http://www..net/
ET2046 rev 1.2 2007-06-15 2/16 ?? tssop16 qfn16 ? ? 1 5 +vcc ? 2 6 x+ x+ ? 3 7 y+ y+ ? 4 8 x- x- ? 5 9 y- y- ? 6 10 gnd ? 7 11 vbat ?? 8 12 aux adc ?? 9 13 vref ?? / 10 14 iovdd i/o ?? 11 15 penirq ? 12 16 dout dclk ?? cs ?? ?? 13 1 busy busy cs ???? 14 2 din ? cs ?? dclk ?? 15 3 cs ??????? / ? cs ? =power-down ?? (adc only) 16 4 dclk ???? sar ??? i/o ?? www.ic-jiazhi.com ????1? ??e (c) by foxit software company, 2004 foxit pdf editor ?- www.datasheet.co.kr datasheet pdf - http://www..net/
ET2046 rev 1.2 2007-06-15 3/16 ? ET2046 ????? sar adc ?????? ?? ET2046 ????? 2.5v ??????? 2.7v 5.25v ?????? 1v +vcc ????????? ? ??? x- y- z ??????????? ??????? adc ?????? ?????????????? ????? ? ? 1 ? ??? ET2046 ??? adc ????? 1 ? 2 ? a2 a1 a0 ser/ dfr ??? ET2046 ?? din ?? ??? +in -in ??????? ??????? 25pf ??? ???????? www.ic-jiazhi.com ????1? ??e (c) by foxit software company, 2004 foxit pdf editor ?- www.datasheet.co.kr datasheet pdf - http://www..net/
ET2046 rev 1.2 2007-06-15 4/16 1 ? din ???? ser/ dfr ?? 2 ? din ???? ser/ dfr ?? ? ET2046 ? 2.5v ???? pd1 ?????????? ?????????????? ads7843 ??????????? pd1=0 ????? ? 2 ???? +ref -ref ????? ET2046 1v +v cc ??1 ????????????????? ???? lsb ? 1lsb ? 12bit ???? 4096 ????? lsb ??? adc ?? 2.5v ????? 2lsbs 1v ???? 5lsbs ?????? 1.22mv ????????? ???? ripple ????????? ???? v ref ?????? cdac ????? <13 a ?????????????? 1 ? ?? ET2046 ?? ? y ???? ? x+ ? adc y+ y- x+ ???? 3 ??? ? x+ ???? ????????? y+ y- ??? y ?? ?????????? 0v ???? ????????????? www.ic-jiazhi.com ????1? ??e (c) by foxit software company, 2004 foxit pdf editor ?- www.datasheet.co.kr datasheet pdf - http://www..net/
ET2046 rev 1.2 2007-06-15 5/16 ? ? 3 ?????? ser/ dfr =1 y ?? x+ ?? ?? 5 ?? ser/ dfr =0 +ref -ref ? y+ x+ ?? ????????????????? ????????????? ? 4 ?????? ser/ dfr =0 y ?? x+ ?? ??????? +v cc v ref ? +ref ?????? ????????????????? ??? ET2046 ?????????? ? ? ??????? lcd ? ?????? ?????????? ? adc ???????????? www.ic-jiazhi.com ????1? ??e (c) by foxit software company, 2004 foxit pdf editor ?- www.datasheet.co.kr datasheet pdf - http://www..net/
ET2046 rev 1.2 2007-06-15 6/16 ???????? ET2046 dclk ???? ??? ET2046 ? 3 ??? 8 ??????????? ???? ET2046 ??????2 ET2046 ???? ?? power-down ?? pd0=1 ??? ET20460 ? ????? ET2046 ??? power-down ???? x y z ????? 15 ??? ?????? adc ??????????? ??? ??????? ET2046 ?????? ????? v be ????????? ? 25 ? v be ? v be ???????????? ET2046 ?? ? ???????????? ???????? ???? 20 g 20 a ?????? ? 600mv ????? mv ?????? tc ????? 2.1mv/ ????????????? ??????? 0.3 /lsb 12-bit ?? ? 5 ?????? ?????? ???????? ?? 2 ???????????? 91 ???? ?? (1) ? q kt ln(n) (1) n ?? =91 k= 1.3805410 -23 ? / ?? q= ? 1.60218910 -19 c t= ? ????????????????? www.ic-jiazhi.com ????1? ??e (c) by foxit software company, 2004 foxit pdf editor ?- www.datasheet.co.kr datasheet pdf - http://www..net/
ET2046 rev 1.2 2007-06-15 7/16 ?? q ln(n)) * k ( v (2) v=v(i 91 )-v(i 1 )( ? mv) ? =2.573 /mv v 2.573 v(mv)-273 ??? ET2046 ? dc/dc ?????? 6 ??? 0v 6v ??? ET2046 ??? 2.7v 3.3v ? ? 4 5.5v ???? adc 1.375v ???????????? a2=0 a1=1 a0=0 ??? ? 6 ???? ? ? ET2046 ???????????? ???????? 8-bit ???? 12-bit ? ?? ?? ET2046 ?????? x ??k x ?????? z1 z2 ? 7 ? (3) ?? s r touch r plate x ? ) 1 z z ( 4096 position x 1 2 ? ? (3) ???? x ? y ??k x y ? z1 (4) ?? s r touch = ) 4096 position y 1 ( r ) 1 z 4096 ( 4096 position x r plate y 1 plate x ? ? ? ? ? ? ? ? (4) www.ic-jiazhi.com ????1? ??e (c) by foxit software company, 2004 foxit pdf editor ?- www.datasheet.co.kr datasheet pdf - http://www..net/
ET2046 rev 1.2 2007-06-15 8/16 ? 7 ??? ?? ET2046 ??????? 8 ? 8 ????? 24 ?? 8 ??? www.ic-jiazhi.com ????1? ??e (c) by foxit software company, 2004 foxit pdf editor ?- www.datasheet.co.kr datasheet pdf - http://www..net/
ET2046 rev 1.2 2007-06-15 9/16 ????????????? ?? spi ssi microwire tm ??? 8 ??? 3 ?? dclk 24 ?? ? 8 ?? din ?? ???????? ?????????? 3 ?????? ? ???? ? - ???????? ??? 12 ???????? ser/ dfr 0 ? ??? 13 ? 1bit ?? 3 ??? dout ?? ??? ? din ??? ET2046 ????? adc ?? ? power-down ????? 3 ? 8 3 ? 4 ?? ? ? ? s ????????? ET2046 din ?? ? ? 3 a2 a1 a0 ? 1 2 ? 2 ? ??? ?? ? ?? adc ????? 12-bit ???? ? 8-bit ?? ser/ dfr ?ser/ dfr ???????????? ? ??????? x y ??????? ???????????? adc ?? ????????????????? v ref ? gnd ???? 1-2 ? 1-4 ???2 x y ??? ?? ET2046 ??????????? adc ?? ????????? 2.7v ? ?????? x y ??????? bit7(msb) bit6 bit5 bit4 bit3 bit2 bit1 bit0(lsb) s a2 a1 a0 mode ser/ dfr pd1 pd0 3 ? bit 7 s start bit. control byte starts with first high bit on din.a new control byte can start every 15th clock cycle in 12-bit conversion mode or every 11th clock cycle in 8-bit conversion mode (see figure 13). 6-4 a2-a0 channel select bits. along with the ser/dfr bit, these bits control the setting of the multiplexer input, touch drivers witches, and reference inpu ts (see tables i and ii). 3 mode 12-bit/8-bit conversion select bit. this bit controls the number of bits for the next conversion: 12-bits(low) or 8-bits (high). 2 ser/ dfr single-ended/differential reference select bit. along with bits a2-a0, this bit controls the setting of the multiplexer input, touch driver switches, and reference inputs (see tables i and ii). 1-0 pd1-pd0 power-down mode select bits. refer to table v for details. 4 www.ic-jiazhi.com ????1? ??e (c) by foxit software company, 2004 foxit pdf editor ?- www.datasheet.co.kr datasheet pdf - http://www..net/
ET2046 rev 1.2 2007-06-15 10/16 pd0 pd1 - 5 power-down ?????????? adc ????????????? adc ? ??????????? ET2046 ?? pd1 pd0 penirq 0 0 enabled power-down between conversions. when eac h conversion is finished, the converter enters a low-power mode. at the start of the next conversion, the device instantly powers up to full power. there is no need for additional delays to ensure full operation, and the very first conversion is valid. the y? switch is on when in power-down. 0 1 disabled reference is off and adc is on. 1 0 enabled reference is on and adc is off. 1 0 disabled device is always powered. reference is on and adc is on. 5 power-down ????? penirq ? 9 ???? power-down ??2 pd0=0 ? y ? y ?? penirq ?? x+ ??? x+ ?? ET2046 ??? 50k ? ?????? 36k ? 67k ? ? ?? penirq ?? 0.35*(+vcc) ??? x+ y- ? 21k ? penirq ???????????? x+ y+ z ?? x+ penirq ?????? ????2? ? penirq ?? x+ y+ z ???? penirq ??? ????? ET2046 ??? pd0=1 ? ???????????? ET2046 ? pd0=0 ?? ET2046 ?? pd0=0 ?????? ??? bit1 ? ET2046 ? dclk ?? ???? ET2046 ? penirq ? ????? penirq ?? ? 9 penirq ?? www.ic-jiazhi.com ????1? ??e (c) by foxit software company, 2004 foxit pdf editor ?- www.datasheet.co.kr datasheet pdf - http://www..net/
ET2046 rev 1.2 2007-06-15 11/16 16 ??? ? 10 ?? n+1 ??? n ????? 16 ?????? ???????????????? 1.6ms ? ????????? ? 10 ??? 16 ???? 8 ?? ?? dclk ? ? ? 8 ? 11 ? 6 ? ET2046 ????? ? 11 ??? +v cc *2.7v +v cc *iov dd *1.5v c load =50pf ? ? ? t acq acquisition time 1.5 s t ds din valid prior to dclk rising 100 ns t dh din hold after dclk high 50 ns t do dclk falling to dout valid 200 ns t dv cs falling to dout enabled 200 ns t tr cs rising to dout disabled 200 ns t css cs falling to first dclk rising 100 ns t csh cs rising to dclk ignored 10 ns t ch dclk high 200 ns t cl dclk low 200 ns t bd dclk falling to busy rising/falling 200 ns www.ic-jiazhi.com ????1? ??e (c) by foxit software company, 2004 foxit pdf editor ?- www.datasheet.co.kr datasheet pdf - http://www..net/
ET2046 rev 1.2 2007-06-15 12/16 t bdv cs falling to busy enabled 200 ns t btr cs rising to busy disabled 200 ns 6 ?? ta=-40 +85 15 ??? ? 11 ? ET2046 ?????????? ????? 15 ??????? fpgas ?? asics ??????? ? 12 ? 15 ??? ?? ET2046 ????? ? 13 ? ????? ??? ? 13 ? ??? ET2046 ?? 8bit ????????????? 8bit ????? 4 ?????? 4 ? 25% ? ??????? ET2046 ?????? ?? ? 8 ?????? 50% ????????? 1 www.ic-jiazhi.com ????1? ??e (c) by foxit software company, 2004 foxit pdf editor ?- www.datasheet.co.kr datasheet pdf - http://www..net/
ET2046 rev 1.2 2007-06-15 13/16 ? +vcc iov dd gnd -0.3 +6 v ?? -0.3 +v cc +0.3 v ? -0.3 iov dd +0.3 v 250 mw ? +150 ?? -40 +85 ?? -65 +150 ??? 10s +300 (? , ? t a =-40 +85 +v cc =+2.7v v ref =2.5v ?? f sample =125khz f clk =16* f sample =2mhz 12-bit ?? , =gnd iov dd +v cc *iov dd ) ? ? ? ? ? ? 0 v ref v -0.2 +v cc +0.2 v ? -0.2 +0.2 v 25 pf ? 0.1 a ?? ? 12 bits ? 11 bits ? 2 lsb (1) ? 6 lsb ? v ref 4 lsb ? v ref 70 vrms ?? 70 db ? ?? 12 clk cycles ?? 3 clk cycles ? 125 khz ?? 500 ns ?? 30 ns ? 100 ps ? v in 2.5vpp(50khz) 100 db ? y+, x+ 5 ? y- , x - 6 ? (2) ? 100ms 50 ma www.ic-jiazhi.com ????1? ??e (c) by foxit software company, 2004 foxit pdf editor ?- www.datasheet.co.kr datasheet pdf - http://www..net/
ET2046 rev 1.2 2007-06-15 14/16 ? ?? 2.45 2.50 2.55 v ??? 15 ppm / ? 500 a ? 1.0 +v cc v ser/ dfr =0, pd1=0 1 g ? ??? ?? 250 ? ? ? 0.5 6.0 v 10 k ? ?? 1 g ? v bat 0.5v 5.5v ? v ref =2.5v -2 +2 % v bat 0.5v 5.5v ?? -3 +3 % ?? ?? -4 0 +85 ? ?? (3) 1.6 temp0 (4) 0.3 ?? (3) 2 temp0 (4) 3 / ?? cmos ? 5 15 pf v ih | i ih | +5 a iovdd*0.7 iovdd +0.3 v v il | i il | +5 a -0.3 0.3* iovdd v v oh i oh =-250 a iovdd*0.8 v v ol i ol =250 a 0.4 v ?? ?? +v cc (5) 2.7 3.6 v 2.2 5.25 v iovdd (6) 1.5 +v cc v ? (7) ??? 280 650 a ?? 780 a f sample =12.5khz 220 a power-down ?? cs dclk din iov dd 3 a www.ic-jiazhi.com ????1? ??e (c) by foxit software company, 2004 foxit pdf editor ?- www.datasheet.co.kr datasheet pdf - http://www..net/
ET2046 rev 1.2 2007-06-15 15/16 +v cc =+2.7v 1.8 mw ?? -40 +85 ? 1 lsb ? v ref =2.5v ? 1 lsb=610 v 2 ??? 50ma ???? 3 temp0 temp1 ????? 4 ?? -2.1mv/ . 5 ET2046 ?? 2.2v 6 iov dd -(+v cc ) 7 +v cc iov dd ??? pd0 0 ? aux ?? ?? ET2046 +vcc x+ y+ x- y- gnd vbat aux dclk cs din busy dout penirq iovdd vref serial/conversion clock chip select serial data in converter status serial data ou t pen interru pt to b at tery auxiliary input voltag e regulator to u ch screen +2.7vto+5v + 1 f to 10 f (optional) 0.1 f 1 2 3 4 5 6 7 89 10 11 12 13 14 15 16 * ? www.ic-jiazhi.com ????1? ??e (c) by foxit software company, 2004 foxit pdf editor ?- www.datasheet.co.kr datasheet pdf - http://www..net/
ET2046 rev 1.2 2007-06-15 16/16 ?? tssop16 0.65 4.400.10 6.400.20 4.960.10 1.20max 0.600.15 uni t mm 0.10 0 8 0.90 1.05 0.05 0.15 0.20 0.28 qfn16 4.00 0.10 0.65bsc 0.30 0.05 0.55 0.10 2.15 0.15 0.75 0.05 bottom vlew sl e d vl e w unit:mm 0.00 0.05 4.00 0.10 www.ic-jiazhi.com ????1? ??e (c) by foxit software company, 2004 foxit pdf editor ?- www.datasheet.co.kr datasheet pdf - http://www..net/

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