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[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 1 - 1. genaral description a k2975 is the dual channel precision cmos operational amplifiers which is available to output with low input offset voltage (200 v typ.) , high band width and low noise. ak2975 is appropriated to sensor pre amp. applications. 2. feartures ak2975 is the dual channel precision cmos operational amplifiers which is available to output with low input offset voltage (200 v t yp.) , high band width and low noise. ak2975 is appropriated to sensor pre amp. applications . ? single supply operation range : 2.7v ~ 5.5v ? low input offset voltage : 200 v typ. offset drift : 1 v/ c typ. input voltage noise : 10nvrms / hz typ. (@ 1khz) input common mode range : vss to vdd output voltage range : [vss+0.03] to [vdd - 0.03]v @ (rl:10k ) ? power supply current : 4ma/ch. typ. (vdd: 5v, no load) ? gain bandwidth : 50mhz typ. ? slew rate : 20v/ sec typ. ? operating temperature range : - 40 ~ 125 c ? package : msop8 part name channel number package AK2975H 2 msop8 precision high speed low noise operational amplifier ak 2975
[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 2 - 3. table of contents 1. genaral description ................................ ................................ ................................ ............................ 1 2. feartures ................................ ................................ ................................ ................................ ............. 1 3. table of contents ................................ ................................ ................................ ................................ 2 4. pin locatio n ................................ ................................ ................................ ................................ ........ 2 5. pin function descriptions ................................ ................................ ................................ ................... 3 6. absolute maximum ratings ................................ ................................ ................................ ................ 3 7. recommended operating conditions ................................ ................................ ................................ . 3 8. electrical characteristics ................................ ................................ ................................ ..................... 4 9. typical operating characteristics (for reference) ................................ ................................ ............... 6 10. package ................................ ................................ ................................ ................................ ............ 14 11. ordering guide ................................ ................................ ................................ ................................ .. 16 4. pin location 8 - pin msop ak 297 5 h 2:nina 4:vss 1:outa 8:vdd 5:pinb 3:pina 7:outb 6:ninb a b figure 4.1 ak2975 pin location
[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 3 - 5. pin function descriptions pin number name i/o (* 1) function 1 outa ao amplifier a output 2 nina ai amplifier a inverted input 3 pina ai amplifier a no inverted input 4 vss pwr power supply ground 5 pinb ai amplifier b no inverted input 6 ninb ai amplifier b inverted input 7 outb ao amplifier b output 8 vdd pwr positive power supply note * 1. pwr : power supply ai : analog input ao : analog output 6. absolute maximum ratings vss=0v (* 2) parameter symbol min max units supply voltage vdd - 0.3 6.5 v input voltage v td - 0.3 vdd + 0.3 v input current i in - 10 +10 ma storage temperature range t stg - 65 150 ? c note * 2. all voltage with respect to ground [warning] operational at or beyond these limits may result in permanent damage to the device. normal operation is not guaranteed at these extremes. 7. recommended operating conditions vss=0v (* 2) parameter symbol m in . t yp . m ax . units conditions operationg temperature range t a - 40 125 ? c ground level (* 2) vss 0 0 0 v supply voltage vdd 2.7 5.5 v [warning] we asuumes no responsibility for the usage beyond the conditions in this datasheet.
[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 4 - 8. electrical characteristics ? dc characteristics ( typical condition is vdd= 5v, v cm = vdd/2 (* 3), ta= 25oc ) vdd= 5.0v, vcm= vdd/2, vss= 0v, ta= - 40~125 ? c , unless otherwise noted parameter m in . t yp . m ax . units conditions input voltage offset :v io 200 1000 ? v vcm = vdd/2 (* 3) input voltage offset drift :v iod 1 3.5 ? v/ ? c (* 4) input bias current :i s 1 200 pa input common mode range :v icm vss vdd v output voltage swing :v om 0.03 vdd - 0.03 v rl ? 10k common mode rejection ratio:cmr 60 90 db (* 5) power supply rejection ratio :svr 80 100 db (* 6) large signal voltage gain :a v 95 1 15 db rl ? 10k ? connected to vdd/2 (* 7) output short current :i os 450 ma output current :i o 350. ma power supply current :idd 4 5 ma/ch. vdd:5v (* 8) notes * 3. v cm means the common voltage of an input pin (pin/nin). * 4. v iod = [( high temperature side wst(**)) C ( low temperature side wst(**))]/[125c ( 40c) ] ** wst is min. or max. value of v io . ex.) if high temperature side is max. and low temperature side is min. the v iod polarity is positive. and if high temperature side is min. and low temperature side is max. the v iod polarity is negative. * 5. cmrr = 2 0 x log[(vdd - vss) / ( )] ( ) is a max. value among [(offset at input = vdd) - (offset at input = vss)] and [(offset at input = vdd) - ( offset at input = vdd/2)] and [(offset at input = vdd/2) - ( offset at input = vss)]. * 6. psrr = 20 x log[( max. supply voltage C min. supply voltage) / (offset at max. supply voltage C offset at min. supply voltage)] * 7. a v = 20log [ ((vdd - 0. 2 ) (vss+0. 2 )) / ((offset at output= vdd 0. 2 ) (offset at output = vss+0. 2 ) ] * 8. it contains consumption of one op amp circuit. it doesn't include an output drive current.
[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 5 - ? ac characteristics vdd= 5.0v, v cm = vdd/2, vss= 0v, ta= - 40~125 ? c , unless otherwise noted parameter min. typ. max. units conditions gain bandwidth (gbw) 50 mhz ta=25 ? c slew rate 20 v/ ? s ta=25 ? c input voltage noise 10 nvrms / ( @1khz :iin1 5 nvrms / ( @10khz :iin2 thd+n 0.0003 % input :1khz, 1vrms, av:1v/v, vdd=5.0v, bw:20hz ~ 20khz ta=25 ? c overload recovery time :t or 160 n sec av= - 10 times, input swing:300mv (2.5v) @90% (* 9) input capacitance differencial 8 pf common 7 pf maximum capacitance loads :c l 1000 pf if the 10 resistor is connected in series to the output. note * 9. the definition of o verload recovery time is following. ? positive side overload recovery time (time until it returns to vdd/2 from vdd saturation) figure 8.1 positive side o verload recovery time
[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 6 - ? negative side o verload recovery time ( time until it returns to vdd/2 from v ss saturation ) note * 10 . notes for a board design ak2975 is high - bandwidth amplifier. therefore if large impedance and inductance are included to a power supply line, the characteristic may get worse. please place the decoupling capacitor of "0.1 ? f and 10 ? f" of a low loss near the power supply pin ,between each power supply terminal and a ground. 9. typical operating characteristics (for reference) vdd:5.0v, ta:25 ? c , c l =0pf unless otherwise noted 9.1 current consumption C operating temperature characteristics (vin/vout: vdd/2) figure 8.2 negat ive side o verload recovery time figure 9.1 current consumption vs. operating temperature
[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 7 - [ 9 . typ ical operating characteristics (for reference) continuation] 9. 2 current consumption C supply voltage characteristics (vin/vout: vdd/2) 9. 3 input offset C temperature characteristics (vin/vout: vdd/2) figure 9.2 current consumption vs. supply voltage figure 9.3 input offset vs. temperature
[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 8 - [ 9 . typ ical operating characteristics (for reference) continuation] 9.4 distribution of input offset drift (vdd:5v,vin/vout: vdd/2,ta: - 40 to 125oc) 9.5 distribution of input offset (vdd:5v,vin/vout: vdd/2,ta: - 40 to 125oc) 9.6 input bias current C temperature characteristics figure 9.4 input offset drift distribution figure 9.5 input offset distribution figure 9.6 input bias current vs. temperature
[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 9 - [ 9 . typ ical operating characteristics (for reference) continuation] 9.7 output voltage - load current characteristics 9.8 short circuit current C supply voltage characteristics 9.9 short circuit current C temperature characteristics figure 9.7 output volatge vs. load current figure 9.8 short curcuit current vs. supply voltage figure 9.9 short curcuit current vs. temperature
[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 10 - [ 9 . typ ical operating characteristics (for reference) continuation] 9.10 closed loop gain C frequency characteristics 9.11 open loop gain C frequency characteristics 9.12 input voltage noise C frequency characteristics figure 9.10 closed loop gain vs. frequency figure 9.11 open loop gain vs. frequency figure 9.12 input voltage noise vs. frequency
[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 11 - [ 9 . typ ical operating characteristics (for reference) continuation] 9.13 c mrr C frequency characteristics 9.14 psrr C frequency characteristics 9.15 output impedance C frequency characteristics figure 9.13 cmrr vs. frequency figure 9.14 psrr vs. frequency figure 9.15 output impedance vs. frequency
[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 12 - [ 9 . typ ical operating characteristics (for reference) continuation] 9.16 maximum output swing C frequency characteristics 9.17 thd + n oise C output amplitude 9.18 thd +noise C frequency characteristics figure 9.16 maximum output swing vs. frequency figure 9.17 thd +noise vs. output swing figure 9.18 thd +noise vs. frequency (v) 0.54 1
[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 13 - [ 9 . typ ical operating characteristics (for reference) continuation] 9.19 small signal step response (c l :0pf) 9.20 large signal step response (c l :0pf) 9.21 small output swing C frequency characteristics (c l :1000pf ,r l :10 ) 9.22 large signal step response (c l :1000pf ,r l :10 ) figure 9.19 large signal step response figure 9.21 small signal step response figure 9.19 small signal step response figure 9.22 large signal step response
[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 14 - [ 9 . typ ical operating characteristics (for reference) continuation] 9.23 over load recovery time 10. package 10.1 marking - msop8 figure 9.23 overload recovery time 9 ( 1 ) 1 p i n ( 2 ) p a r t n o . a k 2 9 7 5 : 2 9 7 5 ( 3 ) d a t e c o d e ( y e a r ) ( 4 ) d a t e c o d e ( w e e k ) ( 5 ) i n - h o u s e c o n t r o l c o d e 8 ( 3 ) ( 4 ) ( 5 ) ( 1 ) 7 6 5 1 2 3 4 y 7 5 a ( 2 ) w 2 w
[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 15 - 10.2 outline dimensions - msop8 package outline (unit: mm)
[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 16 - 11. ordering guide AK2975H - 40 ~ 125 o c 8 - pin msop
[ ak 2975 ] 014011069 - e - 00 2014/ 11 - 17 - important notice 0. asahi kasei microdevices corporation (akm) reserves the right to make changes to the information contained in this document without notice. when you consider any use or application of akm product stipulated in this document ( product ) , please make inquiries the sales office of akm or authorized distributor s as to current status of the products. 1. all information included in this document are provided only to illustrate the operation and application examples of akm products . akm neither makes warranties or representations with respect to the accuracy or completeness of the information contained in this document nor grants any license to any intellectual property rights or any other rights of akm or any third party with respect to the information in this document. you are fully responsible for use of such information contained in this document in your product design or applications . akm assumes no liability for any losses incur red by you or third parties arising from the use of such information in your product design or applications. 2. the product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or reliab ility and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious public impact , including but not limited to, equipment used in nuclear facilities, equipment used in the aerospace industry, medi cal equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electric power, and equipm ent used in finance - related fields. do not use product for the above use unless specifically agreed by akm in writing . 3. though akm works continually to improve the products quality and reliability, you are responsible for complying with safety standards and for providing adequate designs and safeguards for your hardware, software and systems which minimize risk and avoid situations in which a malfunction or failure of the product could cause loss of human life, bodily injury or damage to property, includ ing data loss or corruption. 4. do not use or otherwise make available the product or related technology or any information contained in this document for any military purposes, including without limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile technology products (mass destruction weapons). when exporting the p roducts or related technology or any information contained in this document, you should comply with the applicable exp ort control laws and regulations and follow the procedures required by such laws and regulations. the p roducts and related technology may not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any a pplicable domestic or foreign laws or regulations. 5. please contact akm sales representative for details as to environmental matters such as the rohs compatibility of the product. please use the product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the eu rohs directive. akm assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations. 6. res ale of the product with provisions different from the statement and/or technical features set forth in this document shall immediately void any warranty granted by akm for the product and shall not create or extend in any manner whatsoever , any liability o f akm. 7. this document may not be reproduced or duplicated, in any form, in whole or in part, without prior written consent of akm .

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