revisions no version approved the information disclosed herein was originated by and is the property of mazet. mazet reserves all patent, proprietary, design, use, sales, manufacturing an repr oduction rights thereto. product names used in this publication are for identification purposes only and may be trademark of their respective companies. 1 v 1.5 2003-07-07 approvals date mazet gmbh compiled: 2003-07-07 checked: 2003-07-07 status: valid mazet gmbh sales g?schwitzer stra?e 32 07745 jena / germany phone: +49 3641 2809-0 fax: +49 3641 2809-12 e-mail: sales@mazet.de url: http://www.mazet.de released: 2003-07-07 doc. no: db-99-072e page 1 of 10 data sheet MTI04BX / mti08bx multi-channel programmable gain transimpedance amplifier table of contents 1. general description 2 2. block diagram 2 3. description of interface 3 3.1 pinning 3 3.2 adjustment of transimpedance 3 4. description of function 3 5. electrical characteristics 3 5.1 absolute maximum ratings 3 5.2 operating conditions 4 5.3 ac/dc-characteristics 4 5.3.1 offset voltage at input inx 5 5.3.2 leakage current at input inx 6 5.3.3 dc-transfer-curves 7 6. packages 8 6.1 shape and dimensions 8 6.2 pin-configuration 8 7. applications 9 7.1 example for position measurement 9 7.2 connection of a colour sensor 9 8. ordering information 10 9. contact 10
revisions no version approved 1 v 1.5 2003-07-07 the information in this publication is believed to be accurate in all respects at the time of publication. mazet reserves the right to make changes in its products without notice in order to improve design or performance characteristics. doc. no: db-99-072e page 2 of 10 data sheet MTI04BX / mti08bx 1. general description the mti-devices are a family of integrated circuits of programmable gain transimpedance amplifiers with different numbers of channels (4 or 8). the mti-devices are mainly used for signal conditioning of sensors with current outputs . they are especially suitable for connection of photodiodes of array and row sensors . the possibility to adjust the transimpedance in 3 stages is a special feature. the adjustment is made by programming two pins and is valid for all channels together. the device packages are optimized for cob-mounting . 2. block diagram rf cc sw1 sw2 in1 vref out1 opamp 1 rf cc inx outx opamp x mti vdd gnd 50k 150k gnd
revisions no version approved 1 v 1.5 2003-07-07 the information in this publication is believed to be accurate in all respects at the time of publication. mazet reserves the right to make changes in its products without notice in order to improve design or performance characteristics. doc. no: db-99-072e page 3 of 10 data sheet MTI04BX / mti08bx 3. description of interface 3.1 pinning signal name typ. a/d a function vdd input a/d power supply gnd input a/d power supply sw1 input d input 1 for adjustment of transimpedance of mti- amplifier (pull down) sw2 input d input 2 for adjustment of transimpedance of mti- amplifier (pull down) inx input a analog current input of amplifier x outx output a analog voltage output of amplifier x a.) analog or digital 3.2 adjustment of transimped ance settings of digital inputs sw1 sw2 transimpedance rf gnd vdd 5m ? stage 1 vdd gnd 500k ? stage 2 gnd gnd 25k a ? stage 3 vdd vdd not used a.) default by pull down 4. description of function the mti-devices are programmable gain transimpedance amplifiers with different numbers of channels (mti04 ? 4 channels; mti08 ? 8 channels). there is one transimpedance amplifier per channel between a current input inx and a voltage output outx. its transimpedance is selectable in 3 stages. this adjustment can be effected by setting of digital inputs sw1 and sw2 and is valid for all channels simultaneously (headline 3.2). the inputs sw1 and sw2 are pulled down with a resistor for a default feedback resistor of 25k. the second input of all transimpedance amplifiers is used for a common supply by a reference voltage necessarily fed in through the pin vref. all channels are compensated for an external input capacitance of the photo-sensor of typical 20pf. the power supply for the mti-devices is typical 5v between vdd and gnd. 5. electrical characteristics 5.1 absolute maximum rating s violations of absolute maximum ratings are not allowed under any circumstances. all voltages are referenced to vss = 0v. parameter name min. max. unit power supply vdd 0,3 7,0 v input and output voltages ic-pinning 0,3 vdd 0,3 v power dissipation p op 0,1 w operating temperature t op 85 c storage temperature t stg 55 155 c
revisions no version approved 1 v 1.5 2003-07-07 the information in this publication is believed to be accurate in all respects at the time of publication. mazet reserves the right to make changes in its products without notice in order to improve design or performance characteristics. doc. no: db-99-072e page 4 of 10 data sheet MTI04BX / mti08bx 5.2 operating conditions all voltages are referenced to vss = 0v. parameter name min. typ. max. unit condition supply voltage vdd 4,5 5 5,5 v bias current mti04 i(vdd) 3 4 ma 27c bias current mti08 i(vdd) 12 16 ma 27c operating temperature t op ? 27 85 c input high level v ih 2,0 vdd+0,3 v input low level v il 0,3 0,8 v reference voltage vref 1 2,5 4 v 5.3 ac/dc-characteristics unless otherwise specified the data in this table is valid for t op = 27c and vdd = 5v. parameter name min. typ. max. unit condition 0,1 a stage 1 1astage 2 input current inx 20 a stage 3 4000 5000 6000 k stage 1 400 500 600 k stage 2 feedback resistor rf 20 25 30 k stage 3 25 khz stage 1 70 khz stage 2 signal frequency at input f 3db 500 khz stage 3 temperature coefficient of the feedback resistor tc rf 3500 ppm/k input offset voltage v off 8mvt op = 85c input leakage current i leak 500 pa t op = 85c capacitive load at outx c load 50 pf i load = 0,5ma pull down resistor at sw1 and sw2 r pdsw 50 k input capacitance of external connected photo- sensors c diode 20 pf per input
revisions no version approved 1 v 1.5 2003-07-07 the information in this publication is believed to be accurate in all respects at the time of publication. mazet reserves the right to make changes in its products without notice in order to improve design or performance characteristics. doc. no: db-99-072e page 5 of 10 data sheet MTI04BX / mti08bx 5.3.1 offset voltage at input inx offset voltage voff = f(vref) -- temp = 0c 0 1 2 3 4 5 6 7 8 0123456 vref -- v voff -- mv vdd = 4.5v vdd = 5.0v vdd = 5.5v offset voltage voff = f(vref) -- temp = 27c 0 1 2 3 4 5 6 7 8 0123456 vref -- v voff -- mv vdd = 4.5v vdd = 5.0v vdd = 5.5v offset voltage voff = f(vref) -- temp = 85c 0 1 2 3 4 5 6 7 8 0123456 vref -- v voff -- mv vdd = 4.5v vdd = 5.0v vdd = 5.5v
revisions no version approved 1 v 1.5 2003-07-07 the information in this publication is believed to be accurate in all respects at the time of publication. mazet reserves the right to make changes in its products without notice in order to improve design or performance characteristics. doc. no: db-99-072e page 6 of 10 data sheet MTI04BX / mti08bx 5.3.2 leakage current at input i nx leakage current ileak = f(vref) -- temp = 0c -50 -25 0 25 50 0246 vref -- v ileak -- pa vdd = 4.5v vdd = 5.0v vdd = 5.5v leakage current ileak = f(vref) -- temp = 27c -50 -25 0 25 50 0246 vref -- v ileak -- pa vdd = 4.5v vdd = 5.0v vdd = 5.5v leakage current ileak = f(vref) -- temp = 85c -100 0 100 200 300 400 500 0246 vref -- v ileak -- pa vdd = 4.5v vdd = 5.0v vdd = 5.5v
revisions no version approved 1 v 1.5 2003-07-07 the information in this publication is believed to be accurate in all respects at the time of publication. mazet reserves the right to make changes in its products without notice in order to improve design or performance characteristics. doc. no: db-99-072e page 7 of 10 data sheet MTI04BX / mti08bx 5.3.3 dc-transfer-curves dc-transfer-curve v(outx) = f(i(inx)) -- rf = 25kohms -1 0 1 2 3 4 5 6 -60 -40 -20 0 20 40 60 i(inx) -- a v(outx) -- v vref = 1.0v temp = 0c vref = 2.5v temp = 0c vref = 4.0v temp = 0c vref = 1.0v temp = 27c vref = 2.5v temp = 27c vref = 4.0v temp = 27c vref = 1.0v temp = 85c vref = 2.5v temp = 85c vref = 4.0v temp = 85c dc-transfer-curve v(outx) = f(i(inx)) -- rf = 500kohms -1 0 1 2 3 4 5 6 -3 -2 -1 0 1 2 3 i(inx) -- a v(outx) -- v vref = 1.0v temp = 0c vref = 2.5v temp = 0c vref = 4.0v temp = 0c vref = 1.0v temp = 27c vref = 2.5v temp = 27c vref = 4.0v temp = 27c vref = 1.0v temp = 85c vref = 2.5v temp = 85c vref = 4.0v temp = 85c dc-transfer-curve v(outx) = f(i(inx)) -- rf = 5mohms -1 0 1 2 3 4 5 6 -300 -200 -100 0 100 200 300 i(inx) -- na v(outx) -- v vref = 1.0v temp = 0c vref = 2.5v temp = 0c vref = 4.0v temp = 0c vref = 1.0v temp = 27c vref = 2.5v temp = 27c vref = 4.0v temp = 27c vref = 1.0v temp = 85c vref = 2.5v temp = 85c vref = 4.0v temp = 85c
revisions no version approved 1 v 1.5 2003-07-07 the information in this publication is believed to be accurate in all respects at the time of publication. mazet reserves the right to make changes in its products without notice in order to improve design or performance characteristics. doc. no: db-99-072e page 8 of 10 data sheet MTI04BX / mti08bx 6. packages 6.1 shape and dimensions pin 1 d a 1 a e b w l e h dimensions ? mm typ package d e h a a1 e b l w mti04bs sop16 9,90 3,80 6,00 1,75 0,15 1,27 0,41 0,72 4 mti04bq qsop16 4,90 3,80 6,00 1,75 0,15 0,635 0,38 0,72 4 mti08bs 1 sop28l 17,90 7,49 10,31 2,54 0,20 1,27 0,41 0,76 4 mti08bq 1 qsop28l 9,9 3,8 6,0 1,75 0,15 0,635 0,38 0,72 4 6.2 pin-configuration vref sw1 gnd in1 in2 in3 in4 nc nc = no connect 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 sw2 vdd nc out1 out2 out3 out4 nc MTI04BX top view (not to scale) sop16 qsop16 rf = f(sw1, sw2) 1 2 3 4 5 6 7 8 28 27 26 25 24 23 22 21 vref sw1 gnd in1 in2 in3 in4 in5 sw2 vdd nc out1 out2 out3 out4 out5 9 20 in6 out6 10 19 11 18 12 17 in7 in8 nc out7 out8 nc 13 16 nc nc 14 15 nc nc mti08bx 1 top view (not to scale) sop28 qsop28 rf = f(sw1, sw2) 1 only customised available tapered edge 1) 1) as shown in the figure pin 1 is located on the bottom of the left corner of the outline.
revisions no version approved 1 v 1.5 2003-07-07 the information in this publication is believed to be accurate in all respects at the time of publication. mazet reserves the right to make changes in its products without notice in order to improve design or performance characteristics. doc. no: db-99-072e page 9 of 10 data sheet MTI04BX / mti08bx 7. applications 7.1 example for position mea surement rf photo sensor row mti08 transimpedance amplifier photo current output voltage a/d-converter logic for signal processing moving aperture light source data stream 7.2 connection of a colour se nsor 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 mti04 v(outx) 10 k 15 k s1 s2 5v 1 2 3 4 8 7 6 5 mcs3 colour sensor
revisions no version approved 1 v 1.5 2003-07-07 the information in this publication is believed to be accurate in all respects at the time of publication. mazet reserves the right to make changes in its products without notice in order to improve design or performance characteristics. doc. no: db-99-072e page 10 of 10 data sheet MTI04BX / mti08bx 8. ordering information name of product package number of channels mti04bs sop16 4 mti04bq qsop16 4 mti08bs 2 sop28 8 mti08bq 2 qsop28 8 9. contact for further information, please feel free to contact: mazet gmbh sales office: frank krumbein g?schwitzer stra?e 32 07745 jena germany phone: +49 3641 2809-0 fax: +49 3641 2809-12 e-mail: krumbein@mazet.de url: http://www.mazet.de 2 only customised available
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