MTI08BS

DATA-SHEET MTI04Bx / MTI08Bx MULTI-CHANNEL PROGRAMMABLE GAIN TRANSIMPEDANCE AMPLIFIER Contents 1. GENERAL DESCRIPTION 2. BLOCK DIAGRAM 3. DESCRIPTION OF INTERFACE 3.1 Pinning 3.2 Adjustment of Transimpedance 4. DESCRIPTION OF FUNCTION 5. ELECTRICAL CHARACTERISTICS 5.1 Absolute Maximum Ratings 5.2 Operating Conditions 5.3 AC/DC-Characteristics 5.3.1 Offset Voltage At Input INX 5.3.2 Leakage Current At Input INX 5.3.3 DC-Transfer-Curves 2 2 3 3 3 3 3 3 4 4 5 6 7 6. PACKAGES 6.1 Shape and Dimensions 6.2 Pin-Configuration 7. APPLICATIONS 7.1 Example for Position Measurement 7.2 Connection of A Colour Sensor 8. ORDERING INFORMATION 9. CONTACT 8 8 8 9 9 9 10 10 Distributor: Laser Components Instrument Group, Wilmington MA, Phone: 978 658 9100, www.laser-components.com The information disclosed herein was originated by and is the property of MAZeT. MAZeT reserves all patent, proprietary, design, use, sales, manufacturing an reproduction rights thereto. Product names used in this publication are for identification purposes only and may be trademark of their respective companies. REVISIONS NO 1 VERSION V 1.4 APPROVED 2001-08-27 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 VDD GND SW1 SW2 Cc Rf 50kΩ − 150kΩ IN1 OPAMP 1 VREF GND OUT1 Cc Rf INX OPAMP X OUTX MTI Sheet 2 of 10 Distributor: Laser Components Instrument Group, Wilmington MA, Phone: 978 658 9100, www.laser-components.com 3. DESCRIPTION OF INTERFACE 3.1 Pinning signal name VDD GND SW1 SW2 INX OUTX a.) analog or digital Typ. input input input input input output a/da a/d a/d d d a a function power supply (+) power supply (−) input 1 for adjustment of transimpedance of MTIamplifier (pull down) input 2 for adjustment of transimpedance of MTIamplifier (pull down) analog current input of amplifier X analog voltage output of amplifier X 3.2 Adjustment Of Transimpedance settings of digital inputs SW1 SW2 GND VDD GND VDD a.) default by pull down transimpedance Rf 5MΩ – stage 1 500kΩ – stage 2 25kΩa – stage 3 not used VDD GND GND VDD 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 25kΩ. 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 Ratings Violations of absolute maximum ratings are not allowed under any circumstances. All voltages are referenced to VSS = 0V. parameter power supply input and output voltages power dissipation operating temperature storage temperature name VDD ⇒ IC-pinning POP TOP TSTG min. −0,3 −0,3 0 −55 max. 7,0 VDD + 0,3 0,1 85 155 unit V V W °C °C Sheet 3 of 10 Distributor: Laser Components Instrument Group, Wilmington MA, Phone: 978 658 9100, www.laser-components.com 5.2 Operating Conditions All voltages are referenced to VSS = 0V. parameter supply voltage Bias current MTI04 Bias current MTI08 operating temperature input high level input low level reference voltage name VDD I(VDD) I(VDD) TOP VIH VIL VREF min. 4,5 3 12 0 2,0 −0,3 1 typ. 5 max. 5,5 4 16 85 VDD+0,3 0,8 4 unit V mA mA °C V V V condition 27°C 27°C 27 2,5 5.3 AC/DC-Characteristics Unless otherwise specified the data in this table is valid for TOP = 27°C and VDD = 5V. parameter input current feedback resistor name INX Rf min. typ. 0,1 1 20 5000 500 25 25 70 500 −3500 max. unit µA µA µA kΩ kΩ kΩ kHz kHz kHz ppm/K mV pA pF nV/√Hz pA/√ Hz kΩ pF condition stage 1 stage 2 stage 3 stage 1 stage 2 stage 3 stage 1 stage 2 stage 3 TOP = 85°C TOP = 85°C ILOAD = 0,5mA f = 1kHz f = 1kHz 4000 400 20 6000 600 30 signal frequency at input temperature coefficient of the feedback resistor input offset voltage input leakage current capacitive load at OUTX output voltage noise equivalent input current noise pull down resistor at SW1 and SW2 input capacitance of external connected photosensors f3dB TCRf VOFF ILEAK CLOAD VNOISE INOISE RPDSW CDIODE 50 8 500 50 tbd tbd 20 per input Sheet 4 of 10 Distributor: Laser Components Instrument Group, Wilmington MA, Phone: 978 658 9100, www.laser-components.com 5.3.1 Offset Voltage At Input INX Offset Voltage Voff = f(VREF) -- Temp = 0°C 8 7 6 Voff -- mV 5 4 3 2 1 0 0 1 2 3 VREF -- V 4 5 6 VDD = 4.5V VDD = 5.0V VDD = 5.5V Offset Voltage Voff = f(VREF) -- Temp = 27°C 8 7 6 Voff -- mV 5 4 3 2 1 0 0 1 2 3 VREF -- V 4 5 6 VDD = 4.5V VDD = 5.0V VDD = 5.5V Offset Voltage Voff = f(VREF) -- Temp = 85°C 8 7 6 Voff -- mV 5 4 3 2 1 0 0 1 2 3 VREF -- V 4 5 6 VDD = 4.5V VDD = 5.0V VDD = 5.5V Sheet 5 of 10 Distributor: Laser Components Instrument Group, Wilmington MA, Phone: 978 658 9100, www.laser-components.com 5.3.2 Leakage Current At Input INX Leakage Current Ileak = f(VREF) -- Temp = 0°C 50 25 Ileak -- pA 0 -25 -50 0 2 VREF -- V 4 6 VDD = 4.5V VDD = 5.0V VDD = 5.5V Leakage Current Ileak = f(VREF) -- Temp = 27°C 50 25 Ileak -- pA 0 -25 -50 0 2 VREF -- V 4 6 VDD = 4.5V VDD = 5.0V VDD = 5.5V Leakage Current Ileak = f(VREF) -- Temp = 85°C 500 400 Ileak -- pA 300 200 100 0 -100 0 2 VREF -- V 4 6 VDD = 4.5V VDD = 5.0V VDD = 5.5V Sheet 6 of 10 Distributor: Laser Components Instrument Group, Wilmington MA, Phone: 978 658 9100, www.laser-components.com 5.3.3 DC-Transfer-Curves DC-Transfer-Curve V(OUTX) = f(I(INX)) -- Rf = 25kOhms 6 5 V(OUTX) -- V 4 3 2 1 0 -1 -60 -40 -20 0 I(INX) -- µA 20 40 60 VREF = 1.0V Temp = 0°C VREF = 2.5V Temp = 0°C VREF = 4.0V Temp = 0°C VREF = 1.0V Temp = 27°C VREF = 2.5V Temp = 27°C VREF = 4.0V Temp = 27°C VREF = 1.0V Temp = 85°C VREF = 2.5V Temp = 85°C VREF = 4.0V Temp = 85°C DC-Transfer-Curve V(OUTX) = f(I(INX)) -- Rf = 500kOhms 6 5 V(OUTX) -- V 4 3 2 1 0 -1 -3 -2 -1 0 I(INX) -- µA 1 2 3 VREF = 1.0V Temp = 0°C VREF = 2.5V Temp = 0°C VREF = 4.0V Temp = 0°C VREF = 1.0V Temp = 27°C VREF = 2.5V Temp = 27°C VREF = 4.0V Temp = 27°C VREF = 1.0V Temp = 85°C VREF = 2.5V Temp = 85°C VREF = 4.0V Temp = 85°C DC-Transfer-Curve V(OUTX) = f(I(INX)) -- Rf = 5MOhms 6 5 V(OUTX) -- V 4 3 2 1 0 -1 -300 -200 -100 0 100 200 300 VREF = 1.0V Temp = 0°C VREF = 2.5V Temp = 0°C VREF = 4.0V Temp = 0°C VREF = 1.0V Temp = 27°C VREF = 2.5V Temp = 27°C VREF = 4.0V Temp = 27°C VREF = 1.0V Temp = 85°C VREF = 2.5V Temp = 85°C VREF = 4.0V Temp = 85°C I(INX) -- nA Sheet 7 of 10 Distributor: Laser Components Instrument Group, Wilmington MA, Phone: 978 658 9100, www.laser-components.com 6. PACKAGES 6.1 Shape and Dimensions tapered edge 1 A 1) A L w e D b E H 1) As shown in the figure PIN 1 is located on the bottom of the left corner of the outline. PIN 1 dimensions – mm TYP MTI04BS MTI04BQ MTI08BS MTI08BQ PACKAGE SOP16 QSOP16 SOP28L QSOP28L D 9,90 4,90 17,90 9,9 E 3,80 3,80 7,49 3,8 H 6,00 6,00 10,31 6,0 A 1,75 1,75 2,54 1,75 A1 0,15 0,15 0,20 0,15 e 1,27 0,635 1,27 0,635 b 0,41 0,38 0,41 0,38 L 0,72 0,72 0,76 0,72 w 4° 4° 4° 4° 6.2 Pin-Configuration VREF SW1 GND IN1 IN2 IN3 IN4 NC SW2 VDD NC OUT1 OUT2 OUT3 OUT4 NC VREF SW1 GND IN1 IN2 IN3 IN4 IN5 IN6 IN7 IN8 NC NC NC SW2 VDD NC OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 NC NC NC 1 2 3 4 5 6 7 8 Rf = f(SW1, SW2) 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Rf = f(SW1, SW2) 28 27 26 25 24 23 22 21 20 19 18 17 16 15 MTI04Bx TOP VIEW (not to scale) MTI08Bx TOP VIEW (not to scale) SOP16 QSOP16 SOP28 QSOP28 NC = NO CONNECT Sheet 8 of 10 Distributor: Laser Components Instrument Group, Wilmington MA, Phone: 978 658 9100, www.laser-components.com 7. APPLICATIONS 7.1 Example For Position Measurement LIGHT SOURCE MOVING APERTURE PHOTO SENSOR ROW PHOTO CURRENT Rf OUTPUT VOLTAGE A/D-CONVERTER MTI08 transimpedance amplifier DATA STREAM LOGIC FOR SIGNAL PROCESSING 7.2 Connection Of A Colour Sensor 5V Ω 10 k Ω 15 k 1 S1 2 3 4 5 6 7 8 MTI04 16 15 14 13 12 11 10 9 S2 V(OUTX) 1 2 3 4 MCS3 8 7 6 colour sensor 5 Sheet 9 of 10 Distributor: Laser Components Instrument Group, Wilmington MA, Phone: 978 658 9100, www.laser-components.com 8. ORDERING INFORMATION NAME OF PRODUCT MTI04BS MTI04BQ MTI08BS MTI08BQ PACKAGE SOP16 QSOP16 SOP28 QSOP28 NUMBER OF CHANNELS 4 4 8 8 9. CONTACT For further information, please feel free to contact: LASER COMPONENTS GmbH Werner-von-Siemens-Str. 15 D-82140 Olching / Germany Telefon + 4 9 (0) 81 42 / 28 64 0 Telefax + 4 9 (0) 81 42 / 28 64 11 E-Mail: info@lasercomponents.com www.lasercomponents.com LASER COMPONENTS Instrument Group, Inc. 10 Upton Drive USA 01887 Wilmington, MA Phone: +1 978 6589 100 Fax: +1 978 6581 888 E-Mail: erenfer@laser-components.com www.laser-components.com Sheet 10 of 10 Distributor: Laser Components Instrument Group, Wilmington MA, Phone: 978 658 9100, www.laser-components.com Issue: 04/02 / V2 / pdf / mazet / mti04bx.pdf