ICL7106/7107LEAVAILABICL7106/ICL710731 2 Digit A/D ConvertersGeneral DescriptionThe Maxim ICL7106/ICL7107 are monolithic analog-todigital converters (ADCs). They have very high inputimpedances and require no external display drive circuitry. On-board active components include polarity anddigit drivers, segment decoders, voltage reference anda clock circuit. The ICL7106 will directly drive a nonmultiplexed liquid crystal display (LCD), whereas the ICL7107will directly drive a common anode light emitting diode(LED) display.Versatility and accuracy are inherent features of theseconverters. The dual-slope conversion technique automatically rejects interference signals common in industrial environments. The true differential input and referenceare particularly useful when making ratiometric measurements (ohms or bridge transducers). Maxim has addeda zero-integrator phase to the ICL7106 and ICL7107,eliminating overrange hangover and hysteresis effects.Finally, these devices offer high accuracy by loweringrollover error to less than one count and zero readingdrift to less than 1FV/NC.These devices are used in a wide range of digital panelmeter applications. Most applications, however, involvethe measurement and display of analog data.PressureApplicationsFunctional ceCurrentFeaturesS Improved 2nd Source (see Page 3 for “MaximAdvantage”)S Guaranteed First Reading Recovery fromOverrangeS On-Board Display Drive Capability—No ExternalCircuitry RequiredLCD—ICL7106LED—ICL7107S High-Impedance CMOS Differential InputsS Low Noise ( 15µVP-P) without Hysteresis orOverrange HangoverS Clock and Reference On-ChipS True Differential Reference and InputS True Polarity Indication for Precision NullApplicationsS Monolithic CMOS DesignOrder InformationPARTTEMP RANGEPIN-PACKAGEICL7106CPL 0 C to 70 C40 PDIPICL7106CQH 0 C to 70 C44 PLCCICL7107CPL 0 C to 70 C40 PDIPICL7107CQH 0 C to 70 C44 PLCC Denotes a lead(Pb)-free/RoHS-compliant package.MaterialThicknessPin ConfigurationsTypical Operating Circuit LCD DISPLAYANALOGINPUTICL71069VVREFFULL-SCALE INPUT VREFTO ANALOGPDIPPin 2.000VConfigurations1.000Vappear at end of data sheet. COMMON (P32)100.0mV200.0mVFunctional Diagrams continued at end of data sheet.Pin Configurations continued at end of data sheetUCSP is a trademark of Maxim Integrated Products, Inc.The "Maxim Advantage" signifies an upgraded quality level. At no additional cost we offer a second-source device that is subject tothe following: guaranteed performance over temperature along with tighter test specifications on many key parameters; and deviceenhancement, when needed, that result in improved performance without changing the functionality.For pricing, delivery, and ordering information, please contact Maxim DirectForpricing, delivery,and orderingplease contact Maxim Directat1-888-629-4642,or visitMaxim’s information,website at 1-888-629-4642, or visit Maxim’s website at; Rev 1; 1/12

ICL7106/ICL710731 2 Digit A/D ConvertersABSOLUTE MAXIMUM RATINGSSupply VoltageICL7106, V to V-.15VICL7107, V to GND. 6VICL7107, V- to GND.-9VAnalog Input Voltage (either input) (Note 1). V to VReference Input Voltage (either input).V to VClock InputICL7106.TEST to V ICL7107. GND to V Continuous Power Dissipation (TA 70NC)(Note 2)PDIP (derate 16.7mW/NC above 70NC).1333.3mWPLCC (derate 13.3mW/NC above 70NC).1066.7mWOperating Temperature Range. 0NC to 70NCStorage Temperature Range. -55NC to 160NCLead Temperature (soldering, 10s). 300NCSoldering Temperature (reflow)PDIP. 260NCPLCC. 245NCNote 1: Input voltages may exceed the supply voltages, provided the input current is limited to 100µA.Note 2: Dissipation rating assumes device is mounted with all leads soldered to the PCB.Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functionaloperation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolutemaximum rating conditions for extended periods may affect device reliability.ELECTRICAL CHARACTERISTICS(Note 3)PARAMETERCONDITIONSZero Input ReadingVIN 0V, full scale 200.0mVRatiometric ReadingVIN VREF, VREF 100mVMINTYPMAXUNITS-000.0000.0 000.0DigitalReading999999/1000 1000DigitalReadingRollover Error (Difference in Reading forEqual Positive and Negative Reading Near -VIN VIN 200.0mVFull Scale)-1Q2 1CountsLinearity (Maximum Deviation from BestStraight Line Fit)Full scale 200mV or full scale 2.000V-1Q2 1CountsCommon-Mode Rejection Ratio (Note 4)VCM Q1V, VIN 0V, full scale 200.0mV50FV/VNoise (Pk-Pk Value Not Exceeded95% of Time)VIN 0V, full scale 200mV15FVInput Leakage CurrentVIN 0V110pA0.21FV/NC15ppm/NCV Supply Current (Does Not Include LEDVIN 0VCurrent for ICL7107)0.81.8mAV- Supply Current (ICL7107 Only)0.61.8mA2.83.2VZero Reading DriftVIN 0V, 0NC TA 70NCScale Factor Temperature CoefficientVIN 199.0mV, 0NC TA 70NC(external reference 0ppm/NC)Analog Common Voltage(With Respect to Positive Supply)25kI between common and positive supplyTemperature Coefficient of Analog25kI between common and positive supplyCommon (With Respect to Positive Supply)2.480ppm/NCThe electrical characteristics above are a reproduction of a portion of Intersil's copyrighted (1983/1984) data book. This informationdoes not constitute any representation by Maxim that Intersil's products will perform in accordance with these specifications. The"Electrical Characteristics table" along with the descriptive excerpts from the original manufacturer's data sheet have been includedin this data sheet solely for comparative purposes.2Maxim Integrated

ICL7106/ICL710731 2 Digit A/D ConvertersELECTRICAL CHARACTERISTICS (continued)(Note 3)PARAMETERICL7106 OnlyPk-Pk Segment Drive Voltage,Pk-Pk Backplane Drive Voltage (Note 5)ICL7107 OnlySegment Sinking CurrentCONDITIONSMINTYPMAXUNITSV to V- 9V456V(Except pin 19) V 5.0V, segment voltage 3V58.0Pin 19 only1016mANote 3: Unless otherwise noted, specifications apply to both the ICL7106 and ICL7107 at TA 25NC, fCLOCK 48kHz. ICL7106is tested in the circuit of Figure 1. ICL7107 is tested in the circuit of Figure 2.Note 4: See the Differential Input section.Note 5: Backplane drive is in phase with segment drive for “off” segment, 180N out of phase for “on” segment. Frequency is 20times the conversion rate. Average DC component is less than 50mV.Maxim Integrated3

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ICL7106/ICL7107ICL7106/710731 2 Digit A/D ConvertersTypical Applications12Maxim IntegratedMaxim Integrated11

ICL7106/ICL710731 2 Digit A/D ConvertersPin Configurations (continued)Chip InformationPROCESS: BiCMOSPackage InformationFor the latest package outline information and land patterns(footprints), go to Notethat a “ ”, “#”, or “-” in the package code indicates RoHS statusonly. Package drawings may show a different suffix character, butthe drawing pertains to the package regardless of RoHS status.PLCCPACKAGETYPEPACKAGECODEDOCUMENT LAND PATTERNNO.No.40 PDIPP40 121-0044—44 PLCCQ44 121-004990-0236Maxim IntegratedMaxim Integrated13

ICL7106/ICL710731 2 Digit A/D ConvertersRevision HistoryREVISIONNUMBERREVISIONDATE010/84Initial release11/12Removed CERDIP options.DESCRIPTIONPAGESCHANGED—1, 2, 4, 12Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patentlicenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min andmax limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.14 Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-10002012 Maxim Integrated Products, Inc. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.