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HT82V46 Datasheet(PDF) 1 Page - Holtek Semiconductor Inc |
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HT82V46 Datasheet(HTML) 1 Page - Holtek Semiconductor Inc |
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1 / 27 page  Rev. 1.10 1 November 24, 2011 Rev. 1.00 PB November 25, 2011 HT82V46 16-Bit, 45MSPS, 3-Channel CCD/CIS Analog Signal Processor Features • Operatingvoltage:3.3V • Guaranteedwon’tmisscodes • 9-bitprogrammablegain • CorrelatedDoubleSampling • 8-bitprogrammableoffset • Programmableclampvoltage • 8-bitwidemultiplexeddataoutputformat • 8-bitonlyoutputmode • 4-bitmultiplexednibblemode • Internalvoltagereference • Programmable4-wireserialinterface • MaximumConversationrateupto45MSPS • 28-pinSSOPpackage Applications • Flatbeddocumentscanners • Filmscanners • Digitalcolorcopiers • Multifunctionperipherals General Description TheHT82V46isacompleteanalogsignalprocessor forCCDimagingapplications.Itfeaturesa3-channel architecturedesignedtosampleandconditionthe outputsoftri-linearcolorCCDarrays.Eachchannel consists of an input clamp, Correlated Double Sampler(CDS),offsetDACandProgrammableGain Amplifier(PGA),andahighperformance16-bitA/ Dconverter.TheCDSamplifiersmaybedisabledfor usewithsensorssuchasContactImageSensors(CIS) andCMOSactivepixelsensors,whichdonotrequire CDS.The16-bitdigitaloutputisavailablein8-bit widemultiplexedformat.Theinternalregistersare programmedthrougha4-wireserialinterface,which providesgain,offsetandoperatingmodeadjustments. TheHT82V46operatesfromasingle3.3Vpower supply,typicallyconsumes528mWofpower. Block Diagram SCK REFB REFT DVSS AVSS AVSS ADCK CDS2 CDS1 16-bit ADC 16:8:4 MUX 16 8 SEN SDI OD[0:6] OEB VINR AVDD CML DVDD VING VINB VRLC/VBIAS DVDD OD[7]/SDO CDS Bandgap Reference RLC RLC RLC Timing Control C1S C2S CLP CDS CDS 3:1 MUX 8 9 4 9 4 PGA PGA PGA + + + DAC Offset DAC Offset DAC Offset RLC DAC Serial Control Interface PGA REG Offset REG Setup REG1 ~ REG6 Green Blue Red Green Blue Red + + + 2 |
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