ICOM-ICL7109维修手册

AXL12 Bit A/D Converter With3-State Binary OutputsGeneral DescriptionFeaturesThe ICL7109 is a monolithic 12 bit A/D converterImproved 2nd Source!(See 3rd page fordesigned for easy interface with microprocessors"Maxim Advantage").and UARTs.The 12 bit binary plus polarity and over-range outputs can be directly interfaced to a micro-Zero Integrator Phase for Fast Overloadprocessor bus.In this mode the ICL7109 is controlledby the microprocessor through the chip select andRecovery7109two byte enable inputs.For remote data loggingapplications the ICL7109 outputs are easily converted◆Hysteresis and“Crosstalk"Eliminatedto a UART handshake mode,working with industrystandard UARTs to provide serial data transmission.Enhanced Bus Driving CapabilityThis device offers high accuracy by lowering rollovererror to less than 1 count and zero reading drift toByte Organized Three-state Outputsless than 1 V/C.In many data acquisition systemsUART Handshake Mode for Serial Interfacingthe ICL7109 is an attractive.low cost.one-per-channel alternative to analog multiplexing due toits low power consumption and input bias current.True Differential Input and ReferenceMaxim has added a zero-integrator phase to theUp to 30 Conversions per SecondICL7109,eliminating overrange hangover,"crosstalk'and hysteresis effects.Maxim has also increased theSignificantly Improved ESD Protectioncurrent sourcing capabilities of the ICL7109.enablingit to rapidly drive the large capacitances often foundMonolithic,Low Power CMOS Designon microprocessor busses.ApplicationsOrdering InformationThis device is used in a wide range of data acquisitionPARTTEMP RANGEPACKAGEand control applications.Most applications involvethe measurement of anaiog data:ICL7109MJL -55"C to +125C 40 Lead CERDIPPressureSpeedVoltageICL71091JL-20C to +85C 40 Lead CERDIPResistanceFlowWeightICL7109CPL 0'C to +70'C 40 Lead Plastic DIPTemperaturePowerCurrentICL7109CQH O'C to +70'C 44 Lead Plastic Chip Carrier1CL7109C/D0℃to+70℃DiceTypical Operating CircuitPin ConfigurationTop View40 Lead DIP153REF CAP.CONTBOL BUSREF CAP+OUTPUTSDATA USNLOBD-BT2MernPOL OFORDER4SEND18UN HOLDBUF OSC OUTNOSC SELn OSC OUT2205ewINPUTS I CULOAD 30,1缺o空复00DIRECT NTERFACESee Last Page for 44 Lead Chip Carrier Pin Configurationed gualty level.At no addit nal cos we offer a second-ource a大ce that is subrect to e followin乎9 uaranfeeVAXIMMaxim Integrated Products 1Call toll free 1-800-998-8800 for free samples or literature.