Transcription of a Voltage-to-Frequency Converter 3 V/5 V Low …
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a Voltage-to-Frequency Converter 3 V/5 V Low …
FUNCTIONAL BLOCK *FEATURESS ynchronous OperationFull-Scale frequency Set by External System Clock 8-Lead SOT-23 and 8-Lead MSOP Packages3 V or 5 V OperationLow Power: 3 mW (Typ)Nominal Input Range: 0 to VREFTrue 150 mV Capability Without Charge Pump VREF Range: V to VDDI nternal V Reference1 MHz Max Input FrequencySelectable High Impedance Buffered Input Minimal External Components RequiredAPPLICATIONSI solation of High Common-Mode VoltagesLow-Cost Analog-to-Digital ConversionBattery MonitoringAutomotive SensingGENERAL DESCRIPTIONThe AD7740 is a low-cost, ultrasmall synchronous Voltage-to-Frequency Converter (VFC). It works from a single V to V or V to V supply consuming mA. The AD7740 is available in an 8-lead SOT-23 and also in an 8-lead MSOP package. Small package, low cost and ease of use were majordesign goals for this product.
AD7740 SPECIFICATIONS K, Y Versions1 Parameter2 Min Typ Max Unit Test Conditions/Comments DC PERFORMANCE Integral Nonlinearity CLKIN = 32 kHz3 ±0.012 % of Span4 Unbuffered Mode, External Clock at CLKIN CLKIN = 1 MHz ±0.012 % of Span Unbuffered Mode, Crystal at CLKIN
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