Part # AD654 datasheet

Part Manufacturer: Analog Devices

Analog Devices

Part Description: AD654 Data Sheet

Part Details:

a Low Cost Monolithic Voltage-to-Frequency Converter AD654 FEATURES FUNCTIONAL BLOCK DIAGRAM Low CostSingle or Dual Supply, 5 V to 36 V, 5 V to 18 V +VS CT CT ­VS Full-Scale Frequency Up to 500 kHz 8 7 6 5 Minimum Number of External Components NeededVersatile Input Amplifier Positive or Negative Voltage Modes DRIVER OSC Negative Current ModeHigh Input Impedance, Low Drift AD654 Low Power: 2.0 mA Quiescent CurrentLow Offset: 1 mV 1 2 3 4 F LOGIC +V OUT RT IN COMMON PRODUCT DESCRIPTION 2. A minimum number of low cost external components are The AD654 is a monolithic V/F converter consisting of an input necessary. A single RC network is all that is required to set amplifier, a precision oscillator system, and a high current output up any full scale frequency up to 500 kHz and any full-scale stage. A single RC network is all that is required to set up any input voltage up to ± 30 V. full scale (FS) frequency up to 500 kHz and any FS input voltage 3. Plastic packaging allows low cost implementation of the up to ± 30 V. Linearity error is only 0.03% for a 250 kHz FS, standard VFC applications: A/D conversion, isolated signal and operation is guaranteed over an 80 dB dynamic range. The transmission, F/V conversion, phase-locked loops, and tuning overall temperature coefficient (excluding the effects of external switched-capacitor filters. components) is typically ± 50 ppm/°C. The AD654 operates froma single supply of 5 V to 36 V and consumes only 2.0 mA quies- 4. Power supply requirements are minimal; only 2.0 mA of cent current. quiescent current is drawn from the single positive supplyfrom 4.5 volts to 36 volts. In this mode, positive inputs can The low drift (4 µV/°C typ) input amplifier allows operation

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AD654.pdf Datasheet