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AD654

Features: Low CostSingle or Dual Supply, 5 V to 36 V, 65 V to 618 VFull-Scale Frequency Up to 500 kHzMinimum Number of External Components NeededVersatile Input AmplifierPositive or Negative Voltage ModesNegative Current ModeHigh Input Impedance, Low DriftLow Power: 2.0 mA Quiescent CurrentLow Off...

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SeekIC No. : 004269696 Detail

AD654: Features: Low CostSingle or Dual Supply, 5 V to 36 V, 65 V to 618 VFull-Scale Frequency Up to 500 kHzMinimum Number of External Components NeededVersatile Input AmplifierPositive or Negative Voltage...

AD654 Data Sheet

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Part Number:
AD654
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

Low Cost
Single or Dual Supply, 5 V to 36 V, 65 V to 618 V
Full-Scale Frequency Up to 500 kHz
Minimum Number of External Components Needed
Versatile Input Amplifier
Positive or Negative Voltage Modes
Negative Current Mode
High Input Impedance, Low Drift
Low Power: 2.0 mA Quiescent Current
Low Offset: 1 mV




Pinout

AD654 Diagram




Specifications

Total Supply Voltage +VS to VS . . . . . . . . . . . . . . . . . . .36 V
Maximum Input Voltage
(Pins 3, 4) to VS . . . . . . . . . . . . . . . . . . . . 300 mV to +VS
Maximum Output Current
Instantaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 mA
Sustained . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 mA
Logic Common to VS . . . . . . . . . . . . . . . 500 mV to (+VS 4)
Storage Temperature Range . . . . . . . . . . . . 65°C to +150°C

Architecture Non-Synchronous
# Channels 1-Single Ended
Input Voltage Range (V) ±14V
Full Scale Fout (kHz) 500kHz
Accuracy (%/kHz) 0.4
Voltage Supply (V) +/- 5 to +/- 18
Supply Current 2.5mA
Package 8-Lead PDIP,8-Lead SOIC





Description

The AD654 is a monolithic V/F converter consisting of an input amplifier, a precision oscillator system, and a high current output stage. A single RC network is all that is required to set up any full scale (FS) frequency up to 500 kHz and any FS input voltage up to ± 30 V. Linearity error is only 0.03% for a 250 kHz FS, and operation is guaranteed over an 80 dB dynamic range. The overall temperature coefficient (excluding the effects of external components) is typically±50 ppm/°C. The AD654 operates from a single supply of 5 V to 36 V and consumes only 2.0 mA quiescent current.

The low drift (4 µV/°C typ) input amplifier allows operation directly from small signals such as thermocouples or strain gauges while offering a high (250 MΩ) input resistance. Unlike most V/F converters, the AD654 provides a square-wave output, and can drive up to 12 TTL loads, optocouplers, long cables, or similar loads.






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