1. Products
  2. A/D Converters (ADC)
  3. Integrated/Special Purpose A/D Converters
  4. Voltage to Frequency Converters
  5. AD654


Overview

Features and Benefits

  • Low Cost
  • Single or Dual Supply, 5 V to 36 V,
    ±5 V to ±18 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

Product Details

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.

Product Lifecycle icon-not-recommended Not Recommended for New Designs

This designates products ADI does not recommend broadly for new designs.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
AD654JNZ Material Declaration Reliability Data 8-Lead PDIP
AD654JRZ Material Declaration Reliability Data 8-Lead SOIC
AD654JRZ-REEL Material Declaration Reliability Data 8-Lead SOIC
AD654JRZ-REEL7 Material Declaration Reliability Data 8-Lead SOIC
Wafer Fabrication Data

PCN-PDN Information

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Sample & Buy


Ordering FAQs


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Buy Now Pricing


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List Pricing


(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

 

Lead Times


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Sampling


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