AD654
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AD654

Low Cost Monolithic Voltage-to-Frequency Converter

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Part Models 4
1ku List Price Starting From $7.15
Features
  • 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
Additional Details
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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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file View Data Sheet (Rev.C)
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Part Models 4
1ku List Price Starting From $7.15
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AD654

Documentation

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Data Sheet

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UPDATED 09/28/2006
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AD654: Low Cost Monolithic Voltage-to-Frequency Converter Data Sheet (Rev.C)

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UPDATED 09/28/2006
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AD654: 低価格モノリシック電圧/周波数コンバータ (Rev.B)

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Application Note

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UPDATED 01/01/2000
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AN-278: Operation and Applications of the AD654 IC V-to-F Converter redirect icon

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UPDATED 01/01/2000
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AN-276: Analog to Digital Conversion by Using V/F Converters redirect icon

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UPDATED 10/09/2002
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AN-361: Ask the Applications Engineer (V/F Converters) redirect icon

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UPDATED 08/26/2020
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AN-276: Analog-to-Digital Conversion Using Voltage-to-Frequency Converters redirect icon

Frequently Asked Question

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UPDATED 06/17/2015
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Documentation

Technical Documents 6
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Analog Dialogue 1

Ask the Applications Engineer—14: High Frequency Signal Contamination

Rarely Asked Question Page 8

Make do!
Transformers: They’re Not All Boat Anchors
Radio Frequency Interference (or how to get a free lunch at a very good restaurant)
Why Good Engineers Use the Best Components
Tick-Tock, Tick-Tock
Sigma Delta Converters are Not Really Hard to Understand
Slow “starting” ADCs
Do Something with that Unused Pin!

Student Zone Article page 1

ADALM2000 Activity: The Phase-Locked Loop

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2016-03-14

Summer Camp Lab 3: AD654 LED Flasher

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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 Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD654JNZ 8-Lead PDIP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
AD654JRZ 8-Lead SOIC external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
AD654JRZ-REEL 8-Lead SOIC external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
AD654JRZ-REEL7 8-Lead SOIC external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link

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Nov 9, 2011

- 11_0182

Test Site Transfer from Analog Devices Philippines Inc in Paranaque to Analog Devices General Trias in Cavite, Philippines

AD654JNZ

pdf

PCN11_0182_Form

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xls

Material_Report

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Aug 19, 2009

- 07_0024

Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad

AD654JNZ

Material_Report.csv

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Material_Report

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Parts List

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PCN07_0024_Form

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Qual Data

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Nov 23, 2010

- 10_0004

Halogen Free Material Change for SOIC Narrow Body Products Assembled at Amkor

AD654JRZ

AD654JRZ-REEL

AD654JRZ-REEL7

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PCN10_0004_Form

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xls

Material_Report

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pdf

ADI0012 Reliability Report

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Part Models

Product Lifecycle

PCN

Nov 9, 2011

- 11_0182

arrow down

Test Site Transfer from Analog Devices Philippines Inc in Paranaque to Analog Devices General Trias in Cavite, Philippines

AD654JNZ

pdf

PCN11_0182_Form

external-icon

xls

Material_Report

Download
Aug 19, 2009

- 07_0024

arrow down

Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad

AD654JNZ

Material_Report.csv

xls

Material_Report

Download

pdf

Parts List

external-icon

pdf

PCN07_0024_Form

external-icon

pdf

Qual Data

external-icon
Nov 23, 2010

- 10_0004

arrow down

Halogen Free Material Change for SOIC Narrow Body Products Assembled at Amkor

AD654JRZ

AD654JRZ-REEL

AD654JRZ-REEL7

pdf

PCN10_0004_Form

external-icon

xls

Material_Report

Download

pdf

ADI0012 Reliability Report

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