Analog Devices AD698 - Universal LVDT Signal Conditioner
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AD698 Universal LVDT Signal Conditioner

Data Sheets
Application Notes pdf(467k) Evaluation Boards Price, Packaging, and Availability
Product Description
The AD698 is a complete, monolithic Linear Variable Differential Transformer (LVDT) signal conditioning subsystem. It is used in conjunction with LVDTs to convert transducer mechanical...More
 Specifications
Excitation Frequency (Hz) 20 - 20k
Voltage Amplitude (V rms) 1.2 - 21.2
Output Current (mA rms) 40mA
Output Signal Range (V) ±11V
Output Signal Current 11mA
Gain Error (% of FS) 0.1
Gain Drift (ppm/C of FS) 20ppm/C
Offset Error (% OF FS) 0.02
Offset Drift (ppm/C) 5ppm/C
Inpt Vltg Rng (Vrms) 0.1 - 3.5
Supply Voltage Range (V) ±13, 0-17.5
Temp Range (°C) -40 to 85, -55 to 125
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 Functional Block Diagram
AD698 Functional Block Diagram
Symbols and Footprints
 Features
  • Single Chip Solution, Contains Internal Oscillator and Voltage Reference
  • No Adjustments Required
  • Interfaces to Half-Bridge, 4-Wire LVDT
  • DC Output Proportional to Position
  • 20 Hz to 20 kHz Frequency Range
  • Unipolar or Bipolar Output
  • Will Also Decode AC Bridge Signals
  • Outstanding Performance
    Linearity: 0.05%
    Output Voltage: ±11 V
    Gain Drift: 20 ppm/°C (typ)
    Offset Drift: 5 ppm/°C (typ)
 

 

 
Price, Packaging, and AvailabilityPrint Table
AD698 Model Options
Model Status Package Pins Temp
Range
Price*
(1000 pcs.)
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AD698AP Prodn 28 ld PLCC 28 Ind $17.30 8/22/2008N
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AD698APZ Prodn 28 ld PLCC 28 Ind $15.73 8/22/2008Y
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AD698SQ Prodn 24 ld CerDIP 24 Mil - 8/22/2008N
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The USA 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. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing. View Samples Cart View Purchase Cart
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Find Similar Products
   

Part#Excitation Frequency (Hz)Voltage Amplitude (V rms)Output Current (mA rms)Output Signal Range (V)Output Signal Current Gain Error (% of FS)Gain Drift (ppm/C of FS)Offset Error (% OF FS)Offset Drift (ppm/C) Inpt Vltg Rng (Vrms)Supply Voltage Range (V)Temp Range (°C)Price* (1000 pcs.)
AD59820 - 20k1.2 - 2040±1111mA0.4200.370.1 - 3.5±13; 0-17.5-40 to 85; 0 to 70$17.78
AD69820 - 20k1.2 - 21.240±1111mA0.1200.0250.1 - 3.5±13; 0-17.5-40 to 85; -55 to 125$15.73

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.


 
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Application Notes  (pdf, 466,906 bytes)
Technical Articles  
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Product Highlights
Signal Chains
Interactive Signal Chains