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Name: AD698SQ
Brand: Analog Devices Inc.
SKU: AD698SQ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Analog Devices Inc. AD698SQ

Part No.:: AD698SQ

Manufacturer:: Analog Devices Inc.

Package:: 24-CDIP (0.600, 15.24mm)

Datasheet:: AD698SQ.pdf

Description:: IC LVDT SGNL COND UNVRSL 24CDIP

In Stock:: 2164

Quantity:: Add To Cart

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AD698SQ Specifications

Package/Case:
24-CDIP (0.600, 15.24mm)
Packaging:
Tube
Series:
-
ProductStatus:
Active
Type:
Signal Conditioner
InputType:
Voltage
OutputType:
Voltage
Current-Supply:
15 mA
OperatingTemperature:
-55°C ~ 125°C
MountingType:
Through Hole

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AD698SQ information

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AD698SQ Typical application Circuitry

AD698SQ

The AD698SQ is a sophisticated signal conditioning chip designed to interface with Linear Variable Differential Transformers (LVDTs), converting their differential output signals into a single-ended DC voltage.

Application Environments: This chip is primarily used in precision position and displacement measurement systems, industrial automation, and aerospace instrumentation, where LVDTs are commonly employed for their accuracy and reliability.

Key Features: The AD698SQ boasts a wide input frequency range, built-in sine wave oscillator for LVDT excitation, precision rectification, and an adjustable output voltage range.

Circuit Design Example: Position Sensing in an Aerospace Control System

In an aerospace control system, the AD698SQ can be used to process the output of an LVDT used for position sensing in critical components like actuators and control surfaces.

1. Power Supply Connection: Connect a +15V power supply to the VCC pin (pin 24) and a -15V power supply to the VEE pin (pin 12) of the AD698SQ. Ground the AGND pin (pin 11).

2. LVDT Excitation: Connect the primary winding of the LVDT to the EXC+ pin (pin 9) and the EXC- pin (pin 10) to provide the necessary excitation signal.

3. LVDT Output Connection: Connect the secondary windings of the LVDT to the SIG+ pin (pin 3) and the SIG- pin (pin 2) to input the differential signal into the AD698SQ.

4. Output Voltage: The processed position signal is available as a DC voltage at the VOUT pin (pin 22), which can be fed into the control system's analog input.

Design Considerations:

- Excitation Frequency: Adjust the excitation frequency to match the LVDT's specifications using the FREQ ADJ pin (pin 17) and external components.

- Power Supply Decoupling: Employ decoupling capacitors near the VCC and VEE pins to minimize power supply noise and ensure stable operation.

- Temperature Compensation: Take into account the temperature coefficient of the AD698SQ and the operating temperature range to maintain accuracy in varying environmental conditions.

- Signal Filtering: Implement filtering at the VOUT pin to remove any residual high-frequency components from the output signal.

By integrating the AD698SQ into an aerospace control system for LVDT position sensing, one can achieve highly accurate and stable position measurements, ensuring precise control of critical components in demanding aerospace applications.

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6. What is the process for return or replacement of AD698SQ?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the AD698SQ we delivered, we will accept the replacement or return of the AD698SQ only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of AD698SQ.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations