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Name: OP297FS
Brand: Analog Devices Inc.
SKU: OP297FS
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. OP297FS

Part No.:: OP297FS

Manufacturer:: Analog Devices Inc.

Package:: 8-SOIC (0.154, 3.90mm Width)

Datasheet:: OP297FS.pdf

Description:: IC OPAMP GP 2 CIRCUIT 8SOIC

In Stock:: 2070

Quantity:: Add To Cart

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OP297FS Specifications

Package/Case:
8-SOIC (0.154, 3.90mm Width)
Packaging:
Tube,Tube
Series:
-
ProductStatus:
Obsolete
AmplifierType:
General Purpose
NumberofCircuits:
2
OutputType:
-
SlewRate:
0.15V/µs
GainBandwidthProduct:
500 kHz
-3dbBandwidth:
-
Current-InputBias:
35 pA
Voltage-InputOffset:
50 µV
Current-Supply:
525µA (x2 Channels)
Current-Output/Channel:
-
Voltage-SupplySpan(Min):
4 V
Voltage-SupplySpan(Max):
40 V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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OP297FS information

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OP297FS Typical application Circuitry

OP297FS

The OP297FS is a dual operational amplifier that is low power and precise. It is especially well-suited for battery-powered instruments, precision instrumentation, and sensor amplification applications because of its high precision, low offset voltage, and low power consumption.

Application Scenarios

The OP297FS is versatile and can be utilized in:

- Battery-Powered Instruments: Due to its low power consumption.

- Precision Instrumentation: Provides extremely accurate readings.

- Sensor Signal Conditioning: Enhancing sensor low-level signals.

- Active Filtering: Implementing precise filters in audio and data signal processing.

Parameters and Features

- Low Offset Voltage: Minimizes error in precision applications.

- Low Power Consumption: Ideal for battery-operated devices.

- Dual Operational Amplifier: Provides two op-amps in a single package, enhancing design compactness.

- High Gain Bandwidth Product: Enables accurate signal processing across a wide frequency range.

Detailed Circuit Connection for Sensor Signal Conditioning

Let's illustrate how the OP297FS can be used to condition the signal from a temperature sensor before it is digitized by an ADC.

1. Power Supply Connections: Attach the positive power supply to pin 8 (V+) and the ground (or negative supply for dual-supply operations) to pin 4 (V-). Decoupling Capacitors, such as 0.1 µF ceramic capacitors, should be placed as close to these pins as possible to filter out power supply noise, ensuring stable operation.

2. Input Signal Connection: Connect the temperature sensor's output to the non-inverting input (pin 3) of the first OP297FS op-amp. A Series Resistor (R1, typically around 10kΩ) can be used here for input protection or to set the input impedance.

3. Feedback for Gain Setting: Establish a feedback loop from the output (pin 1) to the inverting input (pin 2) using a Feedback Resistor (Rf, for example, 100kΩ). Place a Grounded Resistor (Rg, say 10kΩ) from pin 2 to ground to set the circuit's gain based on the ratio (1 + Rf/Rg).

4. Output to ADC: The conditioned signal from pin 1 is now ready to be fed into an ADC for digital conversion. If necessary, a Low-pass Filter can be implemented at the output by adding a capacitor (Cf, for example, 1nF) in parallel with Rf to filter out high-frequency noise.

5. Utilizing the Second Op-Amp: The second OP297FS op-amp can be used for additional signal processing stages, such as further amplification or filtering, utilizing pins 5 (non-inverting input), 6 (inverting input), and 7 (output) for a comprehensive signal conditioning solution.

Design Considerations

When designing circuits with the OP297FS, several factors need to be addressed:

- Power Supply Quality: The performance of precision op-amps like the OP297FS can be significantly affected by power supply noise. Utilizing low-noise voltage regulators and proper decoupling are key.

- Thermal Stability: Given that the OP297FS is used in precision applications, temperature variations can impact its performance. Maintaining a stable temperature environment or employing temperature compensation techniques might be necessary.

- PCB Layout: Careful layout design is crucial to minimize noise pickup and parasitic effects. Keeping signal paths short and using ground planes can help maintain signal integrity.

- Load Considerations: The ability of the OP297FS to drive the intended load without affecting its performance or stability should be evaluated, including the potential need for an output buffer.

- Signal Integrity: Special attention should be given to shielding and grounding practices to prevent noise interference, especially in environments with significant electrical noise.

Utilizing the OP297FS in a sensor signal conditioning circuit highlights its capability to provide precise amplification and filtering, ensuring accurate and reliable signal processing for subsequent digital conversion or analysis.

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6. What is the process for return or replacement of OP297FS?

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 OP297FS we delivered, we will accept the replacement or return of the OP297FS 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 OP297FS.

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

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(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations