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Name: OPA2991IDGKR
Brand: Texas Instruments
SKU: OPA2991IDGKR
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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Texas Instruments OPA2991IDGKR

Part No.:: OPA2991IDGKR

Manufacturer:: Texas Instruments

Package:: 8-TSSOP, 8-MSOP (0.118, 3.00mm Width)

Datasheet:: OPA2991IDGKR.pdf

Description:: IC OPAMP

In Stock:: 3353

Quantity:: Add To Cart

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OPA2991IDGKR Specifications

Package/Case:
8-TSSOP, 8-MSOP (0.118, 3.00mm Width)
Packaging:
Tape & Reel (TR)
Series:
-
ProductStatus:
Active
AmplifierType:
General Purpose
NumberofCircuits:
4
OutputType:
Rail-to-Rail
SlewRate:
21V/µs
GainBandwidthProduct:
4.5 MHz
-3dbBandwidth:
-
Current-InputBias:
10 pA
Voltage-InputOffset:
125 µV
Current-Supply:
560µA (x4 Channels)
Current-Output/Channel:
75 mA
Voltage-SupplySpan(Min):
2.7 V
Voltage-SupplySpan(Max):
40 V
OperatingTemperature:
-40°C ~ 125°C (TA)
MountingType:
Surface Mount

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OPA2991IDGKR information

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OPA2991IDGKR Typical application Circuitry

OPA2991IDGKR

A low-power, dual-channel operational amplifier (op-amp) with rail-to-rail output and a broad input voltage range is the OPA2991IDGKR.

Key Features and Specifications

- Dual-Channel Configuration: The OPA2991IDGKR houses two op-amps in one package, optimizing space and reducing component count in dual-channel applications.

- Low Power Consumption: It is designed for energy-efficient applications, ensuring minimal drain on power sources.

- Broad Supply Voltage Range: This op-amp can function at a wide range of supply voltages, meeting the demands of different applications.

- Rail-to-Rail Output: The ability to swing outputs close to the supply rails makes it suitable for driving ADCs or other components requiring a full dynamic range.

Application Scenario: Battery-Powered Sensor Interface

A common application for the OPA2991IDGKR is in a battery-powered sensor interface, where it can be used to amplify and condition sensor signals before they are digitized by an ADC. This scenario highlights the op-amp's ability to operate with low power consumption and within a wide voltage range.

Circuit Connection Detail

- Sensor Signal Input: Connect the sensor output to the non-inverting input (Pin 3) of the first amplifier within the OPA2991IDGKR package. This ensures accurate amplification of the sensor signal.

- Feedback Loop for Gain Setting: Place a resistor (R1) between the output (Pin 1) and the inverting input (Pin 2) of the first amplifier to set the feedback loop. Another resistor (R2) connects the inverting input (Pin 2) to ground. The ratio of R1 to R2 determines the amplifier's gain, providing exact control over the amplification of the signal.

- Power Supply Connections: Apply a positive voltage to the V+ pin (Pin 8) and, if needed, a negative voltage to the V- pin (Pin 4), though many applications will operate the OPA2991IDGKR with a single supply for power efficiency.

- Output to ADC: The output from the first op-amp (Pin 1) can be directly connected to an ADC for digitization. The rail-to-rail output capability of the OPA2991IDGKR ensures the maximum dynamic range is utilized.

- Bypass Capacitor for Power Stability: A bypass capacitor (C1) should be placed close to the power supply pins (V+ and V-, Pins 8 and 4) to filter out noise from the power supply and ensure stable operation of the OPA2991IDGKR.

Design Considerations

When integrating the OPA2991IDGKR into a battery-powered sensor interface, several key factors need to be addressed:

- Power Efficiency: Given the battery-powered nature of the application, optimizing the circuit for low power consumption is crucial. This involves selecting appropriate power supply voltages and minimizing the quiescent current draw.

- Gain Configuration: The accuracy of gain setting components (R1 and R2) directly impacts the signal conditioning process. Choosing precision resistors can improve the overall accuracy of the system.

- Input and Output Range: Ensuring that the sensor's output voltage range matches the input range of the OPA2991IDGKR and the connected ADC maximizes system accuracy and efficiency.

- Noise Considerations: Minimizing noise is essential for accurate signal processing. This can involve careful layout practices, such as shortening trace lengths and using bypass capacitors effectively.

Utilizing the OPA2991IDGKR in a battery-powered sensor interface takes advantage of its low-power, dual-channel operation, and rail-to-rail output, making it an ideal choice for portable and remote sensing applications. Proper attention to design details, including power management, gain setting, and noise reduction, ensures that the OPA2991IDGKR performs optimally in these scenarios, providing accurate and reliable signal conditioning.

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6. What is the process for return or replacement of OPA2991IDGKR?

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(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 OPA2991IDGKR.

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