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Name: OPA4340UA/2K5G4
Brand: Texas Instruments
SKU: OPA4340UA/2K5G4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Texas Instruments OPA4340UA/2K5G4

Part No.:: OPA4340UA/2K5G4

Manufacturer:: Texas Instruments

Package:: 14-SOIC (0.154, 3.90mm Width)

Datasheet:: OPA4340UA/2K5G4.pdf

Description:: IC CMOS 4 CIRCUIT 14SOIC

In Stock:: 2218

Quantity:: Add To Cart

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OPA4340UA/2K5G4 Specifications

Package/Case:
14-SOIC (0.154, 3.90mm Width)
Packaging:
Tape & Reel (TR)
Series:
microPOWER™
ProductStatus:
Discontinued at Mosen
AmplifierType:
CMOS
NumberofCircuits:
4
OutputType:
Rail-to-Rail
SlewRate:
6V/µs
GainBandwidthProduct:
5.5 MHz
-3dbBandwidth:
-
Current-InputBias:
0.2 pA
Voltage-InputOffset:
150 µV
Current-Supply:
750µA (x4 Channels)
Current-Output/Channel:
50 mA
Voltage-SupplySpan(Min):
2.5 V
Voltage-SupplySpan(Max):
5.5 V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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OPA4340UA/2K5G4 information

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OPA4340UA/2K5G4 Typical application Circuitry

OPA4340UA 2K5G4

The OPA4340UA/2K5G4 is a specific packaging variant of the OPA4340 series, an ultra-low power, precision operational amplifier with rail-to-rail input and output capabilities.

Application Scenarios:

An excellent application for the OPA4340UA/2K5G4 is in portable instrumentation, such as a handheld environmental sensor system, where its precision and low power consumption are critical for accurate data collection and extended battery life.

Parameter Characteristics:

The OPA4340UA/2K5G4 boasts features such as a wide bandwidth, low input bias current, and the ability to operate from a single low-voltage supply, all while maintaining low noise levels and high input impedance. These attributes make it highly suitable for precision analog signal processing.

Circuit Connection Details:

- Supply Voltage Application: The OPA4340UA/2K5G4 can be powered using a single supply or dual supplies. In a single-supply configuration, connect the positive supply to the V+ pin (pin 8) and connect the V− pin (pin 4) to ground. In dual-supply configurations, V+ and V− would be connected to the positive and negative supply voltages, respectively.

- Non-Inverting Amplifier Setup: To amplify a signal from an environmental sensor, connect the sensor's output to the non-inverting input (pin 3 for the first op-amp within the OPA4340UA/2K5G4 package). Set a reference voltage at the inverting input (pin 2) to bias the signal, especially useful in single-supply operations to maintain the signal within the op-amp's linear range.

- Feedback Loop for Gain Control: The gain configuration is established by connecting a feedback resistor (Rf) from the output (pin 1) to the inverting input (pin 2), and another resistor (Rg) from the inverting input to the ground. The amplifier's gain is then determined by the formula $1 + \frac{Rf}{Rg}$.

- Signal Filtering and Output: Incorporate a low-pass filter at the OPA4340UA/2K5G4's output (pin 1) to eliminate high-frequency noise, ensuring clean signal output for subsequent stages, such as an ADC or display unit. This can be achieved with a simple resistor-capacitor (RC) network.

Design Considerations:

- Minimizing Power Consumption: Given the OPA4340UA/2K5G4's use in portable devices, optimizing power efficiency is paramount. Selecting appropriate resistors with higher values can help reduce power consumption, albeit at the potential cost of increased noise.

- Input Offset Voltage: For precision applications, the input offset voltage of the OPA4340UA/2K5G4 can introduce measurement errors, particularly at low signal levels. Calibration procedures or offset compensation techniques might be necessary to mitigate this effect.

- Protection from Electrostatic Discharge (ESD): In portable devices, the OPA4340UA/2K5G4 and its connections might be exposed to ESD events. Incorporating protection diodes and resistors at critical nodes can safeguard the op-amp.

- Thermal Management: Although the OPA4340UA/2K5G4 is a low-power device, operating in confined spaces of portable devices might lead to elevated temperatures. Ensuring adequate thermal pathways, possibly through the PCB design, is essential for maintaining operational integrity.

By carefully integrating the OPA4340UA/2K5G4 into the circuit with these considerations, one can fully utilize its capabilities to enhance the performance and reliability of portable instrumentation devices.

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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.

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