OPA2743UAG4

Voltage - Input Offset:	1.5mV
Base Part Number:	OPA2743
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply, Single/Dual (±):	3.5 V ~ 12 V, ±1.75 V ~ 6 V
Current - Output / Channel:	20mA
Current - Supply:	1.1mA
Series:	--
Current - Input Bias:	1pA
Gain Bandwidth Product:	7MHz
Slew Rate:	10 V/µs
Output Type:	Rail-to-Rail
Number of Circuits:	2
Amplifier Type:	General Purpose
Part Status:	Active
Packaging:	Tube

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OPA2743UAG4 Application Field and Working Principle

The OPA2743UAG4 Operational Amplifier is a highly-precise instrumentation amplifier specifically designed for computer, industrial, communications and instrumentation applications. It offers several features that make it ideal for precision measurements in transmitters, receivers and instrumentation systems.

Features and Benefits

The OPA2743UAG4 offers several features and benefits which make it ideal for precision signal measurements:

• Very low noise: A low input-referred noise specification of 1.2 µVrms (0.5 Hz to 100 Hz), as well as a low input bias current (2 pA typical @ 25°C).
• High common-mode rejection: A CMRR (Common-Mode Rejection Ratio) of typically 90 dB allows for accurate signal measurements in a noisy environment.
• High CMR: High CMR (Common-Mode Range) allows for a wide range of signal measurements due to its wide input range (up to 60 V differential).
• Low input offset voltage: A low input offset voltage of 2 mV (maximum) allows for precise measurements regardless of the signal level.
• High slew rate: A maximum slew rate of 15 V/µs allows for quick, precise signal measurements.
• High open loop gain: A maximum open-loop gain of 200,000 allows for precise measurements without any DC offset.

Application Fields

The OPA2743UAG4 is an ideal amplifier for a wide range of computer, industrial, communications and instrumentation applications. It can be used in applications such as:

• Instrumentation amplifiers: It can be used as an instrumentation amplifier for precise signal measurements in a wide range of instrumentation systems.
• Industrial applications: It can be used as a line driver in industrial systems for accurate signal measurements.
• Computer applications: It can be used as an analog amplifier in computer systems for precise signal measurements in power supplies and other areas.
• Communications systems: It can be used as an amplifier for precise signal measurements in a wide range of communications systems.

Working Principle

The OPA2743UAG4 Operational Amplifier is a three-stage, low-noise, high-precision instrumentation amplifier designed for use in computer, industrial, communications and instrumentation applications. It uses the traditional three-stage cascaded arrangement consisting of three amplifiers in series. The first amplifier takes the signal from the input and amplifies it to the desired level. The second amplifier takes the signal from the first amplifier and filters it to remove any unwanted low frequency signals components. The third amplifier amplifies the filtered signal and outputs it. The OPA2743UAG4 uses an integrated feedback loop to maintain a precise Gain-Bandwidth product (GBWP). This ensures the amplifier is able to accurately reproduce the signal from the input with minimum distortion. The OPA2743UAG4 is also designed with low input-referred noise, low input offset voltage and a very high CMRR (Common-Mode Rejection Ratio). These features make it ideal for precise measurements in a wide range of environments.The OPA2743UAG4 is available in a variety of packages, making it suitable for a wide range of applications. It is available in both MSOP and DFN packages and it is also available in a variety of gain options, allowing for precise measurements to be made in a wide range of applications.

Conclusion

The OPA2743UAG4 is a highly-precise instrumentation amplifier, specifically designed for computer, industrial, communications and instrumentation applications. It offers several features such as very low noise, high CMRR (Common-Mode Rejection Ratio), low input offset voltage, high slew rate and high open loop gain that make it ideal for precision measurements in a wide range of applications. The OPA2743UAG4 is available in a variety of packages and gain options, allowing for precise measurements to be made in a wide range of environments.

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