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Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

The OPA2345EA/250 is an integrated monolithic circuit belonging to the OPA2307 family of rail-to-rail, low-voltage, single-supply operational amplifiers. This device is designed to provide a high level of performance in a wide variety of voltage and current amplification, filtering and signal conditioning applications.

Features

• Low Supply Current: 250 μA/Amplifier
• Low Offset Voltage: 30 μV Maximum
• Large Supply Voltage Range: 2.2V to 5.5V
• Wide Common-Mode Input Voltage: 1.8V to VCC-1.4V
• Low RON Input Bias Current: 200 nA Maximum
• High Differential Gain: 110 dB Minimum, 20 MHz
• High Common-Mode Rejection Ratio: 103 dB Maximum, 20 MHz
• Low Input Voltage Noise: 1.8 nV/√Hz Maximum, 1 kHz

Application Fields

Due its extremely low power consumption and its outstanding performance, the OPA2345EA/250 can be applied in a wide variety of applications in the fields of instrumentation, process control, communications and consumer electronics, to name a few.

Instrumentation

This operational amplifier may be applied in instrumentation systems, such as industrial control, linearization and calibration, systems that require precision and accuracy. Additionally, it may be employed in differential amplifiers, sample-and-hold amplifiers and data converters.

Process Control

Due to its high speed and low noise performance, the OPA2345EA/250 can be used in process control systems as a sensor conditioning and noise suppression device. Additionally, this device can be employed for motor control applications, such as motor steering, speed control, torque control and current measurement.

Communications

It can be used in communications systems such as mobile phones, wireless LANs, base stations and other wide-area systems. This device provides an excellent level of performance for audio systems, and can be used for anti-aliasing filters, active filters, preamplifiers and other types of audio conditioning applications.

Consumer Electronics

In consumer electronics, the OPA2345EA/250 can be used as a general-purpose or specialized amplifier in a variety of applications, such as video modulators, video receivers, level detectors, video amplifiers and audio preamplifiers.

Operating Principles

The OPA2345EA/250 operates with a single voltage supply, providing the necessary rail-to-rail inputs and outputs for a wide range of applications. Its operating principle is based on the transimpedance amplifier configuration. This amplifier provides an output voltage that is related to the difference between two input currents, which is typically the difference between two resistors.

The two input ports are connected to the transimpedance amplifier, while the output port is connected to the operational amplifier, which provides the necessary amplification. The operational amplifier is biased and operates in the linear region. The output signal is then conditioned and can be used for signal processing or signal conversion applications.

The OPA2345EA/250 is a low-voltage, low-power, single-supply operational amplifier, which provides excellent levels of performance, including high common-mode rejection, wide dynamic range and low noise. This device has been designed to meet the requirements of a wide variety of voltage and current amplification, filtering and signal conditioning applications.

Conclusion

The OPA2345EA/250 is an integrated monolithic circuit belonging to the OPA2307 family of rail-to-rail, low-voltage, single-supply operational amplifiers. With its extremely low power consumption and excellent performance levels, this device can be applied in a wide variety of applications in the fields of instrumentation, process control, communications and consumer electronics.

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