OPA2137UA

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Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

OPA2137UA is a monolithic, high-performance OPA family operational amplifier with two independent op-amps. It is a JFET-input operational amplifier with internal Phase Reversal protection, and has low input bias currents, low input offset voltages, very low noise, and good offset voltage drift. It has a very wide frequency bandwidth and superior settling time—making it well-suited for precision active filter applications.

OPA2137UA incorporates a high-performances, low-bias-current amplifier on a single monolithic chip. The OPA is designed with on-chip input protection, high slew rate, and exceptional bandwidth; these features combine to make it an excellent choice for driving small-value resistors, as well as reducing the required filtering. It is particularly suited for high-precision instrumentation applications, such as active filters and precision threshold comparators.

Application Field

The OPA2137UA is ideally suited for a broad range of applications, such as medical instrumentation, waveform synthesis and shaping, low noise preamplifiers, post-processing electronics, precision audio applications, active filters and other related fields. It has a power-supply voltage range of 4.5V to 36V, allowing for flexibility for various projects.

The OPA2137UA is particularly well-suited for audio applications and specifically for those with high-fidelity requirements. Its low noise helps to ensure that the signal output is high-quality, even with very sensitive electronic components. It also features a wide bandwidth and low distortion, meaning that it can accurately capture audio signals and produce audio without significant loss in clarity. In addition, the OPA2137UA boasts high gain and wide dynamic range—features that are critical when using analog signals in any audio system.

The OPA2137UA is also used in medical instrumentation applications. This operational amplifier is ideal for measuring different signals in real-time, such as ECG signals, temperature signals, and other biomedical signals. Furthermore, it offers excellent noise performance and can be powered by a wide range of voltages—allowing for greater flexibility for medical projects or experiments.

Working Principle

The OPA2137UA is a high-performance monolithic OPA family operational amplifier with two independent, symmetrical op-amps. Its working principle is based on the input from one of the op-amps and the output from another op-amps, with the output from the latter being amplified by a gain factor. The output of the amplifier is then routed to the required destination, such as a filter. The gain factor of the amplifier is determined by the input resistance and feedback resistance, as well as the amplifier itself.

The OPA2137UA also utilizes a chopper amplifier operating at a high-speed chopping frequency. This helps to reduce low-frequency noise and signal distortion, which is essential for high-performance audio applications. This type of amplifier is also known as a switched-capacitor amplifier, since it uses switching operations to charge and discharge a capacitor.

The OPA2137UA is a versatile operational amplifier and is suitable for a wide range of applications due to its low noise performance and wide voltage range. It is a reliable choice for medical projects, audio applications, and precision instrumentation.

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