OPA2137PA

OPA2137PA is a high-performance, low-distortion programmable op amp from Texas Instruments. Widely used in professional audio equipment, the OPA2137PA offers 0.00035% distortion, high slew rate and audio bandwidth of 50KHz. It is a double-channel amplifier with a voltage range of -20V to +20V and a current consumption of approximately 200mA. The OPA2137PA is ideal for high-precision, low-distortion applications such as audio pre-amplifiers, tone controls and amplifiers.

The OPA2137PA is an instrumentation amplifier, meaning it amplifies signals in response to applied voltage. It is designed to detect and measure small voltage changes even in noisy environments. The OPA2137PA is designed to drive high-impedance load such as headphones, speakers, and active filters by providing a low input impedance and a high slew rate. It is used in audio pre-amplifiers to increase the amount of signal before it gets to the main amplifier, making more subtle details audible.

A typical application circuit of the OPA2137PA shows two amplifier channels. The first channel has two bipolar transistors, a resistor, and a capacitor. The output current from this channel is then sent to the second channel, which has two capacitors and two resistors. The second channel performs the final gain and phase shift adjustments before the signal is sent to the power amplifier.

The OPA2137PA is powered by either a dual-supply or a single-supply. When using a dual-supply, the OPA2137PA will supply both positive and negative voltages to the device. When using a single-supply, the OPA2137PA will supply a single voltage, usually 12V or 24V, to the device. The OPA2137PA can be adjusted with a single resistor, making it a good choice for increasing the signal strength in low-cost applications.

The OPA2137PA is a versatile op amp that can be used in a wide range of applications. It excels in providing low-distortion audio amplification, excellent power supply rejection ratio, and low input offset voltage. It is suitable for both high-impedance and low-impedance systems. The OPA2137PA is ideal for professional audio applications, from PA systems to recording studios.