Overview
The OPA365, produced by Texas Instruments, is a high-performance, single-supply operational amplifier designed for a wide range of applications. It is known for its low noise, high speed, and excellent common-mode rejection ratio (CMRR). This amplifier is particularly suited for use in audio, signal conditioning, and sensor amplification due to its rail-to-rail input and output swing and zero-crossover distortion. The OPA365 is available in micro-size packages such as SOT23-5 and SOIC-8, making it versatile for various design needs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 5.5 | V |
| Input Voltage Range | (V–) – 0.1 to (V+) + 0.1 | V |
| Common-Mode Rejection Ratio (CMRR) | 100 to 120 | dB |
| Open-Loop Gain (AOL) | 100 to 120 | dB |
| Gain Bandwidth Product | 50 | MHz |
| Input Noise Voltage | 4.5 | nV/√Hz |
| Input Bias Current | Up to 1000 | pA |
| Operating Temperature Range | –40 to +125 | °C |
| Package Types | SOT23-5, SOIC-8 |
Key Features
- Rail-to-Rail Input and Output Swing: The OPA365 offers rail-to-rail input and output swing, allowing the input common-mode range to include both the negative and positive supplies, and the output voltage swing to be within 10 mV of the rails.
- Zero-Crossover Distortion: This amplifier features no input stage crossover distortion, ensuring high fidelity in applications such as audio.
- High CMRR and PSRR: Excellent common-mode rejection ratio (CMRR) and power-supply rejection ratio (PSRR) make it suitable for high-precision applications.
- Low Noise: With a low noise voltage of 4.5 nV/√Hz, it is ideal for noise-sensitive applications.
- High-Speed Operation: The 50-MHz gain bandwidth product makes it suitable for high-speed applications, including driving sampling analog-to-digital converters (ADCs).
Applications
- Audio Applications: The OPA365 is well-suited for audio applications due to its low noise and zero-crossover distortion.
- Signal Conditioning: It is used in signal conditioning circuits where high precision and low noise are required.
- Sensor Amplification: The amplifier is used to amplify signals from various sensors, benefiting from its high CMRR and rail-to-rail input/output swing.
- Driving ADCs: Its high-speed operation makes it an excellent choice for driving sampling analog-to-digital converters.
Q & A
- What is the supply voltage range for the OPA365?
The supply voltage range for the OPA365 is up to 5.5 V.
- What are the key package types available for the OPA365?
The OPA365 is available in SOT23-5 and SOIC-8 packages.
- What is the common-mode rejection ratio (CMRR) of the OPA365?
The CMRR of the OPA365 is between 100 dB and 120 dB.
- What is the gain bandwidth product of the OPA365?
The gain bandwidth product of the OPA365 is 50 MHz.
- What are the typical applications of the OPA365?
The OPA365 is typically used in audio, signal conditioning, sensor amplification, and driving sampling ADCs.
- What is the input noise voltage of the OPA365?
The input noise voltage of the OPA365 is 4.5 nV/√Hz.
- Does the OPA365 have rail-to-rail input and output swing?
Yes, the OPA365 features rail-to-rail input and output swing.
- What is the operating temperature range for the OPA365?
The operating temperature range for the OPA365 is from –40°C to +125°C.
- Is the OPA365 suitable for high-speed applications?
Yes, the OPA365 is suitable for high-speed applications due to its 50-MHz gain bandwidth product.
- Does the OPA365 have zero-crossover distortion?
Yes, the OPA365 features no input stage crossover distortion.
