Overview
The OPA365AIDR is a high-performance, rail-to-rail operational amplifier produced by Texas Instruments. It is part of the OPAx365 series, which includes the OPA365 (single version) and OPA2365 (dual version). These CMOS operational amplifiers are optimized for very low voltage, single-supply applications and are known for their low-noise, high-speed operation, and excellent common-mode rejection ratio (CMRR).
Key Specifications
| Specification | Value |
|---|---|
| Gain Bandwidth | 50 MHz |
| Input Noise | 4.5 nV/√Hz at 100 kHz |
| Slew Rate | 25 V/µs |
| Settling Time | 0.3 μs to 0.01% |
| Input Offset Voltage | 100 µV |
| Input Bias Current | 0.2 pA |
| Supply Voltage Range | 2.2 V to 5.5 V |
| Common-Mode Rejection Ratio (CMRR) | 100 dB (minimum) |
| Input Common-Mode Range | 100 mV beyond both power-supply rails |
| Output Voltage Swing | Within 10 mV of the rails |
| Operating Temperature Range | −40°C to +125°C |
| Package | SOIC-8, SOT23-5 |
Key Features
- Rail-to-Rail Input and Output: The OPA365AIDR features 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.
- Low Noise and High Speed: With an input noise of 4.5 nV/√Hz and a gain bandwidth of 50 MHz, this amplifier is suitable for high-speed and low-noise applications.
- Zero-Crossover Distortion Topology: This unique topology eliminates the input offset transition region typical of many rail-to-rail operational amplifiers, ensuring excellent common-mode performance over the entire input range.
- High CMRR and Input Impedance: The OPA365AIDR boasts a high CMRR of 100 dB (minimum) and high input impedance, making it ideal for applications requiring high precision and stability.
- Internal ESD Protection: The device includes internal electrostatic discharge (ESD) protection circuits on all pins, providing in-circuit input overdrive protection.
Applications
- Signal Conditioning: The OPA365AIDR is well-suited for signal conditioning tasks due to its high precision and low noise characteristics.
- Data Acquisition: It is an excellent choice for driving sampling analog-to-digital converters (ADCs) due to its high-speed operation and low distortion.
- Audio: The amplifier's low noise and high CMRR make it suitable for audio applications where signal integrity is crucial.
- Sensor Amplification: It is used in sensor amplification due to its ability to handle a wide range of input signals with high accuracy.
- Active Filters and Test Equipment: The OPA365AIDR can be used in active filter designs and test equipment where high performance and stability are required.
Q & A
- What is the gain bandwidth of the OPA365AIDR?
The gain bandwidth of the OPA365AIDR is 50 MHz.
- What is the input noise of the OPA365AIDR?
The input noise of the OPA365AIDR is 4.5 nV/√Hz at 100 kHz.
- What is the slew rate of the OPA365AIDR?
The slew rate of the OPA365AIDR is 25 V/µs.
- What is the common-mode rejection ratio (CMRR) of the OPA365AIDR?
The CMRR of the OPA365AIDR is 100 dB (minimum).
- What is the supply voltage range for the OPA365AIDR?
The supply voltage range for the OPA365AIDR is 2.2 V to 5.5 V.
- What are the typical applications of the OPA365AIDR?
The OPA365AIDR is typically used in signal conditioning, data acquisition, audio, sensor amplification, active filters, and test equipment.
- Does the OPA365AIDR have internal ESD protection?
Yes, the OPA365AIDR includes internal electrostatic discharge (ESD) protection circuits on all pins.
- What are the available packages for the OPA365AIDR?
The OPA365AIDR is available in SOIC-8 and SOT23-5 packages.
- What is the operating temperature range for the OPA365AIDR?
The operating temperature range for the OPA365AIDR is −40°C to +125°C.
- Why is the OPA365AIDR suitable for driving ADCs?
The OPA365AIDR is suitable for driving ADCs due to its high-speed operation, low noise, and low distortion characteristics.
