Overview
The OPA2145IDGKR is a high-precision, low-noise operational amplifier (op-amp) produced by Texas Instruments. This device is part of the OPAx145 family, known for its excellent bandwidth and slew-rate-to-power ratio, making it suitable for a wide range of applications requiring high accuracy and low noise.
The OPA2145IDGKR is available in an 8-pin VSSOP package and features a dual-channel configuration, providing two independent op-amp channels in a single package. This design enhances flexibility and reduces the overall component count in system designs.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Gain-Bandwidth Product | 5.5 | MHz |
| Slew Rate | 20 | V/μs |
| Supply Voltage Range | ±2.25 V to ±18 V (dual supply), 4.5 V to 36 V (single supply) | V |
| Quiescent Current (per amplifier) | 445 - 475 | μA |
| Input Offset Voltage | ±0.15 to ±0.8 | μV |
| Input Bias Current | ±2 to ±10 | pA |
| Common-Mode Rejection Ratio (CMRR) | 118 to 140 | dB |
| Power-Supply Rejection Ratio (PSRR) | ±0.06 to ±0.3 | μV/V |
| Operating Temperature Range | –40°C to +125°C | °C |
Key Features
- High Precision: Low input offset voltage and high common-mode rejection ratio ensure accurate signal processing.
- Low Noise: High signal-to-noise ratio and low input voltage noise density make it suitable for noise-sensitive applications.
- High Bandwidth and Slew Rate: A gain-bandwidth product of 5.5 MHz and a slew rate of 20 V/μs enable fast and accurate signal handling.
- Rail-to-Rail Output: The output voltage can swing close to the supply rails, maximizing the dynamic range of the output signal.
- Low Power Consumption: Quiescent current as low as 445 μA per amplifier, making it energy-efficient.
- Dual-Channel Configuration: Two independent op-amp channels in a single package, enhancing design flexibility and reducing component count.
Applications
- Medical Equipment: Suitable for medical devices requiring high precision and low noise, such as ECG and EEG systems.
- Aerospace and Defense: Used in various military and aerospace applications where high reliability and precision are critical.
- Industrial Automation: Applied in control systems, sensors, and data acquisition systems where accuracy and stability are essential.
- Audio and Video Equipment: Ideal for audio and video processing due to its low noise and high signal fidelity.
- Test and Measurement Equipment: Used in oscilloscopes, signal generators, and other test equipment requiring high precision and low noise.
Q & A
- What is the gain-bandwidth product of the OPA2145IDGKR?
The gain-bandwidth product of the OPA2145IDGKR is 5.5 MHz.
- What is the slew rate of the OPA2145IDGKR?
The slew rate of the OPA2145IDGKR is 20 V/μs.
- What is the typical quiescent current per amplifier for the OPA2145IDGKR?
The typical quiescent current per amplifier for the OPA2145IDGKR is between 445 μA and 475 μA.
- What is the input offset voltage range for the OPA2145IDGKR?
The input offset voltage range for the OPA2145IDGKR is ±0.15 to ±0.8 μV.
- What is the common-mode rejection ratio (CMRR) of the OPA2145IDGKR?
The CMRR of the OPA2145IDGKR is between 118 dB and 140 dB.
- What is the operating temperature range for the OPA2145IDGKR?
The operating temperature range for the OPA2145IDGKR is –40°C to +125°C.
- What package types are available for the OPA2145IDGKR?
The OPA2145IDGKR is available in an 8-pin VSSOP package.
- Is the OPA2145IDGKR suitable for high-speed applications?
Yes, the OPA2145IDGKR is suitable for high-speed applications due to its high gain-bandwidth product and slew rate.
- What are some common applications of the OPA2145IDGKR?
The OPA2145IDGKR is commonly used in medical equipment, aerospace and defense, industrial automation, audio and video equipment, and test and measurement equipment.
- Does the OPA2145IDGKR have rail-to-rail output capability?
Yes, the OPA2145IDGKR has rail-to-rail output capability, allowing the output voltage to swing close to the supply rails.
