Overview
The OPA842IDR from Texas Instruments is a wideband, low distortion, unity-gain stable, voltage-feedback operational amplifier. This device is renowned for its exceptional speed and dynamic range, making it suitable for a variety of high-performance applications. The OPA842IDR features a unity-gain bandwidth of 400MHz and a gain-bandwidth product of 200MHz, ensuring high fidelity signal processing over a broad frequency range.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Unity-Gain Bandwidth | 400 | MHz | - |
| Gain-Bandwidth Product | 200 | MHz | - |
| Input Voltage Noise | 2.6 | nV/√Hz | - |
| Harmonic Distortion | -93 | dBc (5MHz) | - |
| Open-Loop Gain | 110 | dB | - |
| Settling Time (0.01%) | 22 | ns | - |
| DC Voltage Offset | 300 | mV (Typical) | - |
| Output Voltage Swing (RL > 1kΩ) | ±2.9 to ±3.2 | V | VS = ±5V, TA = +25°C |
| Current Output, Sourcing | ±100 | mA | VO = 0V, VS = ±5V |
| Power Supply Voltage | ±3.5 to ±6 | V | - |
| Quiescent Current | 20.2 to 22.5 | mA | VS = ±5V, TA = +25°C to +85°C |
| Operating Temperature Range | -40 to +85 | °C | - |
Key Features
- Unity-Gain Stable: The OPA842IDR is stable at unity gain, making it versatile for various applications.
- Low Input Voltage Noise: With an input voltage noise of 2.6 nV/√Hz, it is suitable for high-sensitivity applications.
- Very Low Distortion: Achieves exceptionally low harmonic distortion of -93 dBc at 5 MHz.
- High Open-Loop Gain: Offers an open-loop gain of 110 dB.
- Fast Settling Time: Settles to 0.01% in 22 ns.
- Low DC Voltage Offset: Typical DC voltage offset of 300 mV.
- High Output Current Drive: Capable of sourcing up to ±100 mA.
Applications
- ADC/DAC Buffer Driver: Ideal for low-distortion analog-to-digital converter (ADC) buffers.
- Low Distortion IF Amplifier: Suitable for intermediate frequency amplifiers requiring low distortion.
- Active Filter Configuration: Can be used in active filter circuits due to its high bandwidth and low distortion.
- Low-Noise Differential Receiver: Appropriate for low-noise differential receiver applications.
- High-Resolution Imaging: Used in high-resolution imaging systems where high dynamic range is required.
- Test Instrumentation: Suitable for test and measurement equipment due to its high accuracy and low distortion.
- Professional Audio: Ideal for professional audio applications requiring high fidelity and low noise.
Q & A
- Q: What is the unity-gain bandwidth of the OPA842IDR?
A: The unity-gain bandwidth of the OPA842IDR is 400 MHz. - Q: What is the gain-bandwidth product of the OPA842IDR?
A: The gain-bandwidth product of the OPA842IDR is 200 MHz. - Q: What is the input voltage noise of the OPA842IDR?
A: The input voltage noise of the OPA842IDR is 2.6 nV/√Hz. - Q: What is the harmonic distortion of the OPA842IDR at 5 MHz?
A: The harmonic distortion of the OPA842IDR at 5 MHz is -93 dBc. - Q: What is the open-loop gain of the OPA842IDR?
A: The open-loop gain of the OPA842IDR is 110 dB. - Q: How long does the OPA842IDR take to settle to 0.01%?
A: The OPA842IDR settles to 0.01% in 22 ns. - Q: What is the typical DC voltage offset of the OPA842IDR?
A: The typical DC voltage offset of the OPA842IDR is 300 mV. - Q: What is the maximum output current of the OPA842IDR?
A: The OPA842IDR can source up to ±100 mA. - Q: What are some common applications of the OPA842IDR?
A: Common applications include ADC/DAC buffer drivers, low distortion IF amplifiers, active filter configurations, low-noise differential receivers, high-resolution imaging, test instrumentation, and professional audio. - Q: What is the operating temperature range of the OPA842IDR?
A: The operating temperature range of the OPA842IDR is -40°C to +85°C.
