Overview
The OPA842IDBVRG4, produced by Texas Instruments, is a high-performance, wideband, low-distortion operational amplifier. This device is renowned for its exceptional speed and dynamic range, making it suitable for a variety of high-frequency and high-precision applications. The OPA842 is unity-gain stable and uses a voltage-feedback architecture, which ensures low harmonic distortion and high open-loop gain.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Gain-Bandwidth Product | 200 MHz | |
| Unity-Gain Bandwidth | 400 MHz | |
| Input Voltage Noise | 2.6 nV/√Hz | |
| Harmonic Distortion (5 MHz) | -93 dBc | |
| Open-Loop Gain | 110 dB | |
| Settling Time (0.01%) | 22 ns | |
| DC Voltage Offset | 300 μV (Typical) | |
| Output Voltage Swing (RL > 1 kΩ) | ±3.2 V (Positive), ±3.7 V (Negative) | |
| Output Current (Sourcing) | ±100 mA | |
| Power Supply Voltage | ±5 V (Typical) | |
| Operating Temperature Range | -40°C to +85°C |
Key Features
- Unity-gain stable, voltage-feedback architecture
- Exceptionally low harmonic distortion over a wide frequency range
- High open-loop gain of 110 dB
- Fast settling time of 22 ns (0.01%)
- Low DC voltage offset of 300 μV (Typical)
- Low input voltage noise of 2.6 nV/√Hz
- High output current drive capability
- Professional-level differential gain/phase performance
Applications
- ADC/DAC buffer drivers
- Low-distortion IF amplifiers
- Active filter configurations
- Low-noise differential receivers
- High-resolution imaging
- Test instrumentation
- Professional audio
- Transimpedance amplifiers and gain of +2 video line drivers
- Wideband integrators
Q & A
- What is the gain-bandwidth product of the OPA842?
The gain-bandwidth product of the OPA842 is 200 MHz.
- What is the unity-gain bandwidth of the OPA842?
The unity-gain bandwidth of the OPA842 is 400 MHz.
- What is the input voltage noise of the OPA842?
The input voltage noise of the OPA842 is 2.6 nV/√Hz.
- What is the harmonic distortion of the OPA842 at 5 MHz?
The harmonic distortion of the OPA842 at 5 MHz is -93 dBc.
- What is the open-loop gain of the OPA842?
The open-loop gain of the OPA842 is 110 dB.
- What is the settling time of the OPA842 for a 0.01% accuracy?
The settling time of the OPA842 for a 0.01% accuracy is 22 ns.
- What is the typical DC voltage offset of the OPA842?
The typical DC voltage offset of the OPA842 is 300 μV.
- What are the typical output voltage swing limits for the OPA842?
The typical output voltage swing limits for the OPA842 are ±3.2 V (Positive) and ±3.7 V (Negative) for RL > 1 kΩ.
- What is the maximum output current sourcing capability of the OPA842?
The maximum output current sourcing capability of the OPA842 is ±100 mA.
- What are some common applications of the OPA842?
The OPA842 is commonly used in ADC/DAC buffer drivers, low-distortion IF amplifiers, active filter configurations, low-noise differential receivers, high-resolution imaging, test instrumentation, professional audio, transimpedance amplifiers, and gain of +2 video line drivers.
