Overview
The OPA2822U/2K5, produced by Texas Instruments, is a dual, wideband, low-noise operational amplifier designed for high-performance applications. It operates on a low supply current of 4.8mA per channel and is versatile, supporting a wide range of supply voltages from a single +5V to ±5V and up to a single +12V. This amplifier is particularly suited for xDSL receiver applications due to its exceptionally low input noise and harmonic distortion. It also offers high unity gain bandwidth and high output current, making it suitable for driving heavy loads such as passive filters and codecs.
Key Specifications
| Parameter | Typical Value | Min/Max Value | Units |
|---|---|---|---|
| Input Noise Voltage | 2.0 | nV/√Hz | |
| Unity Gain Bandwidth | 500 | MHz | |
| Gain-Bandwidth Product | 240 | MHz | |
| Output Current | 90 | mA | |
| Supply Current per Channel | 4.8 | mA | |
| Harmonic Distortion (2VPP, 1MHz) | ≤ –100 | dBc | |
| Slew Rate (G = +2, 2V Step) | 120 | V/µs | |
| Small-Signal Bandwidth (G = +1, VO = 0.1VPP) | 350 | MHz | |
| Large-Signal Bandwidth (G = +2, VO = 2VPP) | 20 | MHz |
Key Features
- Low input noise voltage: 2.0nV/√Hz
- High unity gain bandwidth: 500MHz
- High gain-bandwidth product: 240MHz
- High output current: 90mA
- Single +5V to +12V operation
- Low supply current: 4.8mA/ch
- Exceptionally low harmonic distortion, particularly in differential configurations
- Adequate output current to drive heavy loads such as passive filters and codecs
Applications
- xDSL differential line receivers
- High dynamic range ADC drivers
- Low noise PLL integrators
- Transimpedance amplifiers
- Precision baseband I/Q amplifiers
- Active filters
Q & A
- What is the typical input noise voltage of the OPA2822U/2K5? The typical input noise voltage is 2.0nV/√Hz.
- What is the unity gain bandwidth of the OPA2822U/2K5? The unity gain bandwidth is 500MHz.
- What is the gain-bandwidth product of the OPA2822U/2K5? The gain-bandwidth product is 240MHz.
- How much output current can the OPA2822U/2K5 provide? The OPA2822U/2K5 can provide up to 90mA of output current.
- What is the supply current per channel for the OPA2822U/2K5? The supply current per channel is 4.8mA.
- What are the typical harmonic distortion levels for the OPA2822U/2K5? The harmonic distortion is ≤ –100dBc for a 2VPP differential output at 1MHz.
- What is the slew rate of the OPA2822U/2K5 for a gain of +2 and a 2V step? The slew rate is 120V/µs.
- What are some common applications of the OPA2822U/2K5? Common applications include xDSL differential line receivers, high dynamic range ADC drivers, low noise PLL integrators, transimpedance amplifiers, precision baseband I/Q amplifiers, and active filters.
- What is the operating supply voltage range for the OPA2822U/2K5? The OPA2822U/2K5 can operate from a single +5V to ±5V and up to a single +12V.
- How does the OPA2822U/2K5 handle heavy loads? The OPA2822U/2K5 provides adequate output current to drive heavy loads such as passive filters and codecs.
