Overview
The AD9631AR-REEL, produced by Analog Devices Inc., is a high-performance voltage feedback amplifier. This device is part of the AD9631/AD9632 series, known for their exceptional speed, wide bandwidth, and ultralow distortion. The AD9631 is specifically unity gain stable, making it highly versatile for various applications. It combines the best characteristics of both current feedback and voltage feedback amplifiers, offering a classical op amp structure that works predictably in many designs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Resistance | 500 | 500 | 500 | kΩ |
| Input Capacitance | 1.2 | 1.2 | 1.2 | pF |
| Input Common-Mode Voltage Range | ±3.4 | ±3.4 | ±3.4 | V |
| Output Voltage Range (RL = 150 Ω) | ±3.2 | ±3.9 | ±3.9 | V |
| Output Current | 70 | 70 | 70 | mA |
| Output Resistance | 0.3 | 0.3 | 0.3 | Ω |
| Short Circuit Current | 240 | 240 | 240 | mA |
| Supply Voltage Range | ±3.0 | ±5.0 | ±6.0 | V |
| Quiescent Current | 16 | 17 | 18 | mA |
| Power Supply Rejection Ratio | 50 | 60 | 66 | dB |
| Settling Time to 0.01%, 2 V step | 16 | ns | ||
| Slew Rate | 1300 | V/μs | ||
| Small Signal Bandwidth | 320 | MHz | ||
| Large Signal Bandwidth | 175 | MHz |
Key Features
- Unity gain stability for the AD9631, and stability at gains of 2 or greater for the AD9632.
- Exceptionally fast settling time of 16 ns to 0.01% for a 2 V step.
- High slew rate of 1300 V/μs.
- Wide small signal bandwidth of 320 MHz and large signal bandwidth of 175 MHz.
- Ultralow distortion, with harmonic distortion of −72 dBc at 20 MHz.
- High impedance balanced inputs, allowing for maximum flexibility in designing active filters.
- Operates over an industrial temperature range of −40°C to +85°C.
- Available in PDIP and SOIC packages.
Applications
- ADC input drivers.
- Differential amplifiers.
- IF/RF amplifiers.
- Pulse amplifiers.
- Professional video and DAC current to voltage conversion.
- Baseband and video communications.
- Pin diode receivers.
- Active filters, integrators, and log amps.
Q & A
- What is the primary architecture of the AD9631/AD9632 amplifiers? The AD9631/AD9632 use a voltage feedback architecture.
- What are the key benefits of the AD9631/AD9632 amplifiers? They offer exceptionally fast settling times, wide bandwidths, and ultralow distortion, making them ideal for high-speed applications.
- What is the typical slew rate of the AD9631/AD9632? The typical slew rate is 1300 V/μs.
- What are the temperature ranges for the AD9631/AD9632? They operate over an industrial temperature range of −40°C to +85°C.
- In what packages are the AD9631/AD9632 available? They are available in PDIP and SOIC packages.
- What is the typical harmonic distortion at 20 MHz for the AD9631? The typical harmonic distortion is −72 dBc at 20 MHz.
- What are some common applications for the AD9631/AD9632? Common applications include ADC input drivers, differential amplifiers, IF/RF amplifiers, pulse amplifiers, and professional video systems.
- What is the quiescent current of the AD9631/AD9632? The quiescent current is typically 17 mA.
- What is the power supply rejection ratio of the AD9631/AD9632? The power supply rejection ratio is typically between 50 dB to 66 dB.
- How long does it take for the AD9631/AD9632 to settle to 0.01% for a 2 V step? The settling time to 0.01% for a 2 V step is typically 16 ns.
