Overview
The AD9631ARZ-REEL, produced by Analog Devices Inc., is a high-speed, wide bandwidth operational amplifier. This device is part of the AD9631/AD9632 series, which combines the best characteristics of both current feedback and voltage feedback amplifiers. The AD9631 is specifically designed to be unity gain stable, making it highly versatile for various applications. It features a proprietary design architecture that ensures exceptional settling time, bandwidth, and low distortion, making it ideal for driving flash and high-resolution ADCs, as well as other demanding applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | ±3.0 | - | ±6.0 | V |
| Quiescent Current | 16 | 17 | 18 | mA |
| Output Voltage Range | ±3.2 | ±3.9 | - | V |
| Output Current | - | - | 70 | mA |
| Slew Rate | - | 1300 | - | V/μs |
| Settling Time (0.01%, 2V step) | - | 16 | - | ns |
| Small Signal Bandwidth | - | 320 | - | MHz |
| Large Signal Bandwidth | - | 175 | - | MHz |
| Input Resistance | 500 | - | - | kΩ |
| Input Capacitance | 1.2 | - | - | pF |
| Operating Temperature Range | -40 | - | 85 | °C |
Key Features
- High Speed and Wide Bandwidth: The AD9631 features a small signal bandwidth of 320 MHz and a large signal bandwidth of 175 MHz, making it suitable for high-speed applications.
- Low Distortion: Achieves ultralow distortion, with harmonic distortion as low as −72 dBc at 20 MHz.
- Fast Settling Time: Settles to 0.01% in 16 ns for a 2V step, ensuring rapid response times.
- Flexible Supply Operation: Operates with supply voltages ranging from ±3V to ±6V.
- High Slew Rate: A slew rate of 1300 V/μs enhances the amplifier's ability to handle high-frequency signals.
- Unity Gain Stability: The AD9631 is stable at unity gain, while the AD9632 is stable at gains of 2 or greater.
- High Impedance Inputs: Balanced high impedance inputs allow for maximum flexibility in designing active filters.
Applications
- ADC Input Drivers: Ideal for driving flash and high-resolution ADCs due to its high speed and low distortion.
- Differential Amplifiers: Suitable for differential amplifier configurations.
- IF/RF Amplifiers: Used in intermediate frequency and radio frequency applications.
- Pulse Amplifiers: Excellent for amplifying high-speed pulses.
- Professional Video and DAC Current to Voltage Conversion: Applicable in professional video and DAC current to voltage conversion scenarios.
- Baseband and Video Communications: Used in baseband and video communication systems.
- Active Filters/Integrators/Log Amps: Suitable for designing active filters, integrators, and logarithmic amplifiers.
Q & A
- What is the small signal bandwidth of the AD9631?
The small signal bandwidth of the AD9631 is 320 MHz.
- What is the slew rate of the AD9631?
The slew rate of the AD9631 is 1300 V/μs.
- What is the settling time of the AD9631 to 0.01% for a 2V step?
The settling time of the AD9631 to 0.01% for a 2V step is 16 ns.
- What are the typical harmonic distortion levels of the AD9631 at different frequencies?
The AD9631 achieves −72 dBc at 20 MHz and −95 dBc at 5 MHz.
- What are the operating temperature ranges for the AD9631?
The operating temperature range for the AD9631 is −40°C to +85°C.
- What are the available package types for the AD9631?
The AD9631 is available in 8-Lead PDIP and 8-Lead SOIC packages.
- What is the quiescent current of the AD9631?
The quiescent current of the AD9631 is typically 17 mA.
- Is the AD9631 stable at unity gain?
Yes, the AD9631 is stable at unity gain, while the AD9632 is stable at gains of 2 or greater.
- What are some common applications of the AD9631?
The AD9631 is commonly used in ADC input drivers, differential amplifiers, IF/RF amplifiers, pulse amplifiers, professional video, and baseband and video communications.
- Is the AD9631 RoHS compliant?
Yes, the AD9631 is lead-free and RoHS compliant.
