Overview
The OP285GSZ, produced by Analog Devices Inc., is a dual 9 MHz precision operational amplifier. This device combines the slew rate and low power characteristics of a JFET amplifier with the precision, low noise, and low drift of a bipolar amplifier. The OP285GSZ features a unique Butler Amplifier front-end design, which integrates the accuracy and low noise performance of bipolar transistors with the speed of JFETs. This results in an amplifier with high slew rates, low offset voltage, and good noise performance at low supply currents, making it highly suitable for various high-performance applications.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS | - | - | 250 | µV | |
| Input Bias Current | IB | VCM = 0 V | 100 | 350 | nA | |
| Slew Rate | SR | - | - | 22 | V/µs | |
| Bandwidth | - | - | - | 9 | MHz | |
| Supply Current | ISY | - | - | 5 | mA | |
| Operating Temperature Range | - | - | -40 | - | 85 | °C |
| Supply Voltage Range | - | - | ±4.5 | - | ±22 | V |
| Package | - | - | - | - | 8-lead SOIC_N | - |
Key Features
- Low Offset Voltage: Laser-trimmed to less than 250 µV, ensuring high precision in dc-coupled or summing applications.
- Low Noise: 6 nV/√Hz, making it suitable for high-performance audio and instrumentation systems.
- High Slew Rate: 22 V/µs, enabling fast response times in various applications.
- Wide Bandwidth: 9 MHz, supporting high-speed signal processing.
- Low Supply Current: 5 mA, contributing to low power consumption.
- Low Offset Current: 2 nA, minimizing errors in signal amplification.
- Unity-Gain Stable: Ensures stable operation in unity-gain configurations.
- Frequency Compensation: Internally compensated to avoid oscillation.
Applications
- High-Performance Audio Systems: Suitable for dc-coupled audio applications due to its low noise and high slew rate.
- Active Filters: Ideal for building high-speed active filters.
- Fast Amplifiers: Used in applications requiring fast response times.
- Integrators: Suitable for integration circuits due to its precision and low drift.
- Instrumentation Amplifiers: Used in instrumentation systems requiring high accuracy and low noise.
- Ramp Generators and Bi-Quad Filters: Suitable for various high-speed instrumentation circuits.
Q & A
- What is the input offset voltage of the OP285GSZ?
The input offset voltage of the OP285GSZ is typically 250 µV.
- What is the slew rate of the OP285GSZ?
The slew rate of the OP285GSZ is 22 V/µs.
- What is the bandwidth of the OP285GSZ?
The bandwidth of the OP285GSZ is 9 MHz.
- What is the supply current of the OP285GSZ?
The supply current of the OP285GSZ is typically 5 mA.
- What is the operating temperature range of the OP285GSZ?
The operating temperature range of the OP285GSZ is -40°C to +85°C.
- What is the package type of the OP285GSZ?
The OP285GSZ is available in an 8-lead SOIC_N surface mount package.
- Is the OP285GSZ unity-gain stable?
Yes, the OP285GSZ is unity-gain stable.
- What are some common applications of the OP285GSZ?
The OP285GSZ is commonly used in high-performance audio systems, active filters, fast amplifiers, integrators, and instrumentation amplifiers.
- What is the noise performance of the OP285GSZ?
The OP285GSZ has a noise voltage of 6 nV/√Hz, making it suitable for high-performance applications).
- Does the OP285GSZ require frequency compensation?
No, the OP285GSZ is internally compensated to avoid oscillation).
