Overview
The OP249AZ, produced by Analog Devices Inc., is a high-speed, precision dual JFET operational amplifier. It is designed to outperform other available dual amplifiers in terms of speed, precision, and overall performance. The OP249AZ is particularly suited for applications requiring high accuracy, low distortion, and fast settling times, making it an ideal choice for professional audio, active filters, high-speed integrators, servo systems, and buffer amplifiers.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | VCM = 0 V | 0.2 | 0.75 | 0.9 | mV |
| Offset Stability | 1.5 | µV/month | ||||
| Input Bias Current | IB | VCM = 0 V, TA = 25°C | 30 | 75 | 75 | pA |
| Input Offset Current | IOS | VCM = 0 V, TA = 25°C | 6 | 25 | 25 | pA |
| Input Voltage Range | IVR | ±11 | ±11 | ±11 | V | |
| Common-Mode Rejection Ratio | CMR | VCM = ±11 V | 80 | 90 | 90 | dB |
| Power-Supply Rejection Ratio | PSRR | VS = ± 4.5 V to ±18 V | 12 | 31.6 | 50 | µV/V |
| Large Signal Voltage Gain | AVO | VO = ±10 V, RL = 2 kΩ | 1000 | 1400 | 1200 | V/mV |
| Slew Rate | SR | 22 | V/µs | |||
| Settling Time (0.01%) | < 1.2 | µs |
Key Features
- High Speed: The OP249AZ features a high slew rate of 22 V/µs and a fast settling time of less than 1.2 µs to 0.01%, making it ideal for high-speed applications.
- Precision: It offers excellent dc performance with low offset voltage and high open-loop gain, ensuring high accuracy in high-resolution applications.
- Low Distortion: The amplifier exhibits ultralow distortion, which is beneficial for professional audio and other applications requiring high signal integrity.
- High Output Drive Capability: It can drive large loads such as 600 Ω or 200 pF of capacitance without significant degradation in performance.
- Temperature Stability: The OP249AZ has a stable performance over a wide temperature range, making it suitable for various environmental conditions.
Applications
- Professional Audio: Due to its low distortion and high slew rate, the OP249AZ is well-suited for professional audio applications.
- Active Filters: Its high speed and precision make it an excellent choice for active filter circuits.
- High-Speed Integrators: The amplifier's fast settling time and high slew rate are beneficial for high-speed integrator applications.
- Servo Systems: It is used in servo systems where high accuracy and fast response times are critical.
- Buffer Amplifiers: The OP249AZ can be used as a buffer amplifier due to its high output drive capability and low distortion.
Q & A
- What is the typical slew rate of the OP249AZ?
The typical slew rate of the OP249AZ is 22 V/µs.
- What is the settling time of the OP249AZ to 0.01% accuracy?
The settling time of the OP249AZ to 0.01% accuracy is less than 1.2 µs.
- What is the input bias current of the OP249AZ?
The input bias current of the OP249AZ is typically 75 pA.
- What is the common-mode rejection ratio (CMR) of the OP249AZ?
The CMR of the OP249AZ is typically 90 dB.
- What are some typical applications of the OP249AZ?
The OP249AZ is typically used in professional audio, active filters, high-speed integrators, servo systems, and buffer amplifiers.
- What is the temperature range for the OP249AZ?
The OP249AZ operates over a temperature range of −55°C to +125°C for the AZ package.
- How does the OP249AZ perform in terms of output drive capability?
The OP249AZ can drive large loads such as 600 Ω or 200 pF of capacitance without significant performance degradation.
- What is the power-supply rejection ratio (PSRR) of the OP249AZ?
The PSRR of the OP249AZ is typically 31.6 µV/V.
- Is the OP249AZ suitable for high-resolution CMOS DAC applications?
Yes, the OP249AZ is suitable for high-resolution CMOS DAC applications due to its excellent dc performance and high accuracy.
- Can the OP249AZ be used in single-supply configurations?
While the OP249AZ is typically used in dual-supply configurations, it can be adapted for single-supply use with appropriate circuit design.
