Overview
The OP249GP, produced by Analog Devices Inc., is a high-speed, precision dual JFET operational amplifier. It is designed to outperform other available dual amplifiers by offering superior speed combined with excellent DC performance. The OP249GP features ultrahigh open-loop gain, low offset voltage, and superb gain linearity, making it the industry’s first true precision, dual high-speed amplifier. This amplifier is particularly suited for applications requiring fast settling times and low distortion, such as high-speed bipolar D/A and A/D converters, professional audio, active filters, and servo systems.
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 | 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 | RL = 2 kΩ, CL = 50 pF | 18 | 22 | V/µs | |
| Settling Time | to 0.01% | < 1.2 µs | µs |
Key Features
- High-Speed Operation: The OP249GP boasts a slew rate of 22 V/µs typical and a fast settling time of less than 1.2 µs to 0.01%, making it ideal for high-speed applications.
- Low Offset Voltage: With a typical offset voltage of 0.75 mV and low offset stability, the OP249GP ensures high precision in DC applications.
- Ultrahigh Open-Loop Gain: The amplifier features an open-loop gain of 1 kV/mV minimum, ensuring high gain accuracy even in high closed-loop gain applications.
- Symmetrical Slew Rate: The OP249GP maintains a symmetrical slew rate even when driving large loads, such as 600 Ω or 200 pF of capacitance, which is beneficial for professional audio and other high-fidelity applications.
- Low Distortion: The amplifier exhibits ultralow distortion, making it suitable for applications requiring high signal integrity, such as active filters and audio amplifiers.
Applications
- High-Speed Bipolar D/A and A/D Converters: The OP249GP is ideal for fast digital-to-analog and analog-to-digital converter applications due to its fast settling time and low offset voltage.
- Professional Audio Amplifiers: Its symmetrical slew rate and low distortion make it suitable for professional audio applications.
- Active Filters: The amplifier’s high speed and low distortion characteristics are beneficial for active filter designs.
- High-Speed Integrators and Servo Systems: The OP249GP’s fast settling time and high precision make it a good choice for high-speed integrators and servo systems.
- Input Buffer for A/D Converters: It serves as an excellent input buffer for analog-to-digital converters, enhancing the accuracy of the conversion process.
Q & A
- What is the typical slew rate of the OP249GP?
The typical slew rate of the OP249GP is 22 V/µs.
- What is the settling time of the OP249GP to 0.01%?
The settling time of the OP249GP to 0.01% is less than 1.2 µs.
- What is the typical offset voltage of the OP249GP?
The typical offset voltage of the OP249GP is 0.75 mV.
- What is the common-mode rejection ratio (CMR) of the OP249GP?
The CMR of the OP249GP is 80 dB to 90 dB.
- What are the typical applications of the OP249GP?
The OP249GP is typically used in high-speed bipolar D/A and A/D converters, professional audio amplifiers, active filters, high-speed integrators, and servo systems.
- What is the power-supply rejection ratio (PSRR) of the OP249GP?
The PSRR of the OP249GP is 12 µV/V to 50 µV/V.
- What is the large signal voltage gain of the OP249GP?
The large signal voltage gain of the OP249GP is 1000 V/mV to 1400 V/mV.
- What is the input bias current of the OP249GP?
The input bias current of the OP249GP is 30 pA to 75 pA.
- What is the input offset current of the OP249GP?
The input offset current of the OP249GP is 6 pA to 25 pA.
- What is the supply current of the OP249GP?
The supply current of the OP249GP is 5.6 mA to 7.0 mA.
