OP249GSZ-REEL7: High-Performance J-FET Operational Amplifier | Analog Devices Inc.
OP249GSZ-REEL7: High-Performance J-FET Operational Amplifier by Analog Devices Inc.
The OP249GSZ-REEL7 is a premium J-FET input operational amplifier from Analog Devices Inc., engineered to deliver exceptional performance in precision analog signal processing. This dual op-amp combines ultra-low input bias current, high input impedance, and wide bandwidth, making it a top choice for demanding applications in instrumentation, audio, and industrial systems. Below, we explore its features, technical specifications, and real-world applications in detail.
Why Choose the OP249GSZ-REEL7?
Designed for engineers who require uncompromising accuracy and speed, the OP249GSZ-REEL7 stands out with:
- Ultra-Low Input Bias Current: Just 30 pA minimizes signal distortion in high-impedance circuits.
- J-FET Input Stage: Delivers 10^12 input impedance for minimal loading effects.
- Wide Supply Range: Operates from 4.5V to 18V (dual supply) or 9V to 36V (single supply).
- High Speed: 22 V/ s slew rate and 4.7 MHz gain bandwidth for dynamic signal processing.
- Low Noise: 8 nV/ Hz at 1 kHz ensures clean amplification of sensitive signals.
Extended Technical Specifications
| Parameter | Value |
|---|---|
| Input Offset Voltage | 400 V (max) |
| Input Offset Current | 5 pA (typ) |
| Common-Mode Rejection Ratio (CMRR) | 100 dB (min) |
| Power Supply Rejection Ratio (PSRR) | 100 dB (min) |
| Output Current | 36 mA (per channel) |
| Package | 8-SOIC (3.9mm width) |
In-Depth Applications
1. Medical Instrumentation
Used in ECG amplifiers and blood glucose monitors where low noise and high CMRR are critical.
2. Professional Audio Equipment
Ideal for microphone preamps and equalizers due to its 0.0003% THD (Total Harmonic Distortion).
3. Industrial Sensor Interfaces
Accurately amplifies signals from RTDs, load cells, and pH sensors with 0.5 mV offset voltage stability.
4. Test & Measurement Systems
Enables high-accuracy data acquisition in oscilloscopes and spectrum analyzers.
Design Considerations
PCB Layout Tips:
- Use a star-ground configuration to minimize noise coupling.
- Place decoupling capacitors (0.1 F ceramic + 10 F tantalum) within 5mm of the supply pins.
Thermal Management: The 8-SOIC package dissipates up to 500 mW; ensure adequate airflow or heatsinking in high-temperature environments.
Competitive Advantages Over Alternatives
Compared to general-purpose op-amps like the TL072, the OP249GSZ-REEL7 offers:
- 5x Lower Input Bias Current (30 pA vs. 150 pA).
- 2x Faster Slew Rate (22 V/ s vs. 13 V/ s).
- Wider Temperature Range (-40 C to +85 C vs. 0 C to +70 C).
Where to Buy
Available through authorized distributors like Digi-Key, Mouser, and Analog Devices' eShop. Part Number: OP249GSZ-REEL7 (2500-unit tape/reel packaging).
Pro Tip: Request free samples on Analog Devices' website for prototype testing.
Final Thoughts
The OP249GSZ-REEL7 redefines precision in J-FET op-amps, offering unmatched performance for critical analog designs. Its blend of speed, accuracy, and versatility makes it a must-have for engineers tackling challenges in biomedical, audio, and industrial automation.
Ready to integrate this powerhouse into your design? Download the full datasheet today!