ADTL084ARZ-REEL7: High-Performance J-FET Quad Operational Amplifier | Analog Devices Inc.
ADTL084ARZ-REEL7: High-Performance Quad J-FET Operational Amplifier by Analog Devices
The ADTL084ARZ-REEL7 from Analog Devices Inc. represents the pinnacle of precision analog signal processing, combining J-FET technology with quad-channel integration for demanding applications. This comprehensive guide explores its technical advantages, real-world applications, and why it outperforms competing op-amps in critical parameters.
In-Depth Technical Analysis
J-FET Architecture Advantages
Unlike conventional bipolar op-amps, the J-FET input stage delivers:
- Ultra-Low Input Bias Current: 2pA (typical) enables accurate high-impedance sensor interfacing
- High Input Impedance: >10^12 minimizes loading effects
- Low Noise Density: 18nV/ Hz at 1kHz for sensitive measurements
Power Efficiency & Flexibility
The amplifier operates across an industry-leading 8V to 36V supply range ( 4V to 18V dual supply) with:
- 1.2mA/channel quiescent current
- 27mA output drive capability
- Rail-to-rail output swing (within 1.5V of supplies)
Dynamic Performance
| Parameter | Value | Advantage |
|---|---|---|
| Slew Rate | 20V/ s | Fast transient response |
| GBWP | 5MHz | Wide bandwidth for signal integrity |
| Settling Time | 300ns to 0.1% | Precision data acquisition |
Package & Reliability Features
The 14-pin SOIC package (3.9mm width) offers:
- Industrial temperature range (-40 C to +125 C)
- Moisture Sensitivity Level (MSL) 1 rating
- Pb-free and RoHS compliant construction
Application Circuits
Precision Instrumentation Example
When used in medical ECG front-ends:
- First stage: 1000x gain differential amplifier
- Second stage: Active filter with Q=0.707
- Output buffer for ADC driving
Audio Signal Chain Implementation
In professional audio mixers:
- Microphone preamplifier with 60dB gain
- Equalization stage with multiple feedback topology
- Line driver with <1% THD+N
Competitive Comparison
Versus TL084 family devices, the ADTL084ARZ-REEL7 provides:
- 30% lower input offset voltage
- 2x better power supply rejection ratio (100dB)
- Extended temperature range
Design Resources
Analog Devices provides:
- SPICE models for simulation
- Evaluation board layouts
- Thermal calculation tools
Purchasing Information
Available in 2500-unit reels (REEL7 packaging) with:
- 12-week lead time for standard orders
- Sample quantities accessible through ADI website
- Authorized distributor network support
For engineers requiring uncompromising performance in precision analog circuits, the ADTL084ARZ-REEL7 delivers unmatched combination of J-FET characteristics, quad-channel integration, and Analog Devices' quality assurance. Its parametric superiority makes it the preferred choice for mission-critical designs across industrial, medical, and audio applications.