AD8628AUJZ-REEL7: High-Performance Zero-Drift Op-Amp | Analog Devices
AD8628AUJZ-REEL7: Ultimate Precision with Zero-Drift Technology
The AD8628AUJZ-REEL7 by Analog Devices Inc. redefines precision in operational amplifiers. This zero-drift op-amp delivers unmatched DC accuracy with an ultra-low input offset voltage of just 1 V and near-zero drift over time and temperature. Engineered for demanding applications, it combines rail-to-rail output, low power consumption (850 A), and a compact TSOT-23-5 package.
Why AD8628AUJZ-REEL7 Stands Out
- Zero-Drift Architecture: Auto-correction circuitry eliminates 1/f noise and drift
- Rail-to-Rail Output: Maximizes dynamic range with 5V supply capability
- 2.5MHz Bandwidth: Handles both DC precision and AC signal processing
- 30pA Input Bias Current: Ideal for high-impedance sensor interfaces
Deep Dive: Technical Superiority
The AD8628AUJZ-REEL7's patented zero-drift technology continuously calibrates input offset voltage, achieving performance metrics that surpass conventional amplifiers:
| Parameter | Value | Advantage |
|---|---|---|
| Input Offset Voltage | 1 V (max) | Enables microvolt-level measurements |
| Offset Drift | 0.005 V/ C | Stable across -40 C to +125 C |
| CMRR | 130dB | Rejects power supply noise |
| PSRR | 120dB | Maintains accuracy in noisy environments |
Application Spotlight
Medical Instrumentation
In ECG and EEG systems, the AD8628AUJZ-REEL7's low noise (8nV/ Hz at 1kHz) and zero-drift characteristics ensure accurate biosignal acquisition. Its 30mA output current can directly drive analog-to-digital converters.
Industrial Weigh Scales
The amplifier's 0.01% gain error and 0.5 V/ C drift make it perfect for strain gauge conditioning, delivering 24-bit accuracy without calibration.
Design Considerations
For optimal performance:
- Use 0.1 F ceramic bypass capacitors within 5mm of supply pins
- Implement guard rings for high-impedance (>1M ) inputs
- Keep thermal gradients symmetrical around the TSOT-23-5 package
Competitive Comparison
Versus traditional precision op-amps (e.g., OP07), the AD8628AUJZ-REEL7 offers:
- 10x better offset voltage stability
- 50% lower power consumption
- 90% smaller footprint
Purchasing Information
Available in 7" reel packaging (3,000 units/reel) with full RoHS compliance. Sample requests and volume pricing available through authorized distributors.
Conclusion
The AD8628AUJZ-REEL7 sets the new benchmark for precision analog design, combining Analog Devices' cutting-edge zero-drift technology with practical features for real-world applications. Its unparalleled DC performance makes it the go-to choice for engineers designing the next generation of measurement systems, medical devices, and industrial controls.