Precision High-Speed Difet Operational Amplifier
The OPA627 Difet operational amplifier provides a new level of performance in a precision FET op amp. When compared to the popular OPA111 op amp, the OPA627 has lower noise, lower offset voltage, and much higher speed. It is useful in a broad range of precision and high speed analog circuitry. The OPA627 is fabricated on a high-speed, dielectrically-isolated complementary NPN/PNP process. It operates over a wide range of power supply voltage +/-4.5V to +/-18V. Laser-trimmed Difet input circuitry provides high accuracy and low-noise performance comparable with the best bipolar-input op amps. High frequency complementary transistors allow increased circuit bandwidth, attaining dynamic performance not possible with previous precision FET op amps. The OPA627 is unity-gain stable.
Difet fabrication achieves extremely low input bias currents without compromising input voltage noise performance. Low input bias current is maintained over a wide input common-mode voltage range with unique cascode circuitry.
* Very low noise: 4.5nV/vHz at 10kHz
* Fast settling time: 550ns to 0.01%
* Low Vos: 100uV max.
* Low drift: 0.8µV/°C max.
* Low Ib: 5pA max.
* Unity-gain stable
* Precision instrumentation
* Fast data acquisition
* DAC output amplifier
* Sonar, ultrasound
* High-impedance sensor amps
* High-performance audio circuitry
* Active filters