High Precision, Low Noise OPERATIONAL AMPLIFIERS
The OPA227 and OPA228 series operational amplifiers combine low noise, wide bandwidth, and high precision. The OPA227 is unity‑gain stable with an 8 MHz gain‑bandwidth product and 2.3 V/µs slew rate, while the OPA228 offers a 33 MHz gain‑bandwidth product and 10 V/µs slew rate for higher‑speed applications.
Both families are available in DIP‑8, SO‑8, DIP‑14 and SO‑14 packages and operate from –40 °C to +85 °C. They replace legacy OP‑27 and OP‑37 devices, providing improved performance for data‑acquisition, telecom, audio, and instrumentation designs.
| Supply Voltage Range (VS) | ±5 V to ±15 V |
|---|---|
| Operating Supply Voltage Range | ±2.5 V to ±18 V |
| Slew Rate | 2.3 V/µs (OPA227), 10 V/µs (OPA228) |
| Input Bias Current | ±2.5 nA to ±10 nA |
| Common‑Mode Rejection Ratio (CMRR) | 138 dB |
| Operating Temperature Range | –40 °C to +85 °C |
The devices operate from –40 °C up to +85 °C.