The OPA227 and OPA228 series op amps combine low noise and wide bandwidth with high precision to make them the ideal choice for applications requiring both ac and preci- sion dc performance. The OPA227 is unity-gain stable and features high slew rate (2.3V/µs) and wide bandwidth (8MHz). The OPA228 is opti- mized for closed-loop gains of 5 or greater, and offers higher speed with a slew rate of 10V/µs and a bandwidth of 33MHz. The OPA227 and OPA228 series op amps are ideal for professional audio equipment. In addition, low quiescent current and low cost make them ideal for portable applica- tions requiring high precision. The OPA227 and OPA228 series op amps are pin-for-pin replacements for the industry standard OP-27 and OP-37 with substantial improvements across the board. The dual-channel version offers higher output current and lower distortion.
The document describes the OPA227 and OPA228 series of operational amplifiers, which combine low noise with wide bandwidth for applications requiring both AC and precision DC performance. The OPA227 features a slew rate of 2.3V/µs and a bandwidth of 8MHz, while the OPA228 offers higher speed with a slew rate of 10V/µs and a bandwidth of 33MHz.
| Input Voltage Noise Density (1kHz) | 3 nV/√Hz |
|---|---|
| Gain Bandwidth Product (OPA227) | 8 MHz |
| Slew Rate (OPA227) | 2.3 V/µs |
| Gain Bandwidth Product (OPA228) | 33 MHz |
| Slew Rate (OPA228) | 10 V/µs |
| Operating Temperature Range | -40°C to +85°C |
The OPA227 is a pin-for-pin replacement for the industry standard OP-27.
The OPA228 is optimized for closed-loop gains of 5 or greater.