●The OPAx22x series operational amplifiers combine low noise and wide bandwidth with high precision to make them the ideal choice for applications requiring both AC and precision DC performance.

●The OPAx227 is unity-gain stable and features high slew rate (2.3V/µs) and wide bandwidth (8MHz). The OPAx228 is optimized 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 OPAx227 and OPAx228 series operational amplifiers are ideal for professional audio equipment. In addition, low quiescent current and low cost make them ideal for portable applications requiring high precision.

●The OPAx227 and OPAx228 series operational amplifiers are pin-for-pin replacements for the industry standard OP-27 and OP-37 with substantial improvements across the board. The dual and quad versions are available for space savings and per channel cost reduction.

●The OPAx227, OPAx228, are available in DIP-8 and SO-8 packages. The OPA4227 and OPA4228 are available in DIP-14 and SO-14 packages with standard pin configurations. Operation is specified from –40°C to 85°C.

● Low Noise: 3nV/√Hz

● Wide Bandwidth:

● OPA227: 8 MHz, 2.3 V/µs

● OPA228: 33 MHz, 10 V/µs

● Settling Time: 5 µs

●(Significant Improvement Over OP-27)

● High CMRR: 138 dB

● High Open-loop Gain: 160 dB

● Low Input Bias Current: 10 nA Maximum

● Low Offset Voltage: 75 µV Maximum

● Wide Supply Range: ±2.5 V to ±18 V

● OPA227 Replaces OP-27, LT1007, MAX427