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The OPAx22x family of operational amplifiers combines low noise, wide bandwidth, and high precision, making them ideal for applications requiring both AC and precision DC performance.

The OPAx227 is unity gain stable with high slew rate (2.3V/µs) and wide bandwidth (8MHz). The OPAx228 is optimized for closed-loop gain of 5x or greater, and offers higher speed with 10V/µs slew rate and 33MHz bandwidth.

The OPAx227 and OPAx228 series of operational amplifiers are ideal for professional audio equipment. Additionally, low quiescent current and low cost make them ideal for portable applications where high precision is critical.

The OPAx227 and OPAx228 families of operational amplifiers are pin-to-pin replacements for the industry standard OP-27 and OP-37 with significant improvements across the board. To save space and reduce cost per channel, two- and four-channel versions are also available.

The OPAx227 and 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 pinout. The rated operating temperature range is –40°C to 85°C.

characteristic

Low noise: 3nV/√Hz

Wide Bandwidth:

OPA227: 8MHz, 2.3V/μs

OPA228: 33MHz, 10V/μs

Settling time: 5μs

(significant improvement over OP-27)

High CMRR: 138dB

High open loop gain: 160dB

Low Input Bias Current: 10nA (max)

Low offset voltage: 75μV (max)

Wide supply voltage range: ±2.5V to ±18V

OPA227 replaces OP-27, LT1007, MAX427

OPA228 replaces OP-37, LT1037, MAX437

Single-, dual- and quad-channel versions