OPA4228

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community OPA227, OPA2227, OPA4227 OPA228, OPA2228, OPA4228 SBOS110B – MAY 1998 – REVISED JUNE 2015 OPAx22x High Precision, Low Noise Operational Amplifiers 1 Features 1 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 OPA228 Replaces OP-37, LT1037, MAX437 Single, Dual, and Quad Versions 2 Applications Data Acquisition Telecom Equipment Geophysical Analysis Vibration Analysis Spectral Analysis Professional Audio Equipment Active Filters Power Supply Controls 100k Input Referred Noise INPUT VOLTAGE AND CURRENT NOISE SPECTRAL DENSITY vs FREQUENCY 10k 1k Current Noise 3 Description 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 pro...