The document describes the features and characteristics of high precision, low noise operational amplifiers, including low noise, wide bandwidth, fast settling time, high CMRR, high open-loop gain, low input bias current, low offset voltage, wide supply range, etc. The OPA227 and OPA228 series op amps are suitable for applications such as data acquisition, telecom equipment, geophysical analysis, vibration analysis, spectral analysis, professional audio equipment, active filters, and power supply control.
The document describes the OPA227 and OPA228 series of operational amplifiers manufactured by Texas Instruments. These devices combine low noise performance with wide bandwidth to serve as ideal choices for applications requiring both AC and DC precision, such as professional audio equipment and data acquisition systems.
The OPA227 is a unity-gain stable amplifier featuring high slew rate and wide bandwidth, while the OPA228 is optimized for closed-loop gains of 5 or greater with higher speed. Both series are pin-for-pin replacements for industry standards like OP-27 and OP-37, available in dual and quad configurations.
| Open-Loop Voltage Gain | 160 dB |
|---|---|
| Input Bias Current | 10 nA max |
| Operating Temperature Range | -40°C to +85°C |
| Supply Voltage Range | +2.5V to +18V |
The OPA227 replaces OP-27, LT1007, and MAX427. The OPA228 replaces OP-37, LT1037, and MAX437.
The OPA227 has a wide bandwidth of 8MHz.
The OPA228 is optimized for closed-loop gains of 5 or greater.