ITEM NAME:AD8221AR Precision Instrumentation Amplifier Module CMRR DC Adjustable Gain A8J2 AD8221AR Precision Instrumentation Amplifier Module CMRR DC Adjustable Gain A8J2 The AD8221AR is a gain programmable, high-performance instrumentation amplifier with the highest common mode rejection ratio (CMRR) relative to frequency in the industry. Low-voltage offset, low offset drift, low gain drift, high gain accuracy, and high common-mode rejection ratio make this device an excellent choice for applications requiring optimal dc performance, such as bridge signal.80 dB minimum CMRR to 10 kHz (G = 1);. 90 dB minimum CMRR (G = 1);. Programmable gain gives the user design flexibility. Through a resistor, gain can be set in the range of 1 to 1000. Gain set with 1 external resistor (gain range 1 to 1000);.