Precision Instrumentation Amplifier AD8221 FEATURESCONNECTION DIAGRAMEasy to use1–IN8+VAvailable in space-saving MSOPSR27VGain set with 1 external resistor (gain range 1 to 1000)GOUTR36REFWide power supply range: ±2.3 V to ±18 VG+IN45–V 1 0 Temperature range for specified performance:SAD8221 -0 9 4 1 3 −40°C to +85°CTOP VIEW 0 Operational up to 125°C 1
Figure 1. Excellent AC specifications12080 dB minimum CMRR to 10 kHz (G = 1)110825 kHz, –3 dB bandwidth (G = 1)AD82212 V/µs slew rate100Low noise90)8 nV/√Hz, @ 1 kHz, maximum input voltage noiseB (dCOMPETITOR 10.25 µV p-p input noise (0.1 Hz to 10 Hz)R80High accuracy dc performance (AD8221BR)MR C7090 dB minimum CMRR (G = 1) 25 µV maximum input offset voltage600.3 µV/°C maximum input offset driftCOMPETITOR 2500.4 nA maximum input bias current40 2 101001k10k100k 0 APPLICATIONS -0 9 4 1 FREQUENCY (Hz) 3 0 Weigh scales Figure 2. Typical CMRR vs. Frequency for G = 1 Industrial process controlsBridge amplifiers Precision data acquisition systems Low voltage offset, low offset drift, low gain drift, high gain Medical instrumentation accuracy, and high CMRR make this part an excellent choice Strain gages in applications that demand the best dc performance possible, Transducer interfaces such as bridge signal conditioning.