View ad647 datasheet:

Ultralow Drift, a Dual BiFET Op Amp AD647 FEATURES Low Offset Voltage Drift Matched Offset Voltage Matched Offset Voltage Over Temperature Matched Bias Currents Crosstalk: –124 dB at 1 kHz Low Bias Current: 35 pA max Warmed Up Low Offset Voltage: 250 V max Low Input Voltage Noise: 2 V p-p High Open Loop Gain: 108 dB Low Quiescent Current: 2.8 mA max Low Total Harmonic Distortion Standard Dual Amplifier Pinout Available in Hermetic Metal Can Package, Hermetic Surface Mount (20-Pin LCC) and Chip Form MIL-STD-883B Processing Also Available Single Version Available: AD547 PRODUCT DESCRIPTION The AD647 is an ultralow drift, dual JFET amplifier that com- bines high performance and convenience in a single package. The AD647 uses the most advanced ion-implantation and laser