A battery-powered 8-channel wireless FM IC for biopotential recording applications

An 8-channel microsystem for transmission of 7 input biopotentials using wireless FM in the band of 94 to 98 MHz requires only 3 off-chip components. The 4.84 mm/sup 2/ IC is fabricated using a 1.5 /spl mu/m 2P2M CMOS process, dissipates /spl sim/2.05 mW at 3 V, and wirelessly reconstructs an 800 /spl mu/V neural spike over a distance of /spl sim/13 cm with an I/O correlation coefficient of /spl sim/96%.