The ADA4937 is available in a Pb-free, 3 mm × 3 mm 16-lead LFCSP (ADA4937-1, single) or a Pb-free, 4 mm × 4 mm 24-lead LFCSP (ADA4937-2, dual). The pinout has been optimized to facilitate PCB layout and minimize distortion. The ADA4937-1 is specified to operate over the −40°C to +105°C temperature range, and the ADA4937-2 operates over −40°C to +85°C; both operate at 3.3 V and 5 V supplies.