IF Stages are Going Digital for Both Analog and Digital Signals

Monolithic I/O chips provide critical functions for GSM and TIA communications

For many years after Maj. E.H. Armstrong conceived the super-heterodyne receiver architecture in the early decades of this century, the critical intermediate stage (IF) and the subsequent detection stage have been analog circuit functions. But with the increasing power and flexibility of digital circuitry—accompanied by faster, higher-resolution converters—even these stages are being implemented digitally, for both analog and digital signals. Read full article



Bill Schweber