The AFE840x is a multichannel communications signal processor that provides analog-to-digital
conversion and digital downconversion optimized for cellular base transceiver systems. The AFE8405 and
AFE8406 both support UMTS, CDMA-1X and TD-SCDMA air-interface cellular standards.
The AFE8405 provides up to 8 UMTS digital downconverter channels (DDC), 16 CDMA DDCs, or 16
TD-SCDMA DDCs. The DDC channels are independent and operate simultaneously. The AFE8405 has
two input ports: one is hardwired to an internal 14-bit analog-to-digital converter and the other is a 16-bit
digital input. Each DDC channel can be programmed to accept data from any one of the two input ports.
The AFE8406 provides up to 8 UMTS digital downconverter channels (DDC), 16 CDMA DDCs, or 16
TD-SCDMA DDCs. The DDC channels are independent and operate simultaneously. The AFE8406 has
four input ports: two are hardwired to internal 14-bit analog-to-digital converters and two are 16-bit digital
inputs. Each DDC channel can be programmed to accept data from any one of the four input ports.