FEATURES
D Optimized for CDMA2000−1X and UMTS D Up to 12 UMTS or 24 CDMA2000 Downconverter and Upconverter Channels D Mixed CDMA2000−1X and UMTS Operation D DDC Input and DUC Output Rates to 125 MSPS D Any DDC Can Connect to Any of Four Input Ports 1 DESCRIPTION
D Any DUC Can Sum into Any of Four Output Ports D Real/Complex DDC Inputs and DUC Outputs D Programmable AGC on DDC Outputs D Rx Filtering: 6 Stage CIC, 48 Tap CFIR, 64 Tap PFIR D Tx Filtering: 6 Stage CIC, 47 Tap CFIR, 63 Tap PFIR D 115-dB SFDR D 16-Bit DDC Inputs, 18-Bit DUC Outputs D 1.5-V Core, 3.3-V I/O The GC5316 can also support a combination of CDMA and UMTS channels. The DDC and DUC channels are independent and operate simultaneously. The chip is ideal for cellular base transceiver systems where a large number of digital radio channels are required. Each of the 24 CDMA (or 12 UMTS) channels can operate independently. On the DDC side there are four 16 bit input ports that can accept real or complex input data. The input ports are driven with parallel data, typically from an analog-to-digital converter.
Texas Instruments
