GC5018 8 channel wideband digital down converter with front end AGC | TI.com

GC5018 (LIFEBUY)

8 channel wideband digital down converter with front end AGC

Datasheet
 

Description

The GC5018 is a multi-channel communications signal processor that provides digital downconversion optimized for cellular base transceiver systems. The device supports UMTS, CDMA-1X and TD-SCDMA air interface cellular standards.

The chip 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 GC5018 has four 16-bit inputs. Each DDC channel can be programmed to accept data from any one (or two for complex input mode) of the four input ports.

Features

  • Four 16-Bit CMOS ADC Input Ports
  • Programmable Closed Loop VGA Control With
    6-Bit Outputs for Each ADC Input Port
  • Provide Received Total Wide Band Power (RTWP)
    Measurement for the Composite Power Across
    Carriers With Programmable Time Window for
    Measurement
  • 8 UMTS Digital Down Converter (DDC)
    Channels or 16 CDMA or 16 TD-SCDMA DDC
    Channels With Programmable 18 Bit Filter
    Coefficients
  • Each DDC channel includes
    • Real or Complex DDC Inputs
    • 115 dB SFDR NCO
    • UMTS Mode Rx Filtering: 6 Stage CIC (m=1 or 2),
      Up to 40 Tap CFIR, Up to 64 Tap PFIR
    • CDMA Mode Rx Filtering: 6 Stage CIC (m=1 or 2),
      Up to 64 Tap CFIR, Up to 64 Tap PFIR
    • Power Measurements
    • Final AGC
  • 1.5V Digital Core Supply, 3.3V Digital I/O Supply
  • 305 Ball Plastic BGA (19 mm × 19 mm) With 1.0 mm Pitch
  • Power Dissipation: 2.5W

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