Baseband Analog Front End

order online premarin TangoTec’s GAMLA™ Baseband Analog Front End (AFE) is based on the ITU-T (G.9960, G.9963 and G.9964) standard which supports blazing speeds o f u p to 2Gbps for IP entertainment networking over the powerline, coax and phoneline. The GAMLA™ is an AFE chip with advanced communication solution containing Rx Programmable Gain Amplifier (PGA), 12 bits Analog to Digital Converter (ADC), 12 bits Digital to Analog Converter (DAC). For Baseband applications (PowerLine, PhoneLine and Coax), the GAMLA™ AFE includes an integrated Line Driver. The GAMLA™ AFE provides raw throughput data of up to 2 Gbps.

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  • ITU-T (G.9960/G.9963/G.9964) compliant
  • Powerline, Coax & Twisted Pair mediums
  • Baseband - Operating frequency 0-200 MHz
  • Supports Annex F - Plastic Optical Fiber (PoF)
  • 25, 50, 100 and 200MHz Bandplans supporting throughput of up to 2Gbps
  • Integrated Line Driver
  • Single Reference Clock
  • 12 bits DAC @500MSPS
  • 12 bits ADC @500MSPS
  • Low noise
  • Up to +20dBm output Power
  • Programmable gain for Tx and Rx (PGA)
  • Variable Gain Amplifier supports 60 dB control range
  • Low power consumption in Sleep Mode operation
  • Extended temperature range: -40°C to +85°C
  • Green Standard (ROHS) Compliant

Tx Analog Front End The Tx of the GAMLA™ AFE includes a Digital to Analog Converter (DAC), Low Pass Filter (LPF) and Programmable Gain Amplifier (PGA). The LPF cutoff frequency is set slightly above 200MHz to attenuate noise coming from the DAC, commutation frequency and its harmonics. The Tx PGA provides for programmable power control, followed by the level converter and integrated Line Driver. The Tx PGA provides voltage gain and digital gain control for the Tx signal between the Tx LPF and Tx Line Driver stages. The Tx PGA supports 30 dB of gain control, in 2 dB increments.

Rx Analog Front End The Rx part of the GAMLA™ AFE includes an external Bandpass filter and Variable Gain Amplifier (VGA). The Rx VGA gain is automatically controlled by the Automatic Gain Control (AGC) logic from the MAC. The AGC controls the AFE Rx gain to provide an optimum signal level to the Analog to Digital Converter (ADC). The Rx VGA provides low-noise VGA with a digital gain control of the Rx signal from the input stage. The Rx VGA provides 60 dB of gain control range, in 1 dB increments. The primary requirement of the Rx VGA is to provide the maximum signal-to-noise ratio possible at the ADC input. The system AGC through firmware in the MAC/PHY selects the optimum Rx gain setting to provide the highest input voltage to the ADC without clipping on signal peaks.