TriAccess Technologies unveils RFoG amplifier

JULY 10, 2009 -- The TAT6254D uses TriAccess's transimpedance amplifier (TIA) technology in a two-stage single-chip implementation.

JULY 10, 2009 -- TriAccess Technologies (search Lightwave for TriAccess) has announced the TAT6254D, a new amplifier for RF over glass (RFoG) based fiber access networks. The TAT6254D uses TriAccess's transimpedance amplifier (TIA) technology in a two-stage single-chip implementation. The TAT6254D is in mass production and is currently available with "standard" product lead times.

The TriAccess TAT6254D is engineered to incorporate all the downstream receiver requirements for RFoG services, providing a single-chip approach for residential optical network units (R-ONUs). The integration of TIA and output stage amplification for RFoG specific levels enables a highly economic device, the company asserts. In addition, the dual TIA placement onto a single die assures consistent, manufacturing-repeatable CSO performance and excellent noise, TriAccess adds.

"The TAT6254D's low noise and high gain performance optimizes the optical input range for a balance of low cost equipment and full 20-km downstream performance," said Brian Bauer, TriAccess Technologies vice president of marketing. "The accompanying automated gain control -- or AGC -- reference circuit provides simple, highly cost-effective gain control solutions."

"Subscribers continue to demand more services which require cable operators and MSOs to enhance their networks to keep current subscribers and win new customers," said Chris Day, TriAccess Technologies president and CTO. "The demarcation point into the home is the critical link to ensure a consistent signal that maximizes the value of the FTTH network. The TAT6254D amplifier provides RF services for cable operators using RFoG/DOCSIS, as well as those choosing to deploy other PON architectures."

Key features of the TAT6254D include:


  • 30 dB-gain, single-amplifier-chip device, full 50-1002 MHz
  • supports of both analog and all-digital modes
  • -6 to +1 dBm optical input range
  • support of both optical and RF AGC gain control methods
  • better than 18 dB return loss
  • up to 20 dBmV/ch RF output
  • 5- and 12-V powering options
  • better than -58 dBc composite second order and composite triple beat distortion.

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