21 October 2010


TriQuint launches CATV amplifier for ONU, EoC applications

At this week’s SCTE Cable-Tec Expo 2010 in New Orleans (20–22 October), RF component maker and foundry services provider TriQuint Semiconductor Inc of Hillsboro, OR, USA is launching the TAT7457 device, a highly flexible, single-ended cable television (CATV) amplifier operating at frequencies from DC to 2000MHz such as RF-over-glass (RFoG) and emerging subscriber/premises applications, including optical network units (ONU), Ethernet over Coax (EoC) distribution and a variety of existing and emerging home amplifier designs.

The TAT7457 is suited to cost-sensitive CATV applications, since it provides 19dB gain (typical) yet, when an off-chip external feedback resistor is added, it can also provide variable gain adjustment, trading off the typical current of 120mA (at 5V), suiting home network amplification requirements.

Picture: TriQuint's TAT7457.

Also, it offers higher gain, superior distortion and better return loss compared to incumbent 16dB amplifiers, TriQuint claims. The balance of low distortion and noise figure (<2dB to 1000MHz) provides a solution for a wide range of broadband amplifiers used in CATV applications such as optical receivers and low-noise front ends. An internal bias circuit mitigates the effect of temperature and process variation.

“Our newest device, TAT7457, offers the flexibility that engineers haven’t found in other home network products at a very cost-competitive price point,” reckons CATV/FTTH product marketing manager Brian Bauer. Pricing is below $0.45/each in quantities over 100,000 units.

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