Product category:
Analogue and Mixed Signal ICs
News Release from: Inphi Corp | Subject: 1348TA and 1349TA
Edited by the Electronicstalk Editorial
Team on 02 March 2006
Transimpedance amps meet new 10Gbit/s
specs
Integrated linear transimpedance amplifiers operate at datarates up to 11.3Gbit/s, and can amplify input currents over the entire dynamic range required by the IEEE 10GBase-LRM standard.
Expanding its product portfolio for the high-performance telecommunications and datacommunications markets, Inphi Corporation has announced the 1348TA and 1349TA integrated linear transimpedance amplifier with automatic gain control These TIAs operate at datarates up to 11.3Gbit/s, and can amplify input currents over the entire dynamic range required by the upcoming IEEE 10GBase-LRM standard, with extremely low - less than 5% - total harmonic distortion (THD)
This article was originally published on Electronicstalk on 13 Oct 2004 at 8.00am (UK)
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The 1348TA is intended for TO-can receivers while the 1349TA targets butterfly receivers.
The 1348TA and 1349TA are the only linear TIAs available that leverage through-wafer via (TWV) technology.
This unique feature simplifies the internal package assembly by eliminating ground bond wires and reducing the number of bypass caps.
More importantly, TWVs enhance optical receiver performance by maintaining a flat gain versus frequency profile, increasing the output return loss and decreasing cross talk and jitter.
"Inphi continues to drive the industry's price/performance standards for TIA in the optical market", said Kevin Nary, Vice President of Engineering at Inphi Corporation.
"Our close relationship with customers ensures that devices like the 1348TA and 1349TA meet the challenges they face in design, performance and manufacturability".
"With Inphi's wide array of complementary building blocks, optical module designers can create better performing solutions at competitive prices, and bring them to market quickly".
"LRM-based optical modules are poised to enable mass deployment of 10 gigabit Ethernet in the enterprise backbone", said Babak Nabili, Director of Marketing at Scintera Networks.
"Availability of linear TIAs is a key element to enable the implementation of these cost-effective modules".
In AGC mode the 1348TA/1349TA gain is set internally through a peak detector that automatically adjusts gain (200ohm to 7kohm) keeping the output signal linear over the dynamic range.
In external gain control mode, the voltage applied at a control pad determines the gain.
Both devices include an integrated feedback circuit that controls the DC offset and maintains 50% eye crossing.
In addition, the eye crossing can be externally adjusted through an offset pad, DCA.
The 1348TA/1349TA have a small-signal bandwidth greater than 8GHz as well as an output return loss of greater than 8dB, up to 12GHz.
The TIA/AGC operates from a single 3.3V power supply with low power consumption of 200mW.
Samples are available immediately with volume production to begin in Q2 2006.
The parts are expected to cost $19.00 per unit in small volume.
Both parts are available in die form.
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