TriQuint unveils modulator driver, TIA amplifiers, and filter products for optical networking, CATV applications

April 21, 2004 Hillsboro, OR, and Richardson, TX -- TriQuint Semiconductor Inc. has introduced a new round of modulator drivers, amplifiers, and filter products designed to meet the needs of optical networking manufacturers and the cable TV industry. According to the company, the products set new performance standards, surpassing competing solution parameters.

April 21, 2004 Hillsboro, OR, and Richardson, TX -- TriQuint Semiconductor Inc. has introduced a new round of modulator drivers, amplifiers, and filter products designed to meet the needs of optical networking manufacturers and the cable TV industry. According to the company, the products set new performance standards, surpassing competing solution parameters.

• The TGA4819-SL is a large-signal linear modulator driver amplifier for high-speed optical networking applications. Offering more than twice the gain (20 dB) of typical linear driver solutions and 20 dB of AGC range, the TGA4819-SL is ideally suited for use in metro and long haul transponders as well as line cards, says the company. The TGA4819-SL has demonstrated the capability to deliver 10 Vpp while maintaining output harmonic levels near -30 dBc for a 2-GHz fundamental.

The TGA4819-SL is the latest in a series of efficient TriQuint surface mount modulator drivers providing improved electrical and optical eyes. The surface mount Land Grid Array (LGA) packaged product consists of a high performance wideband amplifier with on-chip power detector, plus off-chip bias circuitry and decoupling capacitors. The TGA4819-SL handles bit rates through 11.2 Gbits/sec for optical Non-Return-to-Zero (NRZ) applications.

• The new TGA4817 is a 10-Gbit/sec transimpedance amplifier (TIA) ideally suited for receive optical sub-assembly (ROSA) and metro optical network applications, as well as other OC-192/STM-64 fiber-optic system needs. Its circuitry uses a proprietary design technique to simultaneously achieve improved sensitivity and optical overload performance. The TGA4817 provides over 6000 Ohms of differential transimpedance and 9-GHz bandwidth at 230-mW power dissipation from a single +3.3-V supply. The TGA4817 has demonstrated greater than -20 dBm sensitivity in testing and an optical overload in excess of plus 2.5 dBm (less than 10e-12 BER, 9.95 Gbits/sec, 2 to the 31-1 PRBS).

• The TGB2010 represents a series of low reflection Bessel low pass filters for high-speed optical networking applications in a range of 6- to 11-GHz cutoff frequencies (available in 1-GHz steps). The TGB2010 series offers better return loss, less group delay variation, and a smaller footprint than competing filters, say Triquint representatives. Insertion loss and group delay for each filter matches an ideal third order Bessel filter, yet is also matched to 50 Ohms, thus eliminating the need for additional components for multiple reflection management. The TGB2010 series chip size is less than 0.25- by 0.25-mm allowing for easy insertion into multi-chip modules.

• The TGA2803 is a Gain Block/Transimpedance Amplifier for CATV distribution systems. The TGA2803 addresses many of the stringent performance requirements of CATV systems, including low distortions (CSO, CTB less than -70 dBc at 40dBmV output), high gain (20 dB), wide bandwidth (40 MHz-1 GHz), and low input referred noise (5pA/rtHz typical). The 75-ohm output TOI is nominally greater than 46 dBm with NF 1.5 dB. The TGA2803 is operated self-biased (single supply of +8V) and is available in a standard 4- by 4-mm MLP (Micro-Leadframe Package). The TGA2803 is 100% DC and RF tested to ensure performance compliance.

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