Product category: Analogue and Mixed Signal ICs
News Release from: Texas Instruments (April 2001-March 2006) | Subject: DAC5687
Edited by the Electronicstalk Editorial Team on 16 February 2005
Speedy DAC boosts
basestation channel density
A new high performance, dual-channel 500Msample/s digital-to-analogue convertor addresses the growing demands of wireless carriers for low noise floor and increased performance devices
Addressing the growing demands of wireless carriers for low noise floor and increased performance devices, Texas Instruments has released its next generation high performance, dual-channel 500Msample/s digital-to-analogue convertor (DAC). Featuring a greater level of built-in signal processing, the new DAC5687 not only reduces noise, but also reduces radio frequency design requirements and basestation costs.
This article was originally published on Electronicstalk on 16 February 2005 at 8.00am (UK)
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The DAC5687 offers optimised gain, phase and offset control features for direct up-conversion architectures using IQ modulators in 3G basestations.
This 500Msample/s device also supports today's 3G clock rates, including the more popular 491.52MHz.
As a result, OEMs using the DAC5687 will find that this solution allows them to easily adapt new and emerging 3G standards, as well as soft modem and software defined radio initiatives, without rebuilding their systems.
The DAC5687 delivers a signal-to-noise-ratio (SNR) greater than 75dBFS and 3rd order intermodulation (IMD3) greater than 81dBc while allowing multi-carrier systems to operate with higher output power.
Additionally, dissipating only 700mW at 500Msample/s, the DAC5687 also improves system reliability and enables higher basestation channel density.
This new addition to TI's family of digital-to-analogue convertors features flexible modes of operation and is pin compatible with the prior generation DAC5686 thus simplifying system upgrades.
'TI continues to provide products that meet 3G basestation manufacturers' growing need for flexible, higher performance and lower power analogue parts', said Mike Walker, Manager of TI's High Speed DAC Group.
'With the DAC5687, TI is pleased to expand it's offerings with a new device that meets these critical needs while enabling manufacturers to more easily adapt to new and emerging standards'.
For developers using the DAC5687, TI provides the DAC5687EVM evaluation module for easy integration of the device into wireless infrastructure basestations and other target applications.
Sample units of the DAC5687 are available now.
Production units will be available in April 2005 at a cost of $22.50 per 1000 units.
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