Product category:
Communications ICs (Wireless)
News Release from: Texas Instruments (April 2001-March 2006) | Subject: TRF3761
Edited by the Electronicstalk Editorial
Team on 24 October 2005
RF synthesiser delivers more reliable
systems
A new high performance radio frequency synthesiser maintains signal integrity for wireless infrastructure applications.
Texas Instruments has a new high performance radio frequency (RF) synthesiser that maintains signal integrity for wireless infrastructure applications The highly integrated TRF3761 RF synthesiser requires one-third of the board footprint compared with other modules, addressing manufacturer's growing demand for smaller, more cost-efficient basestation solutions
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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RF synthesisers are typically used as the local oscillator (LO) for RF devices such as mixers or quadrature modulators that enable transmission or reception at those particular frequencies.
In the past, basestation manufacturers used customised modules that integrated phase locked loop (PLL) devices with voltage controlled oscillators (VCOs), buffers and passive circuitry.
The TRF3761 eliminates the need for these modules by integrating their equivalent functionality into a single 6 x 6mm chip that delivers performance equal to more expensive and larger modules.
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"Our new RF product addresses basestation manufacturers' needs for high-integration to reduce board size, allowing our customers to design smaller basestations that provide enhanced features", said Nicolas Salamina, RF Infrastructure Product Line Manager at TI.
"TI's newest RF synthesiser eases manufacturability and delivers a more reliable system because of its small size and monolithic silicon solution".
The TRF3761 is available at an extended frequency range of 400MHz to 2.5GHz and supports various 3G wireless standards as well as 2G and 2.5G, while delivering infrastructure-class phase noise performance.
For example, at an output frequency of 1.9GHz, the TRF3761 delivers -138dBc/Hz phase noise when measured at a 600kHz offset, and noise floor of -160dBc/Hz when measured at a 10MHz offset.
When operating at an output frequency of 900MHz, the TRF3761 yields phase noise of -144dBc/Hz when measured at a 600kHz offset, and -160dBc when measured at a 10MHz offset.
The device continues to build on TI's RF portfolio for infrastructure applications such as quadrature modulators, the TRF3701/2 and synthesisers with the TRF3750.
TI also provides state-of-the-art signal chain solutions with high-speed amplifiers (THS4509, OPA847), high-speed digital-to-analogue convertors (DAC5687), digital up/down convertors (GC5016), crest factor reduction processors (GC1115) and high speed analogue-to-digital convertors (ADS5545).
For developers evaluating and designing with the TRF3761, TI provides an evaluation module (EVM), software package and documentation for easy testing.
Samples of the TRF3761 and the EVM are available today.
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