Product category:
Communications ICs (Wireless)
News Release from: Renesas Technology Europe | Subject: R2A60281LG
Edited by the Electronicstalk Editorial
Team on 25 February 2008
Receiver handles multiple phone
frequencies
The R2A60281LG IC will facilitate the development of smaller and thinner handsets with support for global mobile telephony standards.
Renesas Technology has released the R2A60281LG, an ultra-compact 2G/3G dual-mode radio frequency (RF) transceiver IC that supports both 2G and 3G modes used in cellular communications The device integrates in a single chip most of the high-frequency signal processing functions required by mobile phone handsets
This article was originally published on Electronicstalk on 25 Sep 2008 at 8.00am (UK)
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The RF transceiver IC performs functions such as converting received high-frequency wireless signals to a lower frequency for use by the baseband processor.
It forms an essential part of the transceiver block of the mobile phone.
The R2A60281LG will facilitate the development of smaller and thinner handsets with support for global mobile telephony standards.
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The R2A60281LG integrates 2G (GPRS/EDGE) quad-band (850/900MHz/1.8/1.9GHz) and 3G (W-CDMA) quad-band (800MHz/1.5/1.7/2GHz) functionality into a single chip.
It also supports HSDPA categories 7 and 8, allowing high-speed data downloads along with support for global standards.
It integrates a low-noise amplifier (LNA).
It combines all high-frequency signal processing functions except antenna switching in a single chip in a 7 x 7 x 0.60mm package that has a mounting area approximately 20% smaller than previous RF transceiver ICs from Renesas Technology.
The R2A60281LG implements A/D and D/A conversion functions formerly handled by an analogue baseband processor.
It includes a high-speed (maximum 312Mbit/s) digital interface function that enables high-speed exchange of I/Q and control data with a digital baseband processor, making possible high-speed transfer of large data volumes.
Since no analogue baseband processor is necessary, the combined mounting area is reduced.
Multimedia handsets offering an array of nonphone functions, such as One-Seg terrestrial digital broadcasting reception, are becoming more popular and this has resulted in an increase in the number of electronic devices mounted on handset circuit boards, even as the handsets themselves are becoming thinner.
These trends have increased demand for RF transceiver ICs that support multiple frequency bands and both 2G and 3G modes while at the same time offering faster operation as well as smaller and thinner packages.
Renesas Technology already mass produces a 2G (GPRS/EDGE) quad-band (850/900MHz/1.8/1.9GHz) RF transceiver IC (5 x 5 x 1mm) and 3G (W-CDMA) triple-band (800MHz/1.7/2GHz) RF transceiver IC (5 x 5 x 0.65mm), both of which feature compact, thin packages and are used in a variety of handset products.
The company has now combined these two types of RF transceiver IC in a single chip.
The R2A60281LG ultracompact 2G/3G dual-mode RF transceiver additionally supports the 1.5GHz band under the specifications newly standardised by the Third Generation Partnership Project (3GPP), an international body for establishing 3G mobile phone standards.
In addition to a low-noise amplifier (LNA) and loop filter circuit, the R2A60281LG incorporates a filter supporting CDMA2000 that attenuates wavelengths outside the desired frequency band in order to reduce susceptibility to radio interference.
This makes it possible to complete system development on a high-frequency signal processing block in less time.
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