
US : Texas Instruments
introduced the industry's most integrated, highest performance diversity
mixed signal receive processor for 3G base stations and fixed wireless
communication devices. TI's AFE8406 multi-carrier chipintegrates a
dual 14 bit 85 MSPS (mega samples per second) analog-to-digitalconverter
(ADC) and sixteen channels of programmable digital down conversion(DDC)
into a single device.
Leveraging TI's
high performance, advanced technology, this multi-channel communication
signal processor offers increased density, resulting in lowercosts
for systems supporting a range of 3G standards. The multiple DDC channels
allow a larger number of carriers per signal chain, translating to
significantly reduced implementation costs. TI's AFE8406 can be configured
to support up to four-carrier UMTS, eight-carrier CDMA or eight-carrier
TD-SCDMA
diversity receivers.
"The release
of the 3G spectrum in China will create a large demand for advanced
wireless infrastructure applications, providing the next-level of
mobile telecommunications services and features to the world's largest
cellular market," said David Briggs, TI's analog wireless infrastructure
business manager. "TI has responded to the wireless infrastructure
designers' needs for enhanced integration, higher performance and
increased density for 3G applications with its new AFE8406."
TI's AFE8406 delivers
outstanding intermediate frequency (IF) performancewith extremely
low noise to enable multi carrier operations. At an input frequency
of 140 MHz, the device delivers signal-to-noise ratio (SNR) of greater
than 68 dB, and spurious free dynamic range (SFDR) of greater than
70 dBc.
The AFE8406 continues
to build on TI's existing portfolio of state-of-the-art signal chain
solutions:
* GC5018, an eight channel wide band down converter with front end/back
end AGC; GC5016, a four channel digital down/up converter.
* GC1115, crest factor reduction processors.
* ADS5411-11bit 105MSPS and ADS5545, high speed analog-to-digital
converters, 14 bit 170MSPS.
* DAC5687, a dual 16 bit 500MSPS, high-speed digital-to-analog
converters.
* TRF3761 frequency synthesizer and TRF3702 RF quadrature modulator.
For developers
using the AFE8406, TI provides an evaluation module (EVM) for easy
integration of the device into wireless infrastructure base stations
and other targeted applications. The EVM is complemented with the
easy to use GC Studio software for data analysis.