If you’re designing femtocell base stations or portable software-defined radio applications, we a couple of new AFEs right up your alley!
The AFE7225 is the industry’s fastest, highest-performance analog front end for femotcell base stations and portable software-defined radio applications. It integrates a dual 125-MSPS analog-to-digital converter (ADC) and dual 250-MSPS digital-to-analog converter (DAC). It operates 25% faster than the competition, while increasing the SNR by 2 dB and providing up to 5x the DAC output current.
If you’re designing an application that’s lower bandwidth and more power sensitive, we also have the new 12-bit AFE7222. It integrates a dual 65-MSPS ADC and dual 130-MSPS DAC and uses only 398 mW in full-duplex or 212 mW in half-duplex receive mode at full speed.
The AFE7225 and AFE7222 both integrate more digital signal processing capabilities than similar AFEs, which increases design flexibility. They are the only mixed-signal AFEs with independent transmit and receive, 32-bit NCOs, serialized LVDS input/output options, and independent transmit/receive quadrature modulation correction for gain, phase and offset imbalances.
Both AFEs can be used in heterodyne or direct-conversion radio architectures. For heterodyne radios, a single DAC channel in the AFEs can be used to create an intermediate frequency up to approximately 100 MHz for transmit, and a single ADC channel can be used to capture IFs of more than 300 MHz, with the unused channels shut down to conserve power. For femtocell base stations, the AFEs provide macro-cell performance when combined with high-quality RF components, such as the TRF372017 IQ modulator with local oscillator and the TRF371125 IQ demodulator.
Key features and benefits of the AFEs include the following:
Evaluation modules are available now for $499. The AFE7222EVM and AFE7225EVM include the TRF370333 IQ modulator and CDCE72010 clock jitter cleaner, as well as TI power management devices, such as DC/DC converters and low-noise LDOs, to provide a complete bits-to-RF prototyping and reference design.
An IBIS model to verify board signal integrity requirements is also available.
The AFE7225 is available in a 9-mm x 9-mm QFN package for a suggested retail price of $29.50 for 1,000-units. The AFE7222 is available in a 9-mm x 9-mm QFN package for a suggested retail price of $19.50 in 1,000-unit quantities.
I'm looking for some advice on the selection of components for a HF SDR operating from 5-25MHz but would like to be able to run VHF and UHF on the same board if possible. This is going to be for a regional E-Comm Radio with the HF side operating using NVIS. I was looking at the AFE7222 and the GC5330. I have not decided on which FPGA to use. I like Altera but Xilinx seems to have a lot more IP's to choose from. I'd like to keep the design as simple and easy to implement as possible. Will be using mostly SSB for digital transmission. Any help would be greatly appreciated.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.