Texas Instruments (TI) has introduced the industry’s widest bandwidth, fully-integrated transmit/receive processors with digital pre-distortion (DPD) for 3G and 4G wireless basestations, remote radio heads, and government communication systems, according to the company. The GC533x family features two turn-key processors that provide a complete and highly flexible digital transmit and receive solution for wide-bandwidth and multi-antenna wireless basestations at a fraction of the cost of high-gate-count FPGAs and without the time and investment required to develop a custom ASIC solution. TI will showcase the complete system evaluation and reference design kit at Mobile World Congress.

The GC533x family provides up to 148 MHz of fifth order corrected transmit bandwidth with crest factor reduction (CFR), along with wideband digital up/down converters with fractional re-samplers, 48-bit numerically controlled oscillators (NCO) and automatic gain control that can support four transmit and eight receive antennas simultaneously. When combined with the low-cost, high-performance TMS320C6748 floating point digital signal processor (DSP), the GC533x platform offers customers a high-performance adaptive DPD algorithm or the ability to implement their own DPD IP.

One key feature is 20 dB of adjacent channel leakage power ratio (ACLR) improvement compared to uncorrected signals in wide-bandwidth applications and 40 dB improvement in narrow-bandwidth applications while offering multi-channel, multi-carrier, multi-mode, and multi-band support for standards such as 3GPP, MC-GSM, WiMAX, WiBRO, and 3GPP2.

Also, the GC533x family interfaces for up to four transmit and eight receive antennas and a real or complex observation path, enabling 2x2, 2x4, 4x4 and 4x8 transmit/receive solutions while simplifying board layout and reducing cost by an order of magnitude compared to FPGAs.  Additionally, it integrates I/Q imbalance correction for enhanced performance of wideband complex receive and DPD observation signal chains, enabling lower sample rate and lower-cost receive and feedback analog-to-digital converters (ADCs).

The GC5330SEK system evaluation and reference design kit provides a complete transceiver reference design for wide bandwidth applications. It includes:

• DAC3283 communications DAC (digital-to-analog converter), TRF372017 IQ modulator with integrated PLL/VCO and TRF370417 IQ modulator for diversity transmit
• PGA870 programmable-gain amplifier, THS770006 fully-differential op amp and ADS62P49 ADC for diversity receive
• PGA870 and ADS41B49 ADC for DPD observation
• CDCE72010 clock synthesizer and jitter cleaner for system clocking
• TMS320C6748 fixed/floating point DSP

To order samples of the GC533x family, visit www.ti.com/gc533x-pr.

The GC5330SEK is available through TI today for $8500. Software licensing agreement and support fees may apply.

The GC533x family is offered in a 23-mm x 23-mm TE-PBGA package.

The GC5330, featuring 620 MHz of total DPD bandwidth with up to four transmit and eight receive antenna support, is available today for a suggested resale price of $80 in 1000-unit quantities.

The GC5337, offering 740 MHz of total DPD bandwidth with up to four transmit and eight receive antenna support, will be available in March for a suggested resale price of $95 in 1000-unit quantities.

Texas Instruments

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