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GC5328IZER Datasheet(PDF) 1 Page - Texas Instruments |
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GC5328IZER Datasheet(HTML) 1 Page - Texas Instruments |
1 / 27 page GC5328 DUC-CFR-DPD BBData DAC 'C6727 DSP DAC I/Q ADC I/Q Modulator LO Mixer LPA HPA Attenuator 0 31.5dB – Attenuator 0 31.5dB – Host Control Interface B0278-03 GC5328 www.ti.com SLWS218A – OCTOBER 2009 – REVISED OCTOBER 2009 GC5328 Low-Power Wideband Digital Predistortion Transmit Processor Check for Samples: GC5328 1 FEATURES • TMS320C6727 DPD Optimization Software • Integrated DUC, CFR, and DPD Solution • Supports Direct Interface to TI High-Speed Data Converters • 20-MHz Max. Signal Bandwidth, Based on Max. DPD Clock of 200 Mhz, Fifth-Order Correction APPLICATIONS • DUC: Up to 12 CDMA2000/TDSCDMA, 4 • 3 GPP (W-CDMA) Base Stations W-CDMA, 2–10 MHz or 1–20 MHz OFDMA • 3 GPP2 (CDMA2000) Base Stations Carriers • WiMAX, WiBRO, and LTE (OFDMA) Base • CFR: Typically Meets 3GPP TS 25.141 < 6.5 dB Stations PAR, < 8.5 dB PAR for OFDMA Signals • Multicarrier Power Amplifiers (MCPAs) • DPD: Short-Term Memory Compensation, Typical ACLR Improvement > 20 dB • GC5328IZER PBGA Package, 23 mm × 23 mm • 1.2-V Core, 1.8-V HSTL, 3.3-V I/O • 2.5-W Typical Power Consumption Figure 1. GC5328 System Block Diagram DESCRIPTION The GC5328 is a lower-power version of the GC5322 wideband digital predistortion transmit processor. The GC5328 includes a digital upconverter (DUC) block, a crest factor reduction (CFR) block, a digital predistortion (DPD) block, feedback (FB) block, and capture buffer (CB) blocks. The GC5328 GPP block receives the interleaved IQ data from the baseband input. The individual IQ channels are gain-adjusted in the GPP and routed to the DUC. The GPP and DUC can be bypassed to input a combined IQ signal. The DUC provides three stages of interpolation and a complex mixer. There are two DUC blocks. The output from the DUC blocks is combined in the sum chain. Each of the 1 to 12 DUC channels can be summed, and the composite signal can be scaled. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2009, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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