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GC5328IZER Datasheet(PDF) 1 Page - Texas Instruments

Part # GC5328IZER
Description  GC5328 Low-Power Wideband Digital Predistortion Transmit Processor
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

GC5328IZER Datasheet(HTML) 1 Page - Texas Instruments

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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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