GC5330IZEV Datasheet, PDF (5/49 Pages) Texas Instruments – Wideband Transmit-Receive Digital Signal Processors

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C6748
DSP
DAC3484
DAC
I/Q
GC5330
GC5337
SLWS226 B – DECEMBER 2010 – REVISED JANUARY 2011
TRF3703/3720
I/Q Mod
Complex
TX
PA
I/Q Mod
PA
I/Q Mod
PA
DAC
I/Q
I/Q Mod
PA
Baseband
Data
GC533x
DUC-CFR
DPD
DDC
ADS61B49
FB
ADC
ADS62P49
RX
ADC
RX
ADC
SW
Mixer/BPF
Subsampled
Feedback
Mixer/BPF
Mixer/BPF
LNA
Real
RX
LNA
ADS62P49
RX
ADC
RX
ADC
Mixer/BPF
Mixer/BPF
LNA
Real
RX
LNA
B0441-01
Figure 5. Four-Antenna-Mode Subsampled Real-Feedback Example Diagram
GENERAL DESCRIPTION
The GC533x is a wideband transmit and receive signal processor that includes digital downconverter/upconverter
(DDUC), transmit, receive, and capture buffer blocks. The transmit path includes crest factor reduction (CFR),
digital predistortion (DPD) and associated feedback path, complex equalization, and bulk upconversion. The
receive path includes wideband and narrowband automatic gain control (AGC), bulk downconversion, complex
equalization, and I/Q imbalance correction. The GC5337 is a higher-speed version of the GC5330 that has the
same package, but with interfaces that can provide more processing performance for higher-bandwidth
applications. In the descriptions, the GC5337 differences are shown with { } values.
The architecture supports different RX, TX, and feedback modes of operation. This provides for many
configurations to optimize performance and cost.
• RX – real or complex input
• TX – real, complex, complex with envelope tracking
• Feedback – subsampled real, full-rate real, full-rate complex
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