GC5322IZND Datasheet, PDF (3/4 Pages) Texas Instruments – Wideband Digital Pre-Distortion Transmit IC Solution

Improved efficiency
The combination of CFR and DPD functionality in
the GC5322 significantly improves the efficiency
of LDMOS Doherty PAs, reaching 40 percent or
more, while Class AB PAs can reach efficiencies
greater than 25 percent. As a result, the PA can
be driven harder to yield higher output power.
Smaller, less costly PAs can be used, while still
ensuring the required output power level. This
maximizes overall system performance and cost
savings.
Reduced power consumption
The resulting efficiency improvement reduces RF
subsystem power requirements and provides a
reduction in cooling infrastructure and operating
costs leading to significantly decreased operating
expenses for the base station.
Complete signal chain
solution
The GC5322 DPD architecture is supported
by a system evaluation kit (GC5322SEK). The
GC5322SEK is a fully-tested DPD wireless
transmit signal chain solution comprised of
both TI high-performance analog and RF
products. The GC5322SEK can be used as a
reference design to shorten time to market.
Since most of the transmit signal chain is
provided by TI, applications support is simplified.
The TI devices that complement the
GC5322 device in the transmit signal chain
include the following:
GC5322 EVM
BB
GC5322
DUC-CFR-DPD
C6727
DSP
SDRAM
DAC5682
DAC
DAC
CDCM7005
PLL
TRF3703
I/Q
Modulator
Attenuator
LPA
TRF3761
LO
ADS5444
ADS5517
ADC
THS9000
AMP
Attenuator
Mixer
and BPF
DPD RF-Card
A complete digital pre-distortion transmit signal chain with the GC5322SEK
(System Evaluation Kit) based on TI high-speed analog and DSP technology
HPA
Power
Detector
• TMS320C6727 digital signal processor
• DAC5682Z dual 16-bit, 1 GSPS DAC
(transmit path)
• ADS5444 13-bit 250-MSPS ADC
or ADS5517 11-bit 200-MSPS ADC
(feedback path)
• CDCM7005 clock generator
• TRF3761 integrated VCO/PLL RF synthesizer
• TRF3703 quadrature modulator
• THS9000 IF amplifier
• AMC7823 analog monitoring and
control circuit
For more information
To learn more about the GC5322 wireless
transmit processor and other TI products for
wireless infrastructure systems, contact your
local TI field sales office or see
www.ti.com/gc5322
GC5322SEK: GC5322 EVM Card
GC5322SEK: 20-MHz Bandwidth RF Card