GC5325 宽带数字预失真发送处理器

The GC5325 is a wideband digital predistortion transmit processor that includes a crest factor reduction (CFR) block and a digital predistortion (DPD) block with its associated feedback chain and capture buffers. The GC5325 processes composite input bandwidths of up to 20 MHz and processes DPD sample rates of up to 140 MHz. The GC5325 accepts a composite signal over an interleaved parallel interface at a data rate of up to 140 MSPS. The GC5325 CFR block reduces the peak-to-average ratio (PAR) of wideband digital signals provided in quadrature (I/Q) format, such as those used in third-generation (3G) code division multiple access (CDMA) wireless and orthogonal frequency division multiple access (OFDMA) applications. The GC5325 DPD block reduces adjacent-channel leakage ratio (ACLR), or out-of-band energy, by 20 dB to 30 dB or more.

	GC5322	GC5325	GC5328
Baseband Input Clock (Max) (MHz)	140	140	100
DPD Function (Y/N)	Y	Y	Y
CFR Function (Y/N)	Y	Y	Y
DUC Function (Y/N)	Y	N	Y
No. of Transmitter Ports	1	1	1
Resolution of BB Input Port (Bits)	18	18	18
Narrowband Channels (DUC)	12		12
Wideband Channels (DUC)	4		4
Operating Temperature Range (C)	-40 to 85	-40 to 85	-40 to 85
No. of Supply Voltages	3	3	3
Power Dissipation (Typ) (W)	2.5	1.9	2.5
Pin/Package	352BGA	352BGA	484BGA
Approx. Price (US$)	62.00 \| 1ku	56.00 \| 1ku	56.00 \| 1ku
DPD Expansion BW (Max) (MHz)	140	140	100
CFR Input Sample Rate (Max) (MSPS)	70	70	50
DUC Input Clock Rate (Max) (MHz)	92.5		66
Core Supply Voltage (Typ) (V)	1.2	1.2	1.2
I/O Supply Voltage 1 (Typ) (V)	1.8	1.8	1.8
I/O Supply Voltage 2 (Typ) (V)	3.3	3.3	3.3

GC5325 特性

Integrated DUC, CFR, and DPD Solutions
40-MHz (28-Mhz) Signal Bandwidth, Third (Fifth)-Order Expansion BW in DPD Section, Maximum Complex Rate 140 Mhz
DUC: up to 12 CDMA2000 or TD-SCDMA, 4 W-CDMA, 3-10 MHz or 1-20 MHz OFDMA Carriers
CFR: Typically Meets 3GPP TS 25.141 <6.5-dB PAR, <8-dB PAR for OFDMA Signals
DPD: Short-Term and Long-Term Memory Compensation to 1 µs, Typical ACLR Improvement > 20 dB
Single-Antenna TX Mode, Single or Shared Feedback
352-Ball S-PBGA Package, 27-mm × 27-mm
1.2-V Core, 1.8-V HSTL, 3.3-V I/O
Typical Power Consumption < 2.5 W, Configuration Dependent
Flexible DSP Algorithm Supports Existing and Emerging Wireless Standards
Supports Direct Interface to TI High-Speed Data Converters
APPLICATIONS
- 3GPP (W-CDMA) Base Stations
- 3GPP2 (CDMA2000) Base Stations
- WiMAX, WiBro, and LTE (OFDMA) Base Stations
- Multicarrier Power Amplifiers (MCPAs)

GC5325 芯片订购指南

器件	状态	温度	价格	封装 \| 引脚	封装数量 \| 封装载体	丝印标记
GC5325IZND	ACTIVE	-40 to 85	56.00 \| 1ku	BGA (ZND) \| 352	40 \| JEDEC TRAY (10+1)

GC5325 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
GC5325IZND	Pb-Free (RoHS)	SNAGCU	Level-3-260C-168 HR	GC5325IZND	GC5325IZND

GC5325 工具与软件

培训内容	型号	软件/工具类型
GC5325 Evaluation Module	GC5325EVM	开发电路板/EVM