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参数资料
| 型号： | AD6633 |
| 厂商： | Analog Devices, Inc. |
| 英文描述： | Multichannel Digital Upconverter with VersaCREST Crest Reduction Engine |
| 中文描述： | 多通道数字上变频器与VersaCREST波峰因数降低技术 |
| 文件页数： | 2/2页 |
| 文件大小： | 89K |
| 代理商： | AD6633 |
AD6633
PRODUCT OVERVIEW
The AD6633 is a multichannel, wide bandwidth DUC
with a VersaCREST crest reduction engine. It processes digital
baseband input data and generates wideband, real, or complex
IF output data. It drives DACs up to any IF sampled at up to
125 MSPS. Up to six wideband modulated carriers per package
can be achieved from a single output port. Devices may be
connected together for additional channels by using multiple
packages. Interpolation, anti-image filtering, all-pass
equalization, and NCO tuning functions are combined in
a single, cost-effective device that includes the VersaCREST
crest factor reduction engine.
Rev. Sp0 | Page 2 of 2
0
PHASE
EQ
RESAMPLING
RCF
FINE
NCO
FIR1
FIR2
CIC5
VersaCREST REDUCTION ENGINE
Figure 2. Wideband Channel
Each VersaCREST wideband channel contains a peak-to-
average compensation block that reduces PA requirements.
By minimizing infrequent peaks in code-division, multiple-
access (CDMA) signals, a PA with one-half to one-quarter the
previously necessary power capacity can be used. This is done
within standard signal quality requirements and significantly
lowers system cost.
The input data is time-multiplexed among the active channels
for processing through a 20-bit input port. Each channel has a
number of elements available to interpolate, resample, and filter
the data while tuning to an IF for further upconversion within a
radio frequency (RF) system.
An all-pass phase equalizer, designed to comply with IS-95,
including cdma2000 standards, is the first available block. A
user-configurable, interpolating RAM coefficient filter (RCF) is
the first general-purpose filter stage in the channel. It provides
multirate processing, including resampling and malleable finite
impulse response (FIR) filter characteristics. Further filtering
can be accomplished with two additional, fixed-coefficient, FIR,
half-band stages. A fifth-order, cascade integrator comb (CIC5)
is the final filter stage available.
Each channel has its own 32-bit NCO to upconvert the
filtered/interpolated data to a first IF.
0
V
S
S
C
H
C
A
Q
C
Q[17:0]
I[17:0]
GAIN[3:0]
Figure 3. Summation and Post-Sum Blocks
Post-processing after channel summation includes power
monitoring, filtering, composite NCO, digital automatic gain
control (AGC) output, and quadrature correction stages. The
output may be real or complex, and complex output may be
parallel on two 18-bit ports or interleaved on one 18-bit port.
Control registers and coefficient values are programmed
through a generic 16-bit microprocessor interface or a
SPI-/SPORT-compatible serial port. Intel and Motorola
microprocessor bus modes are supported.
The AD6633 uses a 3.3 V I/O power supply and a 1.8 V core
power supply. Typical power consumption is 75 mW per
channel or 1.4 W for the complete device. All inputs and
outputs are LVCMOS-compatible and are 5 V tolerant.
2004 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D04939F–0–10/04(Sp0)
相关PDF资料 |
PDF描述 |
|---|---|
| AD6634 | 80 MSPS, Dual-Channel WCDMA Receive Signal Processor (RSP) |
| AD6634BBC | 80 MSPS, Dual-Channel WCDMA Receive Signal Processor (RSP) |
| AD6634PCB | 80 MSPS, Dual-Channel WCDMA Receive Signal Processor (RSP) |
| AD6635 | 4-Channel, 80 MSPS WCDMA Receive Signal Processor (RSP) |
| AD6635BB | 4-Channel, 80 MSPS WCDMA Receive Signal Processor (RSP) |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD6633BBC | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD6633BBCZ | 功能描述:IC DIGITAL UPCONV 6CH 196-CSPBGA RoHS:是 类别:RF/IF 和 RFID >> RF 混频器 系列:AD6633 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:100 系列:- RF 型:W-CDMA 频率:2.11GHz ~ 2.17GHz 混频器数目:1 增益:17dB 噪音数据:2.2dB 次要属性:- 电流 - 电源:11.7mA 电源电压:2.7 V ~ 3.3 V 包装:托盘 封装/外壳:12-VFQFN 裸露焊盘 供应商设备封装:12-QFN-EP（3x3） |
| AD6633BC/PCB | 制造商:Analog Devices 功能描述:Evaluation Board For Multi-Channel Digital Up-Converter With Versacrest Crest Reduction Engine 制造商:Analog Devices 功能描述:EVALUATION BOARD AD6633 - Bulk 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD6633BC/PCBZ | 制造商:Analog Devices 功能描述:EVALUATION BOARD AD6633 PB-FREE - Bulk |
| AD6633CBCZ | 功能描述:IC DIGITAL UPCONV 4CH 196-CSPBGA RoHS:是 类别:RF/IF 和 RFID >> RF 混频器 系列:AD6633 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:100 系列:- RF 型:W-CDMA 频率:2.11GHz ~ 2.17GHz 混频器数目:1 增益:17dB 噪音数据:2.2dB 次要属性:- 电流 - 电源:11.7mA 电源电压:2.7 V ~ 3.3 V 包装:托盘 封装/外壳:12-VFQFN 裸露焊盘 供应商设备封装:12-QFN-EP（3x3） |
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