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LT5571 PDF预览

LT5571

更新时间: 2024-01-15 18:52:56
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
16页 316K
描述
620MHz - 1100MHz High Linearity Direct Quadrature Modulator

LT5571 技术参数

是否Rohs认证:符合生命周期:Transferred
零件包装代码:QFN包装说明:HVQCCN, LCC16,.16SQ,25
针数:16Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.08Is Samacsys:N
JESD-30 代码:S-PQCC-N16JESD-609代码:e3
长度:4 mm湿度敏感等级:1
功能数量:1端子数量:16
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:HVQCCN
封装等效代码:LCC16,.16SQ,25封装形状:SQUARE
封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度(摄氏度):260
电源:5 V认证状态:Not Qualified
座面最大高度:0.8 mm子类别:Other Telecom ICs
最大压摆率:0.12 mA标称供电电压:5 V
表面贴装:YES电信集成电路类型:RF AND BASEBAND CIRCUIT
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
端子形式:NO LEAD端子节距:0.65 mm
端子位置:QUAD处于峰值回流温度下的最长时间:30
宽度:4 mmBase Number Matches:1

LT5571 数据手册

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LT5571  
620MHz – 1100MHz High  
Linearity Direct Quadrature  
Modulator  
FEATURES  
DESCRIPTION  
The LT®5571 is a direct I/Q modulator designed for high  
performance wireless applications, including wireless  
infrastructure. It allows direct modulation of an RF signal  
using differential baseband I and Q signals. It supports  
RFID,GSM,EDGE,CDMA,CDMA2000,andothersystems.  
It may also be configured as an image reject upconvert-  
ing mixer by applying 90° phase-shifted signals to the I  
and Q inputs. The high impedance I/Q baseband inputs  
consist of voltage-to-current converters that in turn drive  
double-balanced mixers. The outputs of these mixers are  
summed and applied to an on-chip RF transformer, which  
converts the differential mixer signals to a 50Ω single-  
ended output. The four balanced I and Q baseband input  
ports are intended for DC-coupling from a source with a  
common-modevoltageatabout0.5V.TheLOpathconsists  
of an LO buffer with single-ended input, and precision  
quadrature generators that produce the LO drive for the  
mixers. The supply voltage range is 4.5V to 5.25V.  
Direct Conversion from Baseband to RF  
High Output: –4.2dB Conversion Gain  
High OIP3: 21.7dBm at 900MHz  
Low Output Noise Floor at 20MHz Offset:  
No RF: –159dBm/Hz  
P
OUT  
= 4dBm: –153.3dBm/Hz  
Low Carrier Leakage: –42dBm at 900MHz  
High Image Rejection: –53dBc at 900MHz  
3-Ch CDMA2000 ACPR: –70.4dBc at 900MHz  
Integrated LO Buffer and LO Quadrature Phase  
Generator  
50Ω AC-Coupled Single-Ended LO and RF Ports  
High Impedance DC Interface to Baseband Inputs  
with 0.5V Common Mode Voltage  
16-Lead QFN 4mm × 4mm Package  
APPLICATIONS  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
RFID Interrogators  
GSM, CDMA, CDMA2000 Transmitters  
Point-to-Point Wireless Infrastructure Tx  
Image Reject Up-Converters for Cellular Bands  
Low-Noise Variable Phase-Shifter for 620MHz to  
1100MHz Local Oscillator Signals  
TYPICAL APPLICATION  
CDMA2000 ACPR, AltCPR and Noise vs RF  
Output Power at 900MHz for 1 and 3 Carriers  
Direct Conversion Transmitter Application  
–40  
–50  
–60  
–70  
–80  
–90  
–110  
–120  
–130  
–140  
–150  
–160  
5V  
DOWNLINK TEST  
MODEL 64 DPCH  
100nF  
V
LT5571  
×2  
CC  
RF = 620MHz  
TO 1100MHz  
I-DAC  
3-CH ACPR  
V-I  
I-CH  
1-CH  
3-CH AltCPR  
PA  
ACPR  
0°  
EN  
90°  
BALUN  
Q-CH  
V-I  
1-CH NOISE  
Q-DAC  
1-CH AltCPR  
3-CH NOISE  
BASEBAND  
GENERATOR  
5571 TA01a  
–30  
–25  
–20  
–15  
–10  
–5  
0
VCO/SYNTHESIZER  
RF OUTPUT POWER PER CARRIER (dBm)  
5571 TA01b  
5571f  
1

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