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LT5518EUF

更新时间： 2024-01-23 21:27:33
品牌 Logo 应用领域
凌特 - Linear 射频调制器射频解调器微波调制器微波解调器射频和微波
页数 文件大小 规格书
16页 374K
描述
1.5GHz - 2.4GHz High Linearity Direct Quadrature Modulator

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中文翻译

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LT5518EUF 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active针数：16
Reach Compliance Code：compliant风险等级：5.6
特性阻抗：50 Ω构造：COMPONENT
JESD-609代码：e3调制技术：QUADRAPHASE
最大工作频率：2400 MHz最小工作频率：1500 MHz
最高工作温度：85 °C最低工作温度：-40 °C
射频/微波设备类型：MODULATOR端子面层：Matte Tin (Sn)
Base Number Matches：1

LT5518EUF 数据手册

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LT5518  
1.5GHz–2.4GHz  
High Linearity Direct  
Quadrature Modulator  
U
DESCRIPTIO  
FEATURES  
The LT®5518 is a direct I/Q modulator designed for high  
performance wireless applications, including wireless  
infrastructure. It allows direct modulation of an RF signal  
usingdifferentialbasebandIandQsignals.ItsupportsPHS,  
GSM, EDGE, TD-SCDMA, CDMA, CDMA2000, W-CDMA  
and other systems. It may also be configured as an image  
reject up-converting 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 balanced I and Q  
baseband input ports are intended for DC coupling from a  
source with a common mode voltage level of about 2.1V.  
The LO path consists 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.  
■
High Input Impedance Version of the LT5528  
■
Direct Conversion to 1.5GHz – 2.4GHz  
■
High OIP3: 22.8dBm at 2GHz  
■
Low Output Noise Floor at 20MHz Offset:  
No RF: –158.2dBm/Hz  
P
OUT  
= 4dBm: –152.5dBm/Hz  
■
■
4-Ch W-CDMA ACPR: –64dBc at 2.14GHz  
Integrated LO Buffer and LO Quadrature Phase  
Generator  
■
■
■
■
50Ω AC-Coupled Single-Ended LO and RF Ports  
Low Carrier Leakage: –49dBm at 2GHz  
High Image Rejection: 40dB at 2GHz  
16-Lead QFN 4mm × 4mm Package  
U
APPLICATIO S  
■
Infrastructure Tx for DCS, PCS and UMTS Bands  
■
Image Reject Up-Converters for DCS, PCS and UMTS  
Bands  
■
Low Noise Variable Phase-Shifter for 1.5GHz to  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
2.4GHz Local Oscillator Signals  
U
TYPICAL APPLICATIO  
1.5GHz to 2.4GHz Direct Conversion Transmitter Application  
with LO Feedthrough and Image Calibration Loop  
W-CDMA ACPR, AltCPR and Noise vs RF Output  
Power at 2140MHz for 1 and 4 Channels  
5V  
100nF  
×2  
V
CC 8, 13  
–55  
–60  
–65  
–70  
–75  
–80  
–85  
–135  
–140  
–145  
–150  
–155  
–160  
–165  
4-CH ACPR  
LT5518  
14  
16  
RF = 1.5GHz  
TO 2.4GHz  
I-DAC  
V-I  
I-CHANNEL  
4-CH ALTCPR  
1-CH ACPR  
11  
PA  
0°  
1
EN  
90°  
LO FEEDTHROUGH  
CAL OUT  
BALUN  
Q-CHANNEL  
V-I  
7
5
Q-DAC  
1-CH ALTCPR  
IMAGE CAL OUT  
1-CH NOISE  
CAL  
4-CH NOISE  
BASEBAND  
GENERATOR  
3
VCO/SYNTHESIZER  
2, 4, 6, 9, 10, 12, 15, 17  
DOWNLINK TEST MODEL 64 DPCH  
–34 –30 –26 –22 –18 –14 –10  
RF OUTPUT POWER PER CARRIER (dBm)  
5518 TA01b  
ADC  
5518 TA01a  
5518f  
1
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中文翻译

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