ADL5385(Rev0) データシートの表示（PDF） - Analog Devices
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ADL5385 Datasheet PDF : 24 Pages
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FEATURES
Output frequency range: 50 MHz to 2200 MHz
1 dB output compression: 11 dBm @ 350 MHz
Noise floor: –159 dBm/Hz @ 350 MHz
Sideband suppression: −50 dBc @ 350 MHz
Carrier feedthrough: −46 dBm @ 350 MHz
Single supply: 4.75 V to 5.5 V
24-lead, Pb-free LFCSP_VQ with exposed paddle
APPLICATIONS
Radio-link infrastructure
Cable modem termination systems
Wireless infrastructure systems
Wireless local loop
WiMAX/broadband wireless access systems
PRODUCT DESCRIPTION
The ADL5385 is a silicon, monolithic, quadrature modulator
designed for use from 50 MHz to 2200 MHz. Its excellent phase
accuracy and amplitude balance enable both high performance
intermediate frequency (IF) and direct radio frequency (RF)
modulation for communication systems.
The AD5385 takes the signals from two differential baseband
inputs and modulates them onto two carriers in quadrature
with each other. The two internal carriers are derived from
a single-ended, external local oscillator input signal at twice the
frequency as the desired carrier output. The two modulated
signals are summed together in a differential-to-single-ended
amplifier designed to drive 50 Ω loads.
50 MHz to 2200 MHz
Quadrature Modulator
ADL5385
FUNCTIONAL BLOCK DIAGRAM
ENBL
IBBP
BIAS
TEMPERATURE
SENSOR
TEMP
IBBN
LOIP
LOIN
DIVIDE-BY-2
QUADRATURE
PHASE
SPLITTER
VOUT
QBBP
QBBN
Figure 1.
The ADL5385 can be used as either an IF or a direct-to-RF
modulator in digital communication systems. The wide
baseband input bandwidth allows for either baseband drive or
drive from a complex IF. Typical applications are in radio-link
transmitters, cable modem termination systems, and broadband
wireless access systems.
The ADL5385 is fabricated using the Analog Devices, Inc.,
advanced silicon germanium bipolar process and is packaged in
a 24-lead, Pb-free LFCSP_VQ with exposed paddle.
Performance is specified over –40°C to +85°C. A Pb-free
evaluation board is also available.
Rev. 0
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rights of third parties that may result from its use. Specifications subject to change without notice. No
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