400 MHz to 6 GHz
Broadband Quadrature Modulator
ADL5375
Data Sheet
FEATURES
FUNCTIONAL BLOCK DIAGRAM
IBBP
ADL5375
IBBN
LOIP
LOIN
QUADRATURE
PHASE
SPLITTER
RFOUT
DSOP
QBBN
07052-001
Output frequency range: 400 MHz to 6 GHz
1 dB output compression: ≥9.4 dBm from 450 MHz to 4 GHz
Output return loss ≤ 12 dB from 450 MHz to 4.5 GHz
Noise floor: −160 dBm/Hz at 900 MHz
Sideband suppression: ≤−50 dBc at 900 MHz
Carrier feedthrough: ≤−40 dBm at 900 MHz
IQ3dB bandwidth: ≥ 750 MHz
Baseband input bias level
ADL5375-05: 500 mV
ADL5375-15: 1500 mV
Single supply: 4.75 V to 5.25 V
24-lead LFCSP_VQ package
QBBP
Figure 1.
APPLICATIONS
Cellular communication systems
GSM/EDGE, CDMA2000, W-CDMA, TD-SCDMA
WiMAX/LTE broadband wireless access systems
Satellite modems
GENERAL DESCRIPTION
The ADL5375 is a broadband quadrature modulator designed for
operation from 400 MHz to 6 GHz. Its excellent phase accuracy
and amplitude balance enable high performance intermediate
frequency or direct radio frequency modulation for communication systems.
The ADL5375 features a broad baseband bandwidth, along
with an output gain flatness that varies no more than 1 dB
from 450 MHz to 3.5 GHz. These features, coupled with a broadband output return loss of ≤−12 dB, make the ADL5375 ideally
suited for broadband zero IF or low IF-to-RF applications,
Rev. D
broadband digital predistortion transmitters, and multiband
radio designs.
The ADL5375 accepts two differential baseband inputs and
a single-ended LO. It generates a single-ended 50 Ω output.
The two versions offer input baseband bias levels of 500 mV
(ADL5375-05) and 1500 mV (ADL5375-15).
The ADL5375 is fabricated using an advanced silicon-germanium
bipolar process. It is available in a 24-lead, exposed paddle, leadfree, LFCSP_VQ package. Performance is specified over a −40°C
to +85°C temperature range. A lead-free evaluation board is
also available.
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