400 MHz TO 6 GHz Broadband Quadrature Modulator
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 3.8 GHz. These features, coupled with a broadband output return loss of <−14 dB, make the ADL5375 ideally suited for broadband zero IF or low IF-to-RF applications, 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, Pb-free, LFCSP_VQ package. Performance is specified over a −40°C to +85°C temperature range. A Pb-free evaluation board is also available.
- Cellular communication systems
GSM/EDGE, CDMA2000, W-CDMA, TD-SCDMA
- WiMAX/broadband wireless access systems
- Satellite modems
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
ADL5375-15-EVALZ is a fully populated, 4-layer, FR4-based evaluation board. For normal operation, it requires a 5 V/500 mA power supply. The 5 V power supply should be connected to the clip leads labeled VPOS and GND. The LO and baseband inputs (which should be biased at 1.5 V) are applied to edge-mounted SMA-type RF connectors. The ADL5375 output drives the ADL5320 driver amplifier with its output is available at the SMA connector labeled AMP_OUT. The ADL5375's output can be accessed directly at the SMA connector labeled AMP_IN/SMA_OUT (remove R2 and install zero ohms in R1). The evaluation board also includes options to drive the LO differentially through a balun along with pads that can be used to implement a harmonic filter in the LO path.
The AD-FMCOMMS1-EBZ high-speed analog module is designed to showcase the latest generation high-speed data converters. The AD-FMCOMMS1-EBZ provides the analog front-end for a wide range of compute-intensive FPGA-based radio applications.
The AD-FMCOMMS1-EBZ is an analog front end hardware platform that addresses a broad range of research, academic, industrial and defense applications. The AD-FMCOMMS1-EBZ enables RF applications from 400MHz to 4 GHz. The module is customizable to a wide range of frequencies by software without any hardware changes, providing options for GPS or IEEE 1588 Synchronization, and MIMO configurations.
When combined with the Xilinx ZYNQ® Software-Defined Radio Kit, AD-FMCOMMS1-EBZ enables a variety of wireless communications functions at the physical layer, from baseband to RF. With up to 4 GB of flash storage space, 512 MB of RAM, Gigabit Ethernet interface (depending on the base platform) and a Linux image built specifically for the AD-FMCOMMS1-EBZ, you can get everything you need for a easy out of the box experience. The platform offers enough flexibility for many applications, and supports streaming data, and standard web interfaces to analyze transmitted RF data.
- Electronic test and measurement equipment
- General-purpose software radios
- Radar systems
- Ultra wideband satellite receivers
- Point to point communication systems
Recommended Differential Dual Baseband TxDAC's
- For even lower power requirements up to 125MSPS: AD9717.
- For direct conversion transmit applications up to 500 MSPS: AD9783, AD9122, AD9122.
- For higher bandwidths using data rates up to 250MSPS, with low noise and IMD: AD9747, AD9125, AD9125.
- For generating differential I and Q currents up to 125MSPS: AD9117.
- For ultrlow noise and IMD at 1000MSPS: AD9125, AD9122, AD9122, AD9125, AD9146.
Recommended Low-Noise Voltage Regulators
- For a fixed 5V, 500mA low dropout regulator with reverse current protection: ADP7104.
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