Analog Devices Highlights Wireless Infrastructure Solutions
"High-performance ICs from ADI can be found almost everywhere in the wireless infrastructure signal chain—from the analog radio frequency (RF) front end to digital signal processing," said Peter Real, product line director, RF and Networking Components, Analog Devices. "Cellular phones are evolving from voice-only communication devices to multimedia terminals with complex audio, imaging, and data processing functions that can be used anywhere in the world, and technologies such as WiMAX are creating new options for high-speed wireless connectivity. ADI is enabling these market shifts with continuous investment in a strong portfolio of proven solutions that address the cost, functionality, performance and reliability requirements of advanced wireless infrastructure technologies."
In booth 2209 of the MTT wireless conference, ADI will display a variety of RF technologies, including wireless infrastructure solutions designed to handle the complex signal processing challenges of current and next-generation base stations for single or multicarrier, direct conversion or superheterodyne radio designs.
ADF4108, 8 GHz PLL
Introduced today, ADI claims the ADF4108 is the industry's first 8 GHz phase-locked loop (PLL) synthesizer. The device can be used to implement local oscillators in the up-conversion and down-conversion sections of wireless receivers and transmitters in high-frequency wireless systems. Because of its high-frequency operation, the ADF4108 can eliminate the need for frequency doublers.
Quadrature Modulators Support all Wireless Standards
ADI will highlight the newest members of its portfolio of quadrature modulators including:
- 50 MHz to 2.2 GHz RF/IF quadrature modulator – announced today, the ADL5385 quadrature modulator operates from 50 MHz to 2200 MHz, making it suitable for low intermediate frequency (IF) and RF applications such as broadband wireless access systems, microwave radio link transmitters, cable modem termination systems and cellular infrastructure.
- Family of 250 MHz to 4 GHz quadrature modulators – recently introduced, the ADL537x family of five pin-compatible quadrature modulators enable wireless system engineers to standardize board designs across multiple operating bands and cellular standards and features a direct interface to ADI's family of TxDAC+ transmit digital-to-analog converters. Each of the five quadrature modulators is optimized for a specific frequency band.
Matching Pre-Driver Amplifiers
Recently announced, the ADL5322 and ADL5323 are highly linear, fixed-gain RF amplifiers that integrate matching networks on a single chip. The ADL5322 and ADL5323 are suitable for use with ADI's ADL537x family and ADL5385 quadrature modulators to provide a highly linear, compact transmit signal path.
Two-Channel Logarithmic Detector
Announced today, the ADL5519 is a dual logarithmic detector that measures and controls the gain across the transmitter and receiver signal path. The device integrates two matched logarithmic detectors on a single chip and covers a wide frequency range of 1 MHz to 10 GHz.
Design Tool Speeds Time-to-Market
Removing time-consuming iterations from the design process, the recently introduced ADIsimPLL Version 3.0 is the latest generation of ADI's successful PLL circuit design and evaluation tool, and is a member of ADI's portfolio of RF development tools, which includes the ADIsimADC, ADIsimCLK and ADIismLINK. Offered as a free download on the ADI website, ADIsimPLL provides a PLL design and simulation package for Analog Devices' range of PLL frequency synthesizers.
Reducing the Complexity of Frequency Synthesis
Demonstrating its leadership in direct digital synthesis (DDS) technology, ADI is exhibiting a 500 mega-samples-per-second (MSPS) DDS device with an integrated 10-bit digital-to-analog converter (DAC). The AD9911 is suited for multi-tone modulation as it allows designers to internally mix DDS signals digitally prior to analog conversion and modulate frequency, phase and amplitude.
Low-Power, Single-Chip RF ICs
In addition to highlighting wireless infrastructure solutions, ADI will demonstrate its flexible, highly-integrated ADF7012 single chip VHF/UHF transmitter IC, which addresses the need for low-rate wireless connectivity. The ADF7012 features 50 MHz to 1 GHz frequency operation, allowing multiple frequency plans to be implemented for transmit applications including RF remote controls, remote keyless entry and wireless sensor applications.
SOURCE: Analog Devices, Inc.