New family of direct digital synthesizers offers higher speed and lower power dissipation
12 March 2003
Telecoms, Datacoms, Wireless, IoT
Analog Devices has expanded the company's portfolio of radio frequency (RF) ICs with a new family of direct digital synthesizers (DDS). According to the company the new chips deliver a 400 MHz clock speed at one-tenth the power consumption of previous solutions.
This enables designers to use DDS for fast frequency hopping at higher output frequencies in more power-sensitive applications. DDS, which is the technique of digitally creating and manipulating sine waves - or other continuous wave forms - in the digital domain, is the preferred technology for applications requiring superior digital frequency agility, output phase control, and excellent phase noise performance. Typical applications include satellite communications, broadband networking, radar, test and measurement, and instrumentation.
The new DDS devices clock at 400 MSPS and synthesize frequencies up to 160 MHz while dissipating less than 200 mW of power. Previous DDS chips of comparable resolution could only synthesize frequencies up to 120 MHz and dissipated 2 W of power, says ADI. This means designers can use multiple chips on a single PCB with less concern for thermal issues. Additional features of the family include an integrated 14-bit digital-to-analog converter, on-chip random access memory (RAM), phase offset and amplitude control, and multichip synchronisation.
"Designers of radar systems and shaped FSK (frequency-shift keying) communications applications now have increased flexibility and the ability to enhance accuracy, tuning and phase control by using the automatic linear and non-linear frequency sweeping capabilities of these chips," said Kevin Kattmann, product line director for High-Speed Converters, Analog Devices. "This combination of breakthrough speed and power dissipation will extend the attributes of DDS into many new applications that were previously bound by the limitations of traditional analog synthesis technology."
The DDS family comprises four new 14-bit devices with various added benefits. The feature sets were selected to allow designers to purchase only the functionality needed for the desired application. They are:
* AD9951: Basic DDS with on-board 14-bit DAC.
* AD9952: with high-speed comparator.
* AD9953: with RAM (allows nonlinear phase/frequency sweeping).
* AD9954: with high-speed comparator, RAM, and automatic linear frequency sweep.
For more information contact Analog Data Products SA, 011 259 9400.
Further reading:
SMT-mountable card connectors
Telecoms, Datacoms, Wireless, IoT
Würth Elektronik introduces four new SMT-mountable Nano SIM and microSD card connectors and expands its range with solutions for the smallest packages.
Read more...
Module for smart city and smart utility devices
iCorp Technologies
Telecoms, Datacoms, Wireless, IoT
Quectel Wireless Solutions has launched the Quectel KCM0A5S, a high-performance Wi-SUN module designed for smart applications such as street lighting, precision agriculture, industrial IoT, smart meters and smart cities.
Read more...
Ultra-low-power wireless module
Altron Arrow
Telecoms, Datacoms, Wireless, IoT
The STM32WBA5MMG from STMicroelectronics is an ultra-low-power, small form factor, certified 2,4 GHz wireless module that supports Bluetooth LE, Zigbee 3.0, OpenThread, and IEEE 802.15.4 proprietary protocols.
Read more...
Quectel partners with GEODNET
Quectel Wireless Solutions
Telecoms, Datacoms, Wireless, IoT
Quectel Wireless Solutions has partnered with GEODNET to deliver Quectel’s Real-Time Kinematic (RTK) correction services, enabling high-precision positioning for IoT applications.
Read more...
Bringing Bluetooth Channel Sounding to automotive and beyond with KW47
Altron Arrow
Telecoms, Datacoms, Wireless, IoT
NXP’s new Channel Sounding-certified KW47 and MCX W72 wireless MCUs are set to help automakers with distance measurement, bringing an additional ranging solution for car access and autonomous systems, and will be utilised across a broader spectrum of applications.
Read more...
Dual-band GNSS antenna
RF Design
Telecoms, Datacoms, Wireless, IoT
The Taoglas Accura GVLB258.A, is a passive, dual-band GNSS L1/L5, high-performance antenna for high precision GNSS accuracy and fast positioning.
Read more...
What is Wi-Fi HaLow and why choose it for IoT?
iCorp Technologies
Editor's Choice Telecoms, Datacoms, Wireless, IoT
Wi-Fi HaLow introduces a low power connectivity option that, in contrast to other Wi-Fi options, offers greater range of approximately 1 km, which opens up a raft of IoT use cases.
Read more...
Wi-Fi 6 and Bluetooth LE coprocessor module
Altron Arrow
Telecoms, Datacoms, Wireless, IoT
The ST67W611M1 from STMicroelectronics boasts an all-in-one design which, together with its capabilities, contribute to making it an attractive choice for IoT edge devices requiring a single-chip solution.
Read more...
Futureproofing IoT connectivity
SIMcontrol
Telecoms, Datacoms, Wireless, IoT
A managed private APN assigns every device to an isolated carrier slice, producing a single ingress to the enterprise network, with traffic bypassing shared internet paths and reducing exposure.
Read more...
Extra slim 2,4 GHz radio module
Telecoms, Datacoms, Wireless, IoT
The Thyone I radio module from Würth Elektronik now has a little sibling: Thyone-e, which takes up 30% less space and represents a cost-effective alternative for applications in which the long-range mode is not required.
Read more...