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:

Module provides 4G LTE Cat 1 bis connectivity
Dizzy Enterprises Telecoms, Datacoms, Wireless, IoT
Mikroe adds 4G LTE Cat 1 bis connectivity where reliable data transmission and low power consumption are critical with the GC02S1-EU2 module.

Read more...

---

Enabling next-generation FPGA and SDR innovation
RFiber Solutions Telecoms, Datacoms, Wireless, IoT
Puzhi Electronic Technology has established itself as a dynamic provider of advanced ARM and FPGA-based solutions, delivering a comprehensive ecosystem of products designed for modern embedded and high-performance computing applications.

Read more...

---

Magnetic mount antenna takes the hassle out of 4G installations
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
Designed for fast, tool-free installation, the YECN022CA 4G magnetic mount whip monopole antenna gives wireless devices a dependable cellular link in the field, where installation time and signal reliability both matters.

Read more...

---

Engineering for failure: why resilient telemetry matters more than perfect connectivity
Editor's Choice Telecoms, Datacoms, Wireless, IoT
One of the biggest assumptions in modern tracking systems is that connectivity will always be available. From an engineering perspective, this creates an interesting problem.

Read more...

---

Wi-Fi and Bluetooth smart module series integrates intelligence
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
Quectel Wireless Solutions has expanded its smart module portfolio with the SH503FM, a new-generation series of Wi-Fi and Bluetooth smart modules.

Read more...

---

Powering smart sensor networks
CST Electronics Telecoms, Datacoms, Wireless, IoT
NeoCortec’s NeoMesh wireless mesh networking protocol and software stack is ideally suited for powering smart sensor networks where each device is required to send and receive small packets of data infrequently, but with high reliability.

Read more...

---

Lessons in long-distance telemetry
Omniflex Remote Monitoring Specialists Telecoms, Datacoms, Wireless, IoT
Ian Loudon, international sales and marketing manager at Omniflex, reflects on some of the key engineering lessons learned from decades of deploying wireless telemetry systems in demanding industrial applications.

Read more...

---

PEAK’s first automotive Ethernet solution
Industrial Data Xchange (IDX) Editor's Choice Telecoms, Datacoms, Wireless, IoT
The PAE-Media Converter is a robust and compact device designed to connect Automotive Ethernet (100BASE-T1 or 1000BASE-T1) with standard Ethernet (100BASE-TX or 1000BASE-T) networks.

Read more...

---

Compact LTE connectivity for IoT
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
The Quectel EG916Q-GL is a compact LTE Cat 1 bis module designed to provide reliable and cost-effective cellular connectivity for IoT and M2M applications.

Read more...

---

Precision timing in compact package
Altron Arrow Telecoms, Datacoms, Wireless, IoT
Designed for use in harsh environments, the EX-423 incorporates a four-point mounted quartz crystal structure that improves shock resistance and reduces g-sensitivity.

Read more...

---