Digital isolator features integrated transformer driver and PWM controller
October 21, 2010 // Paul Buckley
Analog Devices, Inc., has introduced what the company claims is the industry’s first digital isolator with an integrated transformer driver and PWM (pulse-width modulation) controller in a single package.
The integration of the components into a small, surface mount 20-lead SSOP (shrink small outline package) enables the new four-channel digital isolator to reduce board space by up to 30 percent and achieve cost reductions of 10 percent while simplifying the development of systems requiring isolated data and power. The product enables designers to implement an isolated dc-to-dc converter that provides up to 2 watts of regulated, isolated power at 3.3 V to 30 V from a 5.0-V input supply or 3.3-V supply. Analog Devices new ADuM347x digital isolators are ideal for applications that require isolated data and isolated power, including data acquisition, industrial process control using Fieldbus, and building control. Watch a video on the ADuM347x digital isolators.
The new devices expand ADI’s iCoupler digital isolation portfolio, which provides an extensive range of isolation technology. The ADuM347x isolators, along with other products in the portfolio, enable designers to implement isolation in their designs without the cost, size, power, performance, and reliability constraints found with traditional isolation products, such as optocouplers.
The ADuM347x four-channel digital isolators include the ADuM3470, ADuM3471, ADuM3472, ADuM3473, and ADuM3474 products. These four-channel products provide four independent data isolation channels in various channel configurations and data rates up to 25 Mbps. Each device also provides a transformer driver and PWM controller with isolated feedback to provide a regulated output with up to 70 percent efficiency. The ADuM347x also offers 2500-V rms isolation using ADI’s patented iCoupler digital isolation technology.
The EVAL-ADuM3471EBZ evaluation board is comprised of two independent and isolated dc-to-dc converter circuits that demonstrate single and double supply applications for the ADuM347x digital isolators. The dc-to-dc converter switching frequency may be adjusted within the range of 200 kHz to 1 MHz. The board also supports a variety of I/O configurations to allow easy evaluation of the ADuM347x devices.
Availability and Pricing
Production quantities of the ADuM347x devices packaged in 20-lead SSOPs are available now. Prices are $2.88 each per 1,000.
Visit Analog Devices at www.analog.com
Beyond programmability: full design observability at runtime
October 01, 2014
After the successful launch of two generations of ABAX general-purpose 3D programmable logic devices (3PLDs) based on its ...
Nikola Tesla's lab could speak to future generations
Macronix rolls out European expansion plan
Intel leads non-iPad tablet processor market
Could low-power 3D nanomagnetic logic replace transistors?
Oscilloscope engine plugs into portable Apple products
September 30, 2014
This month, Oscium is giving away three of its iMSO-204L dual analogue iOS oscilloscopes, worth USD400 each. Designed with ...
BMW joins forces with Baidu for automated driving
Self-tuning acoustic-ready chip increases audio focus
16nm FinFETs boost ARM's 64-bit big.LITTLE
- Solutions for Millimeter Wave Wireless Backhaul
- Enter Linduino
- A Novel Approach to Industrial Rectifier Systems
- Putting FPGAs to Work in Software Radio Systems Handbook
InterviewCEO interview: AMS' Laney on driving a sensor-driven business
Kirk Laney, CEO of Austrian mixed-signal chip and sensor company AMS, wants to leverage the opportunity that technology affords to create new markets for sensors and sensor interfaces.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Oscium is giving away three of its iMSO-204L dual analogue iOS oscilloscopes, worth USD400 each. Designed with native Lightning compatibility, the iMSO-204L transforms the iPad, iPhone, and iPod touch into an ultra-portable, two-channel oscilloscope.
Since Apple changed its connector, Oscium has been working to bring native compatibility to its customers. The third generation...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.