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Smallest D/A converter resolves space, performance challenge

Norwood, MA – Analog Devices, a provider of high-performance semiconductors for signal processing applications and the market leader in data converters, today introduced the first members of its new nano DAC family of digital-to-analog converters which provide breakthrough performance in smaller packages. Because of their compact size and low power consumption, these new digital-to-analog converters (DACs) provide significant advantages in space-constrained applications where power consumption is critical. Developed using a combination of innovative design processes and packaging techniques, the converters are ideal for voltage level setting applications used in a wide range of communications, consumer and handheld battery-powered designs including digital cameras, projectors and PDAs.

“With manufacturers designing their products in ever decreasing form factors, especially in the communications field, there has been a continual push for cost-effective components that deliver increased performance in smaller packages,” said Mike Britchfield, product line director for precision converters, Analog Devices. “The devices in the nano DAC family address these design challenges by consuming considerably less power and space than comparable solutions.”

Leading the nano DAC family's product offerings is the world's smallest, low-power D/A converter. Available in a compact SC-70 package, the AD5641 consumes 70 percent less board area and 80 percent less power than comparable devices. Delivering 14-bit resolution and guaranteed monotonic behavior with a maximum power consumption of 100 uA at 5 volts, the AD5641 combines fine output control with low power in a compact footprint. The combination of small package and low power consumption make the AD5641 ideal for voltage level setting requirements such as generating bias or control voltages in space-constrained low power wireless applications, including cell phone volume controls and screen lighting.

In addition to the AD5641, Analog Devices is introducing the AD5621 (12 bits), AD5611 (10 bits), and AD5601 (8 bits). These lower resolution devices provide suitable alternatives for applications not requiring the performance of the AD5641.

The AD5641 is designed using a combination of Analog Devices' patented “segmented string” architecture, which offers unmatched accuracy in the smallest die area, and patented advanced chip-on-lead (COL) die packaging technology. The string architecture is segmented in substrings to provide significant die size savings, while the COL assembly technology maximizes package cavity size and therefore minimizes the customer's board footprint. Both innovations enable these products to provide customers with the best value on the market today, in terms of price and performance.

The AD5641 (14 bits), AD5621 (12 bits), AD5611 (10 bits) and AD5601 (8 bits) are sampling now and will be available in production quantities in December 2004. Each part is available in 6-lead SC-70 packaging with 1K prices ranging from $0.95 to $4.75 depending on the resolution and accuracy combination.

For more information, please visit: www.analog.com

AD5601 8-bit DAC data sheet
AD5611 10-bit DAC data sheet
AD5621 12-bit DAC data sheet
AD5641 14-bit DAC data sheet

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