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ADCs target battery-run devices, portable DAQ apps

Posted: 16 Nov 2006 ?? ?Print Version ?Bookmark and Share

Keywords:austriamicrosystems? ADC? AS1526/27? DAQ? austriamicro?

AS1526/27 ADCs from austriamicrosystems

austriamicrosystems has expanded its ADC portfolio with the new AS1526/27 family of 10bit, single-channel, ultralow-power ADCs. Combining ultralow-power operation at a high sampling speed of 73KSps with dynamic performance in a small SOIC-8 package, the company said the AS1526/27 family is suitable for battery-powered devices and portable DAQ systems such as remote sensors or pen digitizers.

AS1526, which features an internal 2.5V reference, consumes 4mW at 3V. On the other hand, the AS1527, which requires an external reference, needs 3mW at 3V at the 73KSps maximum sampling rate. Both parts operate from a 2.7-5.25V single supply.

Software power-down further reduces current consumption to 0.3?A in shutdown mode. This decreases total power consumption to 22?A at sampling rates of 1KSps (AS1527).

"This type of ADC is ideal for applications with demanding power consumption and space requirements, and a high conversion speed can still be achieved," said Walter Moshammer, marketing director for standard linear at austriamicrosystems.

SPI, QSPI and a Microwire-compatible interface enable high-speed data access while minimizing board space, while an integrated 2.5V reference reduces external component count. Both devices contain an internal clock although they also support an external clock for increased flexibility.

The AS1526/27 family is available in an 8-pin SOIC package, suitable for operating environments ranging from -40C to 85C. Product-specific information and free samples are available at austriamicrosystems.

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