austriamicrosystems has expanded its micro-power A-D converter family with the new and cost efficient AS1528 10-bit, ultra-low power single-channel fully-differential A/D converter and the AS1529 dual-channel single-ended ultra-low power A/D converter. The devices are well suited to small battery powered devices and portable data acquisition systems such as remote sensors or pen digitisers with tough space requirements. Both devices consume less than 350 μA (at 3 V) at the 150 kSps maximum sampling rate. The advanced automatic shutdown feature places the devices into sleep mode between conversions, significantly reducing power consumption at lower sampling speeds. Power consumption drops to 245 μA at a reduced speed of 100 kSps, further down to 2,5 μA at 1 kSps and to 200 nA during shutdown. The AS1528/29 offer DC performance of ±0,275 LSB for INL and DNL, as well as an ultra-low offset and gain error of ±0,25 LSB combined with dynamic specifications like a THD of
-79,5 dB. SPI, QSPI and a Microwire-compatible interface enable high-speed data access.
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