EDN Product fEEd

Nov 20 2007 1:18PM | Permalink | Email this | Comments (0) |
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The single-channel AS1528 and the dual-channel AS1529 ultralow-power, fully differential 10-bit ADCs sample at rates of 150k samples/sec. Targeting small battery-powered devices and portable data-acquisition systems, including remote sensors and pen digitizers with limited space requirements, the devices provide a SPI (serial-port interface), a QSPI (queued-SPI), and a microwire-compatible interface. An automatic-shutdown feature places the device into sleep mode between conversions. Additional features include 350-µA power consumption at 3V at the 150k-sample/sec rate, 245-µA power consumption at 3V at the 100k-sample/sec rate, 2.5-µA power consumption at the 1k-sample/sec, and 200-nA consumption during shutdown. The converters performance includes a ±0.275 LSB maximum for INL (integral nonlinearity) and DNL (differential nonlinearity), a ±0.25 LSB offset and gain error, and a –79.5-dB THD. Operating from a single 2.7 to 5.25V supply, the device provides a –40 to +85°C operating temperature. Available in a 3×3-mm TDFN-8 package, the AS1528 and AS1529 cost $2.88 (1000) each.

austriamicrosystems, www.austriamicrosystems.com