At a conversion speed of 1 Msample/s and including the internal 2.5-V reference, the dual 12-bit AS1545 successive-approximation A/D converter uses only 5.5 mA, while in full power-down mode the supply current drops to less than 1 μA. Two complete and independent ADC channels allow simultaneous sampling and conversion of two channels.
The 12 input channels are software configurable allowing each ADC to offer six single-ended channels or three fully or pseudo differential pairs, as programmed. The part operates from a single 2.7 to 5.25-V supply and contains a Vdrive (interface drive voltage) function which enables the serial interface to connect directly to either 3- or 5-V processor systems independent of the ADC’s supply voltage. Available in a 32-pin TQFN package, the converter can be interfaced via a high-speed SPI/QSPI/Microwire or DSP interface. ($3.91 ea/1,000—available now.)
austriamicrosystems , Unterpremstaetten , Austria
Manfred Kogler 011-43-3136-500-5274
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