Unterpremstaetten, Austriaaustriamicrosystems has introduced the AS1542, a multi-channel successive-approximation A/D converter that delivers a 1-Msps speed with 16 input channels.
The AS1542 offers 12-bit resolution on each of the sixteen input channels and uses advanced design techniques to achieve low power dissipation at high throughput rates. At a conversion speed of 1Msps, the AS1542 uses 2.4-mA, while in automatic shutdown mode the supply current drops to less than 0.5-µA.
The 16 input channels are software configurable as 16-channel single-ended or 8-channel fully-differential analog inputs. Additionally, a sequencer and channel counter allows continuous or single conversions on selected channels without further user input and interruption of conversions while reprogramming the A/D converter. This allows the channel selection function to be altered while the sequence is in progress.
This AS1542 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 A/D converter's supply voltage.
The AS1542 is available in a 28-pin TSSOP package suitable for operating environments ranging from -40°C to +85°C.
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austriamicrosystems, 1-919-676-5292, www.austriamicrosystems.com