Austriamicrosystems has introduced the AS1542, a multi-channel successive-approximation ADC. The speed of 1Msps combined with 16 input channels makes the AS1542 ideal for networking equipment, motor control, industrial automation, wired and wireless communications and all forms of data acquisition says austriamicro. The AS1542 offers 12-bit resolution on each of the sixteen input channels. At a conversion speed of 1Msps the AS1542 uses 2.4mA, while in automatic shutdown mode the supply current drops to 0.5µA. 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 ADC.

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 ADC’s supply voltage. The ADC can be interfaced via a SPI/QSPI/Microwire or DSP interface. The AS1542 is available in a 28-pin TSSOP package suitable for operating environments ranging from -40°C to +85°C.

Product-specific information and free samples via austriamicrosystems’ online shop ICdirect are available at