CAMEL RF

Providing 1M-sample/sec conversion speed using 2.4 mA suits the AS1542 multichannel successive-approximation ADC for networking equipment, motor control, industrial automation, wired and wireless communications, and other forms of data acquisition. Providing 12-bit resolution on each of the 16 input channels, the channels are software configurable as 16-channel single-ended or eight-channel fully-differential analog inputs. Features include a 2.7 to 5.25V supply voltage, a –40 to +85°C temperature range, and a 0.5-µA supply current in automatic-shutdown mode. The converter includes a Vdrive (interface-drive voltage) function enabling a serial interface connecting to 3 or 5V processor systems independent of the ADC’s supply voltage. A sequencer and channel-counter allow continuous or single conversions on selected channels with no addition user input or interruption of conversions. The device can be interfaced using a high-speed SPI (serial-peripheral interface)/QSPI (queued-serial-peripheral interface)/Microwire or DSP (digital-signal-processing) interface. The AS1542 successive-approximation ADC costs $4.88 (1000).

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