The AD7124-4 and AD7124-8 connect directly to all standard industrial signal sources and sensor inputs and are said to reduce power requirements by 40% over comparable devices. They are suited to industrial and instrumentation applications including low power portable equipment.
The devices offer three user-selectable power modes that allow system designers to optimise throughput rate versus required noise performance. In the lowest power mode (255 µA) the converter delivers 21.7 noise free bits at low sampling rates. The selectable power modes allow designers of programmable-logic controllers, process controllers, transmission systems and other industrial and instrumentation equipment to develop a single platform by matching power and performance requirements for each use case.
The AFEs operate with a single power supply from 2.7 to 3.6V or a dual 1.8V power supply. The digital supply has a range of 1.65 to 3.6V. It is specified for a temperature range of -40 to 105°C. Both devices are housed in a 32-lead LFCSP package or the AD7124-4 is also available in a 24-lead TSSOP package.
