An ultra-small sensor interface device that uses low power ZoomingADC signal amplification circuitry to connect directly to a wide variety of pressure, temperature and magnetic sensors, making it one of the most versatile data acquisition devices available on the market, is available from Solid State Supplies.

Enabling electronics to be co-located with the sensor, the digital output from the SX8273 sensor, whether it is magnetic, pressure or chemical, gives manufacturers of industrial pressure/temperature sensing equipment to provide a cost effective and complete solution to their customers.

Capable of operating from a single Li-Ion battery without loss of its 16-bit precision even with a depleted battery, the device features  ZoomingADC, a 10-bit preamplifier with a programmable gain of between 0.1 and 1,000 and a 16-bit ADC. The preamplifier delivers the highest possible gain available, giving designers the freedom to achieve a given level of sensitivity using lower cost, sensors.

Four digital GPIO lines enable the component to read most Wheatstone bridge sensors and with flexible signal input, the SX8723 provides designers with the opportunity to drive down the cost of their systems through the use of low-cost sensors. The 4x4mm device can adapt to multiple sensor systems. Its digital outputs are used to bias or reset the sensing elements.

Programmable from 6 bits to 16 bits with very flexible gain (0.1x to 1000x in 10% steps), the SX8723 allows for both positive and negative inputs to the ADC. Typical active current depends on resolution and sampling frequency but at 16 bits with 1 kHz it is a typical 250 µA. A sleep mode takes this down to a maximum of 1 µA.