HX710B 24Bit ADC

Based on Avia Semiconductor’s patented technology, HX710(A/B) is a precision 24-bit analog-to-digital converter (ADC) with built-in temperature sensor (HX710A) or DVDD, AVDD voltage difference detection.

It’s designed for weigh scales and industrial control applications to interface directly with a bridge sensor. The input low-noise amplifier (PGA) has a fixed gain of 128, corresponding to a full-scale differential input voltage of ±20mV, when a 5V reference voltage is connected to the VREF pin. On chip oscillator provides the system clock without any external component. On-chip poweron-reset circuitry simplifies digital interface initialization. There is no programming needed for the internal registers. All controls to the HX710 are through the pins.

Features of HX710B

• On-chip temperature measurement (HX701A)

• DVDD and AVDD supply voltage difference measurement (HX701B)

• On-chip low noise amplifier with a gain of 128

• On-chip oscillator requiring no external component

• On-chip power-on-reset

• Simple digital control and serial interface : pin-driven controls, no programming needed

• Selectable 10SPS or 40SPS output data rate

• Simultaneous 50 and 60Hz supply rejection

• Current consumption:normal operation < 1.2mA, power down < 1uA

• Operation supply voltage range : 2.6 ~ 5.5V

• Operation temperature range : -40 ~ +85ć

• 8 pin SOP-8 package