HX712

HX712 is a 24-bit A/D converter IC designed for high-precision, low-power electronic scales. The chip integrates peripheral circuits required by other similar ICs, including a sensor power switch, on-chip clock oscillator, and single-ended battery voltage detection input. It features high integration, fast response, and strong noise immunity, reducing the overall cost of electronic scales while improving system performance and reliability.

Key features

• Selectable differential or single-ended input for battery level detection
• On-chip low-noise amplifier with gain of 128
• On-chip sensor power MOS switch for cutting off sensor supply during power-down, reducing sensor power consumption
• On-chip clock oscillator requires no external components; external crystal or clock can also be used when necessary
• Power-on auto-reset circuit
• Simple digital control and serial communication: all controls via pin inputs, no on-chip register programming required
• Selectable output data rate: 10Hz or 40Hz
• Simultaneous rejection of 50Hz and 60Hz power supply interference
• Power consumption: typical operating current 1.0mA, power-down current 1μA
• Operating voltage range: 2.6~5.5V
• Operating temperature range: -40~+85°C
• 14-pin SOP-14 package