HX710C – 24-Bit Bridge-Sensor ADC – Avia Semiconductor

The HX710C is a 24-bit sigma-delta analog-to-digital converter from Avia Semiconductor, featuring a low-noise PGA (gain of 128), an external reference input, and an on-chip load-cell power switch in an SOP-8 package for precision weigh-scale and bridge-sensor applications.

The HX710C from Avia Semiconductor (Xiamen) is a precision 24-bit sigma-delta analog-to-digital converter (ADC) designed for high-resolution measurement of bridge-type sensors such as load cells and pressure transducers. It integrates a low-noise programmable gain amplifier, an on-chip oscillator, and a load-cell power switch, allowing it to interface directly with a bridge sensor while requiring very few external components. Unlike the HX710A/HX710B variants, the HX710C provides a dedicated external reference input (VREF), giving designers flexibility to set full-scale range based on the supply or an external reference.

Note on branding: this part is sometimes cross-listed under “ChipSea,” but the device is manufactured and documented by Avia Semiconductor (Xiamen) Co., Ltd. and is marked “AVIA SEMICONDUCTOR” in the datasheet.

Key Features

• 24-bit sigma-delta ADC resolution
• On-chip low-noise programmable gain amplifier with a fixed gain of 128 (full-scale differential input of approximately +/-20 mV at a 5 V reference)
• Differential analog inputs (INP / INN) for direct bridge-sensor connection
• External reference input (VREF), 1.8 V to 5.5 V and not exceeding VDD
• Selectable output data rate of 10 Hz or 40 Hz
• On-chip oscillator; no external clock components required
• Integrated load-cell power switch (VOUT) for sensor power sequencing
• Simple two-wire serial digital interface (PD_SCK clock, DOUT data) with power-down control
• Supply voltage range of 2.6 V to 5.5 V
• Operating temperature range of -40 C to +85 C
• SOP-8 surface-mount package

Applications

• Electronic and industrial weigh scales
• Load-cell and strain-gauge measurement systems
• Digital pressure and barometric sensor modules
• Bridge-sensor signal acquisition front ends
• Industrial measurement and process control instrumentation
• Embedded and microcontroller-based sensor interfaces

Why Source HX710C from Pacific Component Xchange

The HX710C has little to no authorized-distributor availability in Western supply channels, making it a challenging part to source reliably for production and service needs. Pacific Component Xchange is an independent distributor specializing in hard-to-find, allocated, and obsolete memory and semiconductor components. We currently have stock available for the HX710C and can support volume requirements.

Every order is backed by our commitment to authenticity, inspection, and quality assurance, with global shipping to support customers worldwide. Because this is a scarce part with no public pricing, the HX710C is offered on a request-for-quote basis. Submit an RFQ today for current pricing, lead time, and available quantity, and our sourcing team will respond promptly.