مدار مجتمع (آی سی) آی‌سی جمع‌آوری داده مبدل آنالوگ به دیجیتال (ای‌دی‌سی)

Product Attributes

Introduction

HX717 is a 24-bit ADC chip designed for high-precision electronic scales. Compared to similar chips, it integrates peripheral circuits required by other chips of the same type — including a regulated power supply and an on-chip clock oscillator — offering advantages such as high integration, fast response, and strong noise immunity. This reduces the overall cost of electronic scales while improving system performance and reliability.

The interface and programming between this chip and the backend MCU are straightforward: all control signals are pin-driven, eliminating the need to program internal registers. The input multiplexer can select either Channel A or Channel B, both connected to an internal low-noise programmable gain amplifier. Channel A supports programmable gains of 128 or 64; Channel B supports programmable gains of 64 or 8. The on-chip regulated power supply can directly power external sensors, eliminating the need for a separate analog power supply on the system board. The on-chip clock oscillator requires no external components.

Features

• Dual selectable differential inputs
• On-chip low-noise programmable amplifier with selectable gains of 8, 64, and 128
• On-chip voltage regulator for direct power supply to external sensors
• On-chip clock oscillator requires no external components; external clock option available when needed
• Simple digital control and serial communication: all controls via pin inputs, no on-chip register programming required
• Selectable output data rates: 10, 20, 80, or 320Hz
• Simultaneous rejection of 50Hz and 60Hz power line interference
• Current consumption (including voltage regulator): typical operating current 1.5mA, power-down current <1μA
• Supply voltage range: 2.7～5.5V
• Operating temperature range: -40～+85℃
• 16-pin SOP-16 package