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

Product Attributes

Introduction

HCT6511 is a dual-channel, 24-bit high-precision ADC with an SPI interface. It integrates a programmable low-noise amplifier with selectable gains of 1, 32, 64, or 128, a high-precision Sigma-Delta ADC, a voltage reference, and a high-frequency internal RC clock source. At 128× PGA configuration, the ADC achieves an effective resolution of 19.8 bits, with an equivalent input noise as low as 16nV/√Hz and a zero-point drift of 5μV.

Features

• Operating voltage range: 2.5V ~ 5.5V
• Operating current: 0.7mA in active mode, 0.3μA in low-power mode
• Integrated low-noise programmable gain amplifier (PGA) with configurable gains of 1, 32, 64, or 128
• Dual-channel differential signal input
• Integrated 24-bit Sigma-Delta ADC with high precision and low offset drift
• Four selectable output data rates: 10Hz, 20Hz, 320Hz, and 640Hz
• Linearity: 0.001% of full scale
• Noise level: 16nV/√Hz at 128× PGA configuration
• Offset drift: 5μV at 64× or 128× PGA configuration
• Integrated 3.9MHz internal high-frequency RC oscillator with 1% temperature drift (over -40℃ ~ 85℃)
• Integrated voltage reference with 20ppm/√℃ temperature drift; defaults to external reference input
• Built-in low-impedance power switch for controlling bridge sensor resistive path to reduce power consumption
• 2-wire or 3-wire SPI interface
• Communication clock frequency up to 2MHz
• Single-register read/write operation
• CRC protection for read/write operations
• Operating temperature range: -40℃ ~ +105℃
• Storage temperature range: -40℃ ~ +125℃
• Package: SSOP16

Applications

• Electronic scales
• Analytical balances
• Industrial process control
• DC/AC power measurement
• Ear thermometers