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

Product Attributes

Introduction

The SIG5530A is a low noise, low drift, and high-resolution 24-bit analog-to-digital converter (ADC) with integrated gain amplifier that offers high-accuracy measurement solutions for bridge sensors. The device contains an ultra-low-noise amplifier with fixed gain 64, a delta-sigma (Δ-Σ) modulator, and a programmable SINC3/SINC1 digital filter. For SIG5530A, the output data rate can be configured to 1.875, 3.75, 7.5, 15, 30, 60, 120, 240, 480, 960, and 1920SPS. Burnout current sources are provided at the analog inputs for sensor connection diagnosis. Offset and gain calibration registers are provided with calibration command or direct register write to calibrate the ADC errors or overall system errors. SPI-compatible interface is used for device configuration and parity check is provided for data integrity. The on-chip oscillator, an external clock, or an external crystal can be used as the clock source to the device. The device can operate with bipolar ±2.375V to ±2.625V analog power supplies, or with a single 4.75V to 5.25V analog power supply. The SIG5530A is available in 20-lead TSSOP package. These devices are fully specified over the -40°C to +125°C temperature range. The SIG5530C is low cost version of SIG5530A and only supports data rate among 1.875, 3.75, 7.5, 15, 30, 60, 120, and 240SPS.

Features

• Amplifier Gain: 64
• Selectable Data Rates: 1.875 to 1920SPS (SIG5530A) 1.875 to 240SPS (SIG5530C)
• RMS Noise: 16nV at 7.5SPS
• 20.4 Noise-Free Bits at 1.875SPS
• Offset Drift: 5nV/°C
• Gain Drift: 0.5ppm/°C
• Integral Non-Linearity: 3ppm
• Internal or External Clock
• Burnout Current Sources
• Parity Check
• Power Supply AVDD: 4.75V to 5.25V or ±2.5V DVDD: 2.7V to 5.25V
• Current: 4.0mA
• Package: 20-lead TSSOP

Applications

• Weigh Scales
• Strain Gauges
• Pressure Sensors
• Industrial Process Control