ADS1232 - 24 Bit Delta-Sigma Low Noise SPI ADC Module

ADS1232 – 24-Bit Delta-Sigma Low-Noise SPI ADC Module

Description:

A compact and precise analog-to-digital converter (ADC) module using the Texas Instruments ADS1232 chip. Designed for high-resolution, low-noise measurements, especially for weighing sensors (load cells), strain gauges, thermocouples, and other precision instrumentation via SPI interface.

Key Technical Specifications

• ADC Resolution: 24-bit (Delta-Sigma architecture)
• Noise Performance: Ultra-low noise, ideal for high-precision measurement applications
• Input Channels: Differential or single-ended inputs, typically one channel with programmable gain
• Programmable Gain Amplifier (PGA): Gain settings commonly 1×, 2×, 64×, 128×
• Interface: SPI-compatible serial interface (includes clock, data out, data in/PDWN)
• Data Rate: User-selectable (e.g., 10 SPS, 20 SPS, 80 SPS, 320 SPS or similar presets)
• Voltage Reference: Internal low-drift reference, may also support external reference input
• Operating Voltage: 2.7 V to 5.25 V (module typically runs at 5 V)
• Power Consumption: Low (varies by data rate; typically in the low milliwatt range)
• Input Range: Dependent on PGA setting; for example, ±4.5 mV to ±450 mV
• Operating Temperature: –40 °C to +85 °C (standard for electronic modules)
• PCB Board Dimensions: Approximately 23 x18 mm
• Mounting: Header pins - commonly VCC, GND, SCLK, DIN, DOUT, DRDY, etc.
• Features:
  • Power-down and data-ready pins
  • On-board voltage regulation and reference stabilization
  • Optional filter settings or digital averaging via registers

Suggested Summary Table