24-bit Sigma-Delta ADC with PGA — precision measurement front end
The Texas Instruments ADS1256IDBT is a 24-bit Sigma-Delta analog-to-digital converter with an integrated programmable gain amplifier (PGA), designed for precision measurement applications that require high resolution over a moderate bandwidth. It samples at 30 kSPS and accepts both differential and single-ended inputs through an input multiplexer that can handle up to 4 differential or 8 single-ended channels. The SPI data interface and external voltage reference architecture make it a straightforward fit for systems where the reference accuracy and drift are controlled by the board-level design.
Supply rails and digital interface — what the 3.3 V logic means for your MCU
The 28-SSOP package (0.209-inch body width) is a standard fine-pitch surface-mount footprint that routes comfortably on a two-layer board if the analog and digital grounds are split cleanly under the device.