ADS1261BQWRHMRQ1

The ADS1261BQWRHMRQ1 is a 24-bit delta-sigma analog-to-digital converter (ADC) from Texas Instruments, designed for automotive and industrial precision measurement applications. It features a maximum sample rate of 40 kSPS, 10 differential input channels, and a programmable gain amplifier (PGA) with gain range from 1 to 128. The ADC includes an internal reference with 4 ppm/°C drift and supports both external and internal reference modes. Key specifications include offset drift of 1 nV/°C, gain drift of 0.5 ppm/°C, and noise of 30 nV RMS at 20 SPS with gain 128. The device operates from a single 4.75 V to 5.25 V analog supply or bipolar ±2.5 V supplies, with a digital supply range of 2.7 V to 5.25 V. Typical power consumption is 20 mW. The converter incorporates a multiplexer, PGA, and ADC in a single configuration (MUX-PGA-ADC) and supports SPI interface. Additional features include excitation current sources (iDACs), temperature sensor, 50/60 Hz rejection, and GPIOs. The device is packaged in a 32-VFQFN exposed pad (5 mm x 5 mm) with wettable flanks for surface mount assembly. It is AEC-Q100 qualified for automotive applications and operates over -40°C to +125°C temperature range.