ADS1255IDBR

The ADS1255IDBR is a 24-bit, 30kSPS analog-to-digital converter (ADC) from Texas Instruments, utilizing a Sigma-Delta architecture. It offers a resolution of 24 bits with a maximum sampling rate of 30 kSPS, providing up to 23 bits of noise-free resolution. The device includes a multiplexed input configuration supporting both differential and single-ended inputs, along with a programmable gain amplifier (PGA) for signal conditioning. The input voltage range is 0 V to 5.25 V, with an external reference required.

Electrical characteristics include a typical power consumption of 36 mW in normal mode and 0.4 mW in standby mode. The analog supply voltage range is 4.75 V to 5.25 V, while the digital supply voltage range is 1.8 V to 3.6 V. The ADC features a SPI serial interface for communication and includes integrated features such as 50/60 Hz rejection and general-purpose I/O (GPIO). The integral nonlinearity (INL) is ±0.0010% maximum, and input-referred noise is 27 nV typical with the PGA enabled.

The device is housed in a 20-SSOP surface mount package with dimensions of 5.30 mm width and 7.8 mm length. It is designed for operation over a temperature range of -40°C to 85°C. The ADS1255IDBR is suitable for precision measurement applications requiring high resolution and low noise.