JAJSIU8B June 2015 – April 2020 ADS131E08S
The ADS131E08S is a low-power, 8-channel, simultaneously-sampling, 24-bit, delta-sigma (ΔΣ), analog-to-digital converter (ADC) with an integrated programmable gain amplifier (PGA) and short start-up time. The analog device performance across a scalable data rate makes the device well-suited for smart-grid and other industrial power monitor, control, and protection applications.
The ADS131E08S has a programmable multiplexer that allows for various internal monitoring signal measurements including temperature, supply, and input short for device noise testing. The PGA gain can be chosen from one of five settings: 1, 2, 4, 8, or 12. The ADCs in the device offer data rates of 1 kSPS, 2 kSPS, 4 kSPS, 8 kSPS, 16 kSPS, 32 kSPS, and 64 kSPS. The device communicates using a serial peripheral interface (SPI)-compatible interface. The device provides four general-purpose I/O (GPIO) pins for general use. Use multiple devices to easily add channels to the system and synchronize them with the START pins.
Program the internal reference to either 2.4 V or 4 V. The internal oscillator generates a 2.048-MHz clock. Use the integrated comparators, with programmable trigger-points, for input overrange or underrange detection. A detailed diagram of the ADS131E08S is provided in the Functional Block Diagram section.