SBASA81B January 2023 – October 2024 ADS9815 , ADS9817
PRODUCTION DATA
The ADS981x is an 18-bit data acquisition (DAQ) system with eight-channel analog inputs that can be configured as either single-ended or differential. Each analog input channel consists of an input clamp protection circuit, and a programmable gain amplifier (PGA) with user-selectable bandwidth options. The input signals are digitized using an 18-bit analog-to-digital converter (ADC), based on the successive approximation register (SAR) architecture. This overall system can achieve a maximum throughput of 2 MSPS/channel for all channels. The device features a 4.096V internal reference with a fast-settling buffer.
The device operates from 5V and 1.8V analog supplies and can accommodate true bipolar input signals. The input clamp protection circuitry can tolerate voltages up to ±18V. The device offers a constant 1MΩ resistive input impedance irrespective of the sampling frequency or the selected input range. The ADS981x offers a simplified end solution without requiring external high-voltage bipolar supplies and complicated driver circuits.