ADS1258IRTCRG4 Datasheet PDF - TI

●DESCRIPTION

●The ADS1258 is a 16-channel (multiplexed), low-noise, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) that provides single-cycle settled data at channel scan rates from 1.8k to 23.7k samples per second (SPS) per channel. A flexible input multiplexer accepts combinations of eight differential or 16 single-ended inputs with a full-scale differential range of 5V or true bipolar range of ±2.5V when operating with a 5V reference. The fourth-order delta-sigma modulator is followed by a fifth-order sinc digital filter optimized for low-noise performance.

●FEATURES

●• 24 Bits, No Missing Codes

●• Fixed-Channel or Automatic Channel Scan

●• Fixed-Channel Data Rate: 125kSPS

●• Auto-Scan Data Rate: 23.7kSPS/Channel

●• Single-Conversion Settled Data

●• 16 Single-Ended or 8 Differential Inputs

●• Unipolar (+5V) or Bipolar (±2.5V) Operation

●• Low Noise: 2.8μVRMS at 1.8kSPS

●• 0.0003% Integral Nonlinearity

●• DC Stability (typical): 0.02μV/°C Offset Drift, 0.4ppm/°C Gain Drift

●• Open-Sensor Detection

●• Conversion Control Pin

●• Multiplexer Output for External Signal Conditioning

●• On-Chip Temperature, Reference, Offset, Gain, and Supply Voltage Readback

●• 42mW Power Dissipation

●• Standby, Sleep, and Power-Down Modes

●• 8 General-Purpose Inputs/Outputs (GPIO)

●• 32.768kHz Crystal Oscillator or External Clock

●APPLICATIONS

●• Medical, Avionics, and Process Control

●• Machine and System Monitoring

●• Fast Scan Multi-Channel Instrumentation

●• Industrial Systems

●• Test and Measurement Systems