ADS1283

Product Folder Order Now Technical Documents Tools & Software Support & Community ADS1283 SBAS565C – JANUARY 2014 – REVISED AUGUST 2019 ADS1283 High-Resolution, Analog-to-Digital Converter 1 Features 1 High Resolution: – SNR: 130 dB (250 SPS, PGA = 1) High Accuracy: – THD: –122 dB Low Power Consumption: – 18 mW (PGA = 1, 2, 4, or 8) – Shutdown Mode: 10 μW Low-Noise PGA: 5 nV/√Hz Two-Channel Input Multiplexer Inherently-Stable Modulator With Fast Responding Overrange Detector Flexible Digital Filter: – Sinc + FIR + IIR (Selectable) – Linear or Minimum Phase Response – Programmable High-Pass Filter – Selectable FIR Data Rates: 250 SPS to 4 kSPS Offset and Gain Calibration Engine SYNC Input Analog Supply: 5 V or ±2.5 V Digital Supply: 1.8 V to 3.3 V 2 Applications Energy Exploration Seismic Monitoring High-Accuracy Instrumentation Simplified Schematic AVDD VREFN VREFP DVDD Input 1 Input 2 VCOM Mux PGA Overrange ADS1283 AVSS 4th-Order û Modulator Programmable Digital Filter Calibration Serial Interface DGND CCoonntrtorol l CLK CS SCLK DOUT DIN DRDY SYNC RESET PWDN 3 Description The ADS1283 is an extremely high-performance, single-chip, analog-to-digital converter (ADC) with an integrated, low-noise programmable gain amplifier (PGA) and two-channel input multiplexer (mux). The ADS1283 is suitable for the demanding needs of seismic monitoring equipment. The converter uses a fourth-order, inherently stable, delta-sigma (ΔΣ) modulat...