The ADS1282 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 ADS1282 is suitable for the demanding needs of energy exploration and seismic monitoring environments.
  The converter uses a fourth-order, inherently stable, delta-sigma (ΔΣ) modulator that provides outstanding noise and linearity performance. The modulator is used either in conjunction with the on-chip digital filter, or can be bypassed for use with post processing filters.
  The flexible input MUX provides an additional external input for measurement, as well as internal self-test connections. The PGA features outstanding low noise (5nV/√Hz) and high input impedance, allowing easy interfacing to geophones and hydrophones over a wide range of gains.
  The digital filter provides selectable data rates from 250 to 4000 samples per second (SPS). The high-pass filter (HPF) features an adjustable corner frequency. On-chip gain and offset scaling registers support system calibration.
  The synchronization input (SYNC) can be used to synchronize the conversions of multiple ADS1282s. The SYNC input also accepts a clock input for continuous alignment of conversions from an external source.
  Two operating modes allow optimization of noise and power. Together, the amplifier, modulator, and filter dissipate 30 mW and only 22 mW in low-power mode. The ADS1282 is fully specified from –55°C to 210°C or from –55°C to 175°C for the PW package.

  
  High Resolution: 
  122-dB SNR 
  (250 SPS, High-Resolution Mode, 210°C) 
  119-dB SNR 
  (250 SPS, Low-Power Mode, 210°C)
  High Accuracy: 
  THD: –102 dB (210°C) 
  INL: 0.5 ppm
  Low-Noise PGA
  Two-Channel Input MUX
  Inherently-Stable Modulator with Fast Responding 
  Over-Range Detection
  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
  Filter Bypass Option
  Low Power Consumption: 
  High-Resolution Mode: 30 mW (210°C) 
  Low-Power Mode: 22 mW (210°C)
  Offset and Gain Calibration Engine
  SYNC Input
  Analog Supply: 
  Unipolar (5 V) or Bipolar (±2.5 V)
  Digital Supply: 1.75 V to 3.3 V
  SUPPORTS EXTREME TEMPERATURE APPLICATIONS 
  -Controlled Baseline
  -One Assembly/Test Site
  -One Fabrication Site
  -Available in Extreme (–55°C to 210°C) Temperature Range
  -Extended Product Life Cycle
  -Extended Product-Change Notification
  -Product Traceability
  -Texas Instruments high temperature products utilize highly 
  -optimized silicon (die) solutions with design and process 
  -enhancements to maximize performance over extended temperatures.
  APPLICATIONS 
  -Energy Exploration
  -Seismic Monitoring
  -High-Accuracy Instrumentation
  -Down-Hole Drilling
  -High Temperature Environments