DESCRIPTION
●The ADS1232 and ADS1234 are precision 24-bit analog-to-digital converters (ADCs). With an onboard, low-noise programmable gain amplifier (PGA), precision delta-sigma ADC and internal oscillator, the ADS1232/4 provide a complete front-end solution for bridge sensor applications including weigh scales, strain gauges and pressure sensors.
●FEATURES
●• Complete Front-End for Bridge Sensors
●• Up to 23.5 Effective Bits
●• Onboard, Low-Noise PGA
●• RMS Noise:
● 17nV at 10SPS (PGA = 128)
● 44nV at 80SPS (PGA = 128)
●• 19.2-Bit Noise-Free Resolution at Gain = 64
●• Over 100dB Simultaneous 50Hz and 60Hz Rejection
●• Flexible Clocking: Low-Drift Onboard Oscillator (±3%) Optional External Crystal
●• Selectable Gains of 1, 2, 64, and 128
●• Easy Ratiometric Measurements–External Voltage Reference up to 5V
●• Selectable 10SPS or 80SPS Data Rates
●• Two-Channel Differential Input with Built-In Temperature Sensor (ADS1232)
●• Four-Channel Differential Input (ADS1234)
●• Simple Serial Digital Interface
●• Supply Range: 2.7V to 5.3V
●• –40°C to +105°C Temperature Range
●APPLICATIONS
●• Weigh Scales
●• Strain Gauges
●• Pressure Sensors
●• Industrial Process Control
