ADS1234IPWRG4

24位模拟数字转换器用于桥式传感器 24-Bit Analog-to-Digital Converter For Bridge Sensors

DESCRIPON

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