ADS131M04 - Texas Instruments

ADS131M04 24-Bit Delta-Sigma ADC

The ADS131M04 is a four-channel, simultaneouslysampling, 24-bit, delta-sigma (ΔΣ), analog-to-digital converter (ADC) that offers wide dynamic range, low power, and energy-measurement-specific features, making the device excellent for energy metering, power metrology, and circuit breaker applications. The ADC inputs can be directly interfaced to a resistor-di.

Features

•1 4 simultaneously sampling differential inputs
• Programmable data rate up to 32 kSPS
• Programmable gain up to 128
• Noise performance:
  – 102-dB dynamic range at gain = 1, 4 kSPS
  – 80-dB dynamic range at gain = 64, 4 kSPS
• Total harmonic distortion:
  –100 dB
• High-impedance inputs for direct sensor connection:
  – 300-kΩ input impedance for gains of 1, 2, and 4
  – 1-MΩ input impedance for gains of 8, 16, 32, and 64
• Programmable channel-to-channel phase delay calibration:
  – 244-ns resolution, 8.192-MHz fCLKIN
• Current detect mode allows for super low power tamper detection
• Fast startup: f.