Texas Instruments ADS131M04 4-Channel Analog-to-Digital Converter
Texas Instruments ADS131M04 4-Channel Analog-to-Digital Converter (ADC) is a 24-bit delta-sigma (ΔΣ) ADC that offers a wide dynamic range, low power, and energy-measurement-specific features. This makes these devices excellent for energy metering, power metrology, and circuit breaker applications. The ADC inputs can be directly interfaced to a resistor-divider network or a power transformer to measure voltage or to a current transformer or a Rogowski coil to measure current.
Features
4 simultaneously sampling differential inputsProgrammable data rate up to 32kSPSProgrammable gain up to 128Noise performance102dB dynamic range at gain = 1, 4kSPS80dB dynamic range at gain = 64, 4kSPSTotal harmonic distortion: –100dBHigh-impedance inputs for direct sensor connection300kΩ input impedance for gains of 1, 2, and 41MΩ input impedance for gains of 8, 16, 32, and 64Programmable channel-to-channel phase delay calibration244ns resolution, 8.192MHz fCLKINCurrent detect mode allow for super low power tamper detection
Applications
Electricity meters: commercial and residentialCircuit breakers
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