Texas Instruments ADS131M02
The ADS131M02 is a two-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 an excellent fit for energy metering, power metrology, and circuit breaker applications. The ADC inputs can be directly interfaced to a resistordivider network or a power transformer to measure voltage or to a current transformer, shunt, or a Rogowski coil to measure current. The individual ADC channels can be independently configured depending on the sensor input.| Part No. | ADS131M02 |
|---|---|
| Datasheet | ADS131M02 Download |
| Manufacturer |  Texas Instruments |
| Description | 2-Channel 24-Bit Delta-Sigma ADC |
| Buy | Stock & Price |
FEATURES
● 2 simultaneously sampling differential inputs● Programmable data rate up to 64 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: – Input impedance of 330 kΩ for gains of 1, 2, and 4 – Input impedance of ≥1 MΩ for gains of 8, 16, 32, 64, and 128
● Programmable channel-to-channel phase delay calibration: – 244-ns resolution, 8.192-MHz fCLKIN
● Current-detect mode allows for extremely low power tamper detection
● Integrated negative charge pump allows input signals below ground
● Crosstalk between channels: –120 dB
● Low-drift internal voltage reference
● Cyclic redundancy check (CRC) on communications and register map
● 2.7-V to 3.6-V analog and digital supplies
● Low power consumption: 2.3 mW at 3-V AVDD and DVDD
● Packages: 20-pin TSSOP or 20-pin WQFN
● Operating temperature range: –40°C to +12...
