AD71056 Overview
Key Features
- The only analog circuitry used in the AD71056 is in the Σ-Δ ADCs and reference circuit
- All other signal processing, such as multiplication and filtering, is carried out in the digital domain
- This approach provides superior stability and accuracy over time and in extreme environmental conditions
- The AD71056 supplies average real power information on F1 and F2, the low frequency outputs
- These outputs either directly drive an electromechanical counter or interface with an MCU
- The high frequency CF logic output, ideal for calibration purposes, provides instantaneous real power information
- The AD71056 includes a power supply monitoring circuit on the VDD supply pin
- The AD71056 remains inactive until the supply voltage on VDD reaches approximately 4 V
- If the supply falls below 4 V, the AD71056 also remains inactive and the F1, F2, and CF outputs are in their nonactive modes
