FS7755
Description
The FS7755 is a high accuracy electrical energy measurement IC. The part specifications surpass the accuracy requirements as quoted in the IEC1036 standard.
The only analog circuitry used in the FS7755 is in the ADCs and reference circuit. All other signal processing (e.g., DSP) is carried out in the digital domain. This approach provides superior stability and accuracy over extremes in environmental conditions and over time.
The FS7755 supplies average real power information on the low-frequency outputs F1 and F2. These logic outputs may be used to directly drive an electromechanical counter or interface to an MCU. The CF logic output gives instantaneous real power information. This output is intended to be used for calibration purposes or for interfacing to an MCU.
The FS7755 includes a power supply monitoring circuit on the AVDD supply pin. The FS7755 will remain in a reset condition until the supply voltage on AVDD reaches 4V. If the supply falls below 4V, the FS7755...
