ADE7757ARNZ

ADE7757 is a high accuracy electrical energy measurement IC. It is a pin reduction version of the ADE7755 with an enhancement of a precise oscillator circuit that serves as a clock source to the chip. It eliminates the cost of an external crystal or resonator, thus reducing the overall cost of a meter built with this IC. The chip directly interfaces with the shunt resistor and operates only with ac input. It supplies average real power information on the low frequency outputs F1 and F2. These outputs may be used to 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. It includes a power supply monitoring circuit on the VDD supply pin. This device will remain inactive until the supply voltage on VDD reaches approximately 4V. If the supply falls below 4V, the device will also remain inactive and the F1, F2, and CF outputs will be in their nonactive modes.

• On-chip oscillator as clock source
• Less than 0.1% error over a dynamic range of 500 to 1
• The high frequency output CF is intended for calibration and supplies instantaneous real power
• The logic output REVP can be used to indicate a potential miswiring or negative power
• On-chip power supply monitoring, low cost CMOS process, AC input only
• Temperature coefficient is ±20ppm/°C typ at (VDD = 5V, ±5%)
• On-chip creep protection (no load threshold), on-chip reference is 2.5V
• Single 5V supply, gain error is ±4% ideal typ at (VDD = 5V, ±5%)
• Operating temperature is -40°C to +85°C
• Package style is 16-lead NSOIC

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party