ADE7755 is a digital-to-frequency converter released by Analog Devices, which is mainly used for power measurement and has the characteristics of high accuracy and high dynamic range.
The ADE7755 is a pin‑compatible energy‑metering integrated circuit that provides average real‑power information on low‑frequency outputs F1 and F2, and instantaneous power on the high‑frequency CF output. It operates from a single 5 V supply and includes on‑chip power‑supply monitoring and reference circuitry.
Key features include programmable gain (1, 2, 8, 16) for the current channel, phase‑matched voltage and current channels, low‑power consumption (≈15 mW), and a 24‑lead SSOP package. The datasheet supplies detailed specifications, pin descriptions, timing diagrams, and example calculations for designing IEC‑compliant energy meters.
| Supply Voltage (AVpp/DVpp) | 4.75 V min – 5.25 V max (5 V ± 5 %) |
|---|---|
| On‑Chip Reference Voltage | 2.5 V nominal |
| Maximum Analog Input Signal Level | +1 V max to AGND |
| Power Dissipation (Absolute Maximum) | 450 mW |
| Package | 24‑Lead SSOP |
The CF output provides instantaneous real‑power information and is intended for calibration or interfacing to a microcontroller.
Channel 1 gain can be set to 1, 2, 8, or 16.
The ADE7755 is supplied in a 24‑lead Shrink Small Outline Package (SSOP).