The CS5466 is a low-cost power meter solution incorporating dual delta-sigma (∆Σ) analog-to-digital converters (ADCs), an energy-to-frequency converter, and energy pulse outputs on a single chip. The CS5466 is designed to accurately measure and calculate energy for single phase, 2- or 3-wire power metering applications with minimal external components.
The CS5466 is a CMOS monolithic power measurement device that integrates dual delta‑sigma ADCs, a programmable gain amplifier, and an energy‑to‑frequency conversion engine on a single chip. It measures active power and provides pulse‑output signals (E1, E2, FOUT) for driving stepper motors, mechanical counters, or calibration systems.
The document includes an overview of the device, pin description, full electrical characteristics, theory of operation, functional description, package dimensions, ordering information, environmental data, and revision history. It also lists recommended operating conditions, accuracy specifications, and safety notices for critical applications.
| Current Channel Input Range (Gain = 10) | -250 mV to +250 mV |
|---|---|
| Voltage Reference Output Voltage | 42.5 V |
| Power Supply Current (VD+ = 5 V) | 1.3 mA |
| Power Consumption (5 V supply) | 25 mW |
| Operating Temperature Range | -40 °C to +85 °C |
| Package Type | 24‑pin SSOP |
The CS5466 has three pulse‑output pins: E1, E2, and FOUT. E1 and E2 can drive a stepper motor or mechanical counter, while FOUT provides a high‑frequency pulse for calibration.
The device uses a positive digital supply VD+ of 3.135 V to 5.25 V and a positive analog supply VAt of 4.75 V to 5.25 V, typically supplied with a single +5 V rail.
The CS5466 is specified for operation from –40 °C to +85 °C.