Preliminary Product Information

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CS5466

Low Cost Power/Energy IC with Pulse Output

Features

Single Chip; Power Measurement Solution

Energy Data Linearity: ±0.1% of Reading

over 1000:1 Dynamic Range

On-Chip functions: Measures Energy and

Performs Energy-to-Pulse Conversions

Meets Accuracy Spec for IEC 687/1036

High Pass Filter Option

Four Input Ranges for Current Channel

On-Chip 2.5 V Reference (25 ppm/°C typ)

Pulse Outputs for Stepper Motor or

Mechanical Counter

On-Chip Energy Direction Indicator

Ground Referenced Input Signals with Single

Supply

High Frequency Output for Calibration

On-Chip Power-on Reset

Power Supply Configurations:

VA+ = +5 V; AGND = 0 V; VD+ = +3.3 V to 5 V

Description

The CS5466 is a low cost power meter solution combin-

ing two

∆Σ Analog-to-Digital Converters (ADC)’s, an

energy-to-frequency converter, and energy pulse out-

puts on a single chip. It is designed to accurately

measure and calculate energy for single phase 2- or 3-

wire power metering applications with minimal external

components.

Low frequency energy outputs, E1 and E2, supply aver-

age real power and can be used to drive a stepper motor

or a mechanical counter; the high frequency energy out-

put FOUT can be used for calibration; and NEG indicates

negative power.

The CS5466 has configuration pins which allow for direct

configuration of pulse output frequency, current channel

input range, and high pass filter enable option.

The CS5466 also has a power-on reset function which

holds the part in reset until the supply reaches an oper-

able level.

ORDERING INFORMATION

CS5466-ISZ

-40° to 85° C

24-pin SSOP

Lead Free

I

IIN+

IIN-

IGAIN0

IGAIN1

VIN+

VIN-

VREFOUT

VA+

RESET

HPF

VD+

DGND

AGND

FOUT

E1

E2

CPUCLK

XOUT

XIN

FREQ0

FREQ1

FREQ2

PGA:

x10, x50, x100, x150

x10

NEG

+

-

+

-

4th Order

∆Σ

Modulator

2nd Order

∆Σ

Modulator

HPF

Option

Energy-to-

Frequency

Conversion

Negative

Power

Indication

Clock

Generator

Digital

Filter

Digital

Filter

2.5V On-Chip

Reference

VREFIN

x1

HPF

Option

OCT ‘04

DS659PP2