CS5484-INZR Cirrus Logic, Inc., CS5484-INZR Datasheet

CS5484-INZR

Manufacturer Part Number

CS5484-INZR

Description

IC 4-ch, power measurement

Manufacturer

Cirrus Logic, Inc.

Datasheet

1.CS5484-INZR.pdf (68 pages)

Specifications of CS5484-INZR

Pack_quantity

6000

Comm_code

85423990

Lead_time

Current page: 1 of 68
Download datasheet (803Kb)

Features

•

ORDERING INFORMATION

Cirrus Logic, Inc.

http://www.cirrus.com

Superior Analog Performance with Ultra-low Noise Level

Energy Measurement Accuracy of 0.1% over 4000:1

Current RMS Measurement Accuracy of 0.1% over 1000:1

4 Independent 24-bit, 4

4 Configurable Digital Outputs for Energy Pulses,

Supports Shunt Resistor, CT, and Rogowski Coil Current

On-chip Measurements/Calculations:

Overcurrent, Voltage Sag, and Voltage Swell Detection

Ultra-fast On-chip Digital Calibration

Internal Register Protection via Checksum and Write

UART/SPI™ Serial Interface

On-chip Temperature Sensor

On-chip Voltage Reference (25ppm/°C Typ.)

Single 3.3V Power Supply

Ultra-fine Phase Compensation

Low Power Consumption: <13mW

Power Supply Configurations

5mmx5mm 28-pin QFN Package

and High SNR

Dynamic Range

for Voltage and Current Measurements

Zero-crossing, or Energy Direction

Sensors

Protection

See

- Active, Reactive, and Apparent Power

- RMS Voltage and Current

- Power Factor and Line Frequency

- Instantaneous Voltage, Current, and Power

- GNDA = GNDD = 0V, VDDA = +3.3V

Page

MODE

VIN1+

VIN2+

VIN1-

IIN1+

VIN2-

IIN2+

IIN1-

IIN2-

67.

& Description

Four Channel Energy Measurement IC

Temperature

PGA

10x

Sensor

VDDA

-order, Delta-Sigma Modulators

GNDA

Modulator

Order 

System

Clock

XIN

Digital

Filter

Generator

RESET

XOUT

Clock

Description

The CS5484 is a high-accuracy, four-channel, energy

measurement analog front end.

The CS5484 incorporates independent 4

analog-to-digital converters for every channel, reference

circuitry, and the proven EXL signal processing core to provide

active, reactive, and apparent energy measurement. In

addition, RMS and power factor calculations are available.

Calculations are output through a configurable energy pulse,

or direct UART/SPI™ serial access to on-chip registers.

Instantaneous current, voltage, and power measurements are

also available over the serial port. Multiple serial options are

offered to allow customer flexibility. The SPI provides higher

speed, and the 2-wire UART minimizes the cost of isolation

where required.

Four configurable digital outputs provide energy pulses,

zero-crossing, energy direction, and interrupt functions.

Interrupts can be generated for a variety of conditions

including voltage sag or swell, overcurrent, and more. On-chip

The CS5484 is designed to interface to a variety of voltage and

current

transformers, and Rogowski coils.

On-chip functionality makes digital calibration simple and

ultra-fast, minimizing the time required at the end of the

customer production line. Performance across temperature is

ensured with an on-chip voltage reference with low drift. A

single 3.3V power supply is required, and power consumption

is low at <13mW. To minimize space requirements, the

CS5484 is offered in a low-cost, 5mm x5mm 28-pin QFN

package.

Option

CPUCLK

HPF

sensors

Calculation

GNDD

including

Configurable

CS5484

UART/SPI

Reference

Interface

Outputs

Voltage

Digital

Serial

VDDD

CS5484

shunt

resistors,

SSEL

RX / SDI

TX / SDO

SCLK

DO2

DO3

DO4

DO1

VREF+

VREF-

order Delta-Sigma

DS981F2

JUN’12

current

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