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CS5462

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

 On-chip System Calibration Option

 High-pass Filter Option for Both I and V

 2 Available Current Input Ranges

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

 Pulse Outputs for Stepper Motor or Mechanical

Counter

 On-chip Energy Direction Indicator

 Ground Reference 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 CS5462 is a low-cost power meter solution

combining two analog-to-digital convertersADCs),

an energy-to-frequency converter, and energy pulse

outputs 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

average real power and can be used to drive a stepper

motor or a mechanical counter; the high-frequency

energy output FOUT

can be used for calibration; and

NEG

indicates negative power.

The CS5462 has configuration pins which allow for direct

configuration of pulse output format, pulse output

frequency, current channel input range, high-pass filter

option, and on-chip calibration.

The CS5462 also has a power-on reset function which

holds the part in reset until the supply reaches an

operable level.

ORDERING INFORMATION:

See page 16.

PGA

VA+

IIN+

IIN-

VIN+

VIN-

VREFIN

VREFOUT

High Pass

Filter

Voltage

Reference

RESET

Digital

Filter

High Pass

Filter

x10

Energy to

Pulse Rate

Converter

4th Order 

Modulator

2nd Order 

Modulator

Digital

Filter

x10,x50

DGND / P1

Energy

Direction

Calibration

VD+ / P7

Configuration Inputs: On-Chip Calibration,

Pulse Output Mode / Output Frequency,

HPF Option, and

Current Channel Input Range

Clock

Generator

XOUT

CPUCLK

E2 / P4

E1 / P5

FOUT / P6

IGAIN CAL1FREQ CAL0

NEG/P2

XIN

Program Select

Outputs

for

Configuration

AGND

APR 11

DS547F1

1 2 3 4 5 6 ... 15 16

Resumo do Conteúdo

Página 1 - Description

Página 2 - LIST OF FIGURES

CS546210 DS547F14. FUNCTIONAL DESCRIPTION 4.1 Programmable Gain Amplifier (PGA)The CS5462 is equipped with a PGA on the currentchannel. While the volt

Página 3 - 2. PIN DESCRIPTION

CS5462DS547F1 114.2.2 Mechanical Counter FormatIn mechanical counter mode, the CS5462 produc-es pulses on E1 and E2 which can be used to drivea bi-dir

Página 4 - 4 DS547F1

CS546212 DS547F1which time the CS5462 will configure itself and re-sume normal operation.4.6 Oscillator CharacteristicsXIN and XOUT are the input and

Página 5 - ANALOG CHARACTERISTICS

CS5462DS547F1 13means that E1 and E2 should have an averagepulse output frequency of 2 Hz * 72% = 1.44 Hzand FOUT should have an average pulse outputf

Página 6 - VREF 25 60 ppm/°C

CS546214 DS547F14.8 Basic Application Circuit ConfigurationsFigure 9 shows the CS5462 configured to measurepower in a single-phase 2-wire system while

Página 7 - SWITCHING CHARACTERISTICS

CS5462DS547F1 155. PACKAGE DIMENSIONSNotes: 1. “D” and “E1” are reference datums and do not included mold flash or protrusions, but do include mold m

Página 8 - ABSOLUTE MAXIMUM RATINGS

CS546216 DS547F16. ORDERING INFORMATION 7. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION* MSL (Moisture Sensitivity Level) as specified by

Página 9 - 3.1.2 Gain Calibration

CS54622 DS547F1TABLE OF CONTENTS1. GENERAL DESCRIPTION ...

Página 10 - 4.2.1 Stepper Motor Format

CS5462DS547F1 31. GENERAL DESCRIPTIONThe CS5462 is a CMOS monolithic power mea-surement device with an energy computation en-gine. The CS5462 combines

Página 11 - DS547F1 11

CS54624 DS547F1Notes: 1 Pin number 4 is described as Digital Ground (DGND) and also P1 2 Pin number 3 is described as Positive Power Supply (VD+) and

Página 12 - 4.7 User Defined Settings

CS5462DS547F1 53. CHARACTERISTICS/SPECIFICATIONS• Min / Max characteristics and specifications areguaranteed over all Operating Conditions.• Typical c

Página 13 - Figure 7. Power-on Reset

CS54626 DS547F1ANALOG CHARACTERISTICS (Continued)Notes: 3. All outputs unloaded. All inputs CMOS level.4.Definition for PSRR: VREFIN tied to VREFOUT,

Página 14 - Configurations

CS5462DS547F1 7DIGITAL CHARACTERISTICS (Note 6)Notes: 6. All measurements performed under static conditions.SWITCHING CHARACTERISTICS 7. If external

Página 15 - 24L SSOP PACKAGE DRAWING

CS54628 DS547F1ABSOLUTE MAXIMUM RATINGS WARNING: Operation at or beyond these limits may result in permanent damage to the device.Normal operation is

Página 16 - 8. REVISIONS

CS5462DS547F1 93.1 Theory of Operation A computational flow diagram for the two datapaths is shown in Figure 1. The analog waveformsat the voltage/cur

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Cirrus-logic CS5462 Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Hardware Cirrus-logic CS5462. Cirrus Logic CS5462 User Manual Manual do Utilizador

Resumo do Conteúdo

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