Cirrus-logic CS5466 Manuel d'utilisateur

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Copyright Cirrus Logic, Inc. 2011
(All Rights Reserved)
http://www.cirrus.com
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 Power and
Performs Energy-to-pulse Conversions
Meets Accuracy Spec for IEC, ANSI, & JIS.
High-pass Filter Option
Four Input Ranges for Current Channel
On-chip, 2.5 V Reference
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 (POR)
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 incorpo-
rating dual delta-sigma (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 low-frequency pulse outputs, E1
and E2, provide
pulses at a frequency which is proprtional to the active
power and can be used to drive a stepper motor or a me-
chanical counter. Energy direction output, NEG,
indicates when pulse outputs E1
and E2 represent neg-
ative active power. The high-frequency pulse output
FOUT is designed to assist in system calibration.
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
See page 16.
I
IIN+
IIN-
IGAIN0
IGAIN1
VIN+
VIN-
VREFOUT
VA+ RESET VD+
DGNDAGND
FOUT
E1
E2
CPUCLK
XOUT
XIN
FREQ0
FREQ1
FREQ2
PGA
x10
NEG
4th Order 
Modulator
2nd Order 
Modulator
HPF
Option
Config
Clock
Generator
Digital
Filter
Digital
Filter
2.5V On-Chip
Reference
VREFIN x1
HPF
Option
HPF
Energy-to-
Frequency
Conversion
APR ‘11
DS659F2
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Résumé du contenu

Page 1 - Description

Copyright  Cirrus Logic, Inc. 2011(All Rights Reserved)http://www.cirrus.comCS5466 Low-cost Power/Energy IC with Pulse OutputFeatures Single-chip Po

Page 2 - LIST OF TABLES

CS546610 DS659F24. THEORY OF OPERATIONThe CS5466 is a dual-channel analog-to-digital convert-er (ADC) followed by a computation engine that per-forms

Page 3 - 1. OVERVIEW

CS5466DS659F2 115. FUNCTIONAL DESCRIPTION 5.1 Analog InputsThe CS5466 is equipped with two fully differential inputchannels. The inputs VIN and IIN

Page 4 - 2. PIN DESCRIPTION

CS546612 DS659F2 5.3.3 Selecting Frequency of FOUT The pulse output FOUT is designed to assist with metercalibration. Using the FREQ[2:0] pins, FOUT c

Page 5 - ANALOG CHARACTERISTICS

CS5466DS659F2 135.3.5 E1 and E2 Frequency CalculationThe pulse output frequency of E1 and E2 is directly pro-portional to the active power calculated

Page 6 - VOLTAGE REFERENCE

CS546614 DS659F25.7 Basic Application CircuitFigure 4 shows the CS5466 configured to measurepower in a single-phase, 2-wire system while operatingin a

Page 7

CS5466DS659F2 156. PACKAGE DIMENSIONSNotes: 1. “D” and “E1” are reference datums and do not included mold flash or protrusions, but do include mold m

Page 8 - SWITCHING CHARACTERISTICS

CS546616 DS659F27. ORDERING INFORMATION 8. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION* MSL (Moisture Sensitivity Level) as specified by

Page 9 - ABSOLUTE MAXIMUM RATINGS

CS54662 DS659F2TABLE OF CONTENTS1. OVERVIEW ...

Page 10 - 4. THEORY OF OPERATION

CS5466DS659F2 31. OVERVIEWThe CS5466 is a CMOS monolithic power measurement device with an energy computation engine. The CS5466combines a programmabl

Page 11 - 5. FUNCTIONAL DESCRIPTION

CS54664 DS659F22. PIN DESCRIPTIONClock GeneratorCrystal OutCrystal In1, 24XOUT, XIN - A single stage amplifier inside the chip is connected to these p

Page 12

CS5466DS659F2 53. CHARACTERISTICS & SPECIFICATIONSRECOMMENDED OPERATING CONDITIONSANALOG CHARACTERISTICS • Min / Max characteristics and specifica

Page 13 - 5.5 Power-on Reset

CS54666 DS659F2ANALOG CHARACTERISTICS (Continued)Notes:3. All outputs unloaded. All inputs CMOS level.4. Definition for PSRR: VREFIN tied to VREFOUT,

Page 14 - 5.7 Basic Application Circuit

CS5466DS659F2 7DIGITAL CHARACTERISTICS (Note 7)• Min / Max characteristics and specifications are guaranteed over all operating conditions.• Typical

Page 15 - 24L SSOP PACKAGE DRAWING

CS54668 DS659F2SWITCHING CHARACTERISTICS • Min / Max characteristics and specifications are guaranteed over all operating conditions.• Typical charac

Page 16 - 9. REVISION HISTORY

CS5466DS659F2 9ABSOLUTE MAXIMUM RATINGS WARNING: Operation at or beyond these limits may result in permanent damage to the device.Normal operation is

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