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Cirrus Logic

CS5462 Datasheet Preview

CS5462 Datasheet

Low-cost Power/Energy

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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
I
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.
IIN+
IIN-
VIN+
VIN-
VREFIN
VREFOUT
VA+
RESET
VD+ / P7
PGA
x10,x50
4th Order 
Modulator
x10
2nd Order 
Modulator
x1
Digital
Filter
Digital
Filter
High Pass
Filter
Energy to
Pulse Rate
Converter
Energy
Direction
Calibration
High Pass
Filter
Clock
Generator
XIN
XOUT
CPUCLK
FOUT / P6
E1 / P5
E2 / P4
P3
NEG/P2
Voltage
Reference
Configuration Inputs: On-Chip Calibration,
Pulse Output Mode / Output Frequency,
HPF Option, and
Current Channel Input Range
Program Select
Outputs
for
Configuration
AGND
IGAIN FREQ CAL1 CAL0
DGND / P1
http://www.cirrus.com
Copyright Cirrus Logic, Inc. 2011
(All Rights Reserved)
APR 11
DS547F1




Cirrus Logic

CS5462 Datasheet Preview

CS5462 Datasheet

Low-cost Power/Energy

No Preview Available !

CS5462
TABLE OF CONTENTS
1. GENERAL DESCRIPTION ....................................................................................................... 3
2. PIN DESCRIPTION ................................................................................................................... 3
3. CHARACTERISTICS/SPECIFICATIONS ................................................................................. 5
ANALOG CHARACTERISTICS ................................................................................................ 5
DIGITAL CHARACTERISTICS ................................................................................................. 7
SWITCHING CHARACTERISTICS .......................................................................................... 7
ABSOLUTE MAXIMUM RATINGS ........................................................................................... 8
3.1 Theory of Operation ........................................................................................................... 9
3.1.1 Digital Filters ......................................................................................................... 9
3.1.2 Gain Calibration .................................................................................................... 9
3.1.3 Energy-to-Frequency Conversion ......................................................................... 9
4. FUNCTIONAL DESCRIPTION ............................................................................................... 10
4.1 Programmable Gain Amplifier (PGA) ............................................................................... 10
4.2 Pulse-Rate Output ........................................................................................................... 10
4.2.1 Stepper Motor Format. ........................................................................................ 10
4.2.2 Mechanical Counter Format ................................................................................ 11
4.3 Energy Direction Indicator ................................................................................................ 11
4.4 Internal Calibration Option ............................................................................................... 11
4.5 Power-on Reset ............................................................................................................... 11
4.6 Oscillator Characteristics ................................................................................................. 12
4.7 User Defined Settings ...................................................................................................... 12
4.8 Basic Application Circuit Configurations .......................................................................... 14
5. PACKAGE DIMENSIONS ....................................................................................................... 15
6. ORDERING INFORMATION .................................................................................................. 16
7. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION ............................ 16
8. REVISIONS ............................................................................................................................. 16
LIST OF FIGURES
Figure 1. Data Flow ......................................................................................................................... 9
Figure 2. PGA Settings.................................................................................................................. 10
Figure 3. Pulse Output Settings .................................................................................................... 10
Figure 6. Calibration Options......................................................................................................... 11
Figure 7. Power-on Reset ............................................................................................................. 12
Figure 8. Oscillator Connection ..................................................................................................... 12
Figure 9. Calibration, Frequency Select, and PGA Select ............................................................ 12
Figure 7. Power-on Reset ............................................................................................................. 13
Figure 8. Typical Connection Diagram .......................................................................................... 14
2 DS547F1


Part Number CS5462
Description Low-cost Power/Energy
Maker Cirrus Logic
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CS5462 Datasheet PDF






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