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CS5462 Datasheet(PDF) 1 Page - Cirrus Logic

Part No. CS5462
Description  LOW COST POWER ENERGY IC WITH PULSE OUTPUT
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Maker  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
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Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
1
Copyright
Cirrus Logic, Inc. 2003
(All Rights Reserved)
http://www.cirrus.com
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 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 CS5462 has configuration pins which allow for direct
configuration of pulse output format, pulse output fre-
quency, 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 oper-
able level.
ORDERING INFORMATION
CS5462-IS
-40° to 85° C
24-pin SSOP
I
PGA
VA+
IIN+
IIN-
VIN+
VIN-
VREFIN
VREFOUT
High Pass
Filter
Voltage
Reference
x1
RESET
Digital
Filter
High Pass
Filter
x10
Energy to
Pulse Rate
Converter
4th Order
∆Σ
Modulator
2nd Order
∆Σ
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
CAL1
FREQ
CAL0
NEG/P2
P3
XIN
Program Select
Outputs
for
Configuration
AGND
OCT 03
DS547PP1




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