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
VA+
RESET
High Pass
Filter
VD+ / P7
XIN
Clock
Generator
XOUT
CPUCLK
FOUT / P6
E1 / P5
E2 / P4
P3
NEG/P2
IIN+
IIN-
PGA
x10,x50
4th Order
∆Σ
Modulator
Digital
Filter
Energy to
Pulse Rate
Converter
Energy
Direction
VIN+
VIN-
x10
2nd Order
∆Σ
Modulator
Digital
Filter
Calibration
High Pass
Filter
VREFIN
x1
VREFOUT
Voltage
Reference
Configuration Inputs: On-Chip Calibration, Program Select
Outputs
Pulse Output Mode / Output Frequency,
for
HPF Option, and
Configuration
Current Channel Input Range
AGND
IGAIN
FREQ
CAL1
CAL0
DGND / P1
Preliminary Product Information
http://www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright
Cirrus Logic, Inc. 2003
(All Rights Reserved)
OCT 03
DS547PP1
1
CIRRUS [ CIRRUS LOGIC ]
