CS5466 Datasheet, PDF (1/16 Pages) Cirrus Logic – Low-cost Power/Energy IC with Pulse Output

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 Energy and
Performs Energy-to-Pulse Conversions
Meets Accuracy Spec for IEC 687/1036
High Pass Filter Option
Four Input Ranges for Current Channel
On-Chip 2.5 V Reference (25 ppm/°C typ)
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
Power Supply Configurations:
VA+ = +5 V; AGND = 0 V; VD+ = +3.3 V to 5 V
I
Description
The CS5466 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 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
CS5466-ISZ -40° to 85° C 24-pin SSOP Lead Free
VA+
PGA:
x10, x50, x100, x150
IIN+
+
IIN-
-
4th Order ∆Σ
Modulator
IGAIN0
IGAIN1
VREFIN
x1
VIN+
VIN-
+
-
x10
2nd Order
∆Σ
Modulator
VREFOUT
2.5V On-Chip
Reference
RESET
HPF
VD+
Digital
Filter
Digital
Filter
HPF
Option
Energy-to-
Frequency
Conversion
Negative
Power
Indication
HPF
Option
Clock
Generator
FOUT
E1
E2
NEG
FREQ0
FREQ1
FREQ2
CPUCLK
XOUT
XIN
AGND
Preliminary Product Information
DGND
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
http://www.cirrus.com
© Copyright Cirrus Logic, Inc. 2004
(All Rights Reserved)
OCT ‘04
DS659PP2
1