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What is 5460A?

This electronic component, produced by the manufacturer "Cirrus Logic", performs the same function as " CS5460A".


5460A Datasheet PDF - Cirrus Logic

Part Number 5460A
Description CS5460A
Manufacturers Cirrus Logic 
Logo Cirrus Logic Logo 


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CS5460A
Single Phase Bi-Directional Power/Energy IC
Features
Description
Energy Data Linearity: ±0.1% of Reading
over 1000:1 Dynamic Range.
On-Chip Functions: (Real) Energy, I V,
IRMS and VRMS, Energy-to-Pulse
Conversion
www.DataSheet4US.cmomart “Auto-Boot” Mode from Serial
EEPROM Enables Use without MCU.
AC or DC System Calibration
Mechanical Counter/Stepper Motor Driver
Meets Accuracy Spec for IEC 687/1036, JIS
Typical Power Consumption <12 mW
Interface Optimized for Shunt Sensor
V vs. I Phase Compensation
Ground-Referenced Signals with Single
Supply
On-chip 2.5 V Reference (MAX 60 ppm/°C
drift)
Simple Three-Wire Digital Serial Interface
Watch Dog Timer
Power Supply Monitor
Power Supply Configurations
VA+ = +5 V; VA- = 0 V; VD+ = +3.3 V to +5 V
The CS5460A is a highly integrated power mea-
surement solution which combines two ∆Σ
Analog-to-Digital Converters (ADCs), high speed
power calculation functions, and a serial interface
on a single chip. It is designed to accurately mea-
sure and calculate: Real (True) Energy,
Instantaneous Power, IRMS, and VRMS for single
phase 2- or 3-wire power metering applications.
The CS5460A interfaces to a low-cost shunt resis-
tor or transformer to measure current, and to a
resistive divider or potential transformer to mea-
sure voltage. The CS5460A features a
bi-directional serial interface for communication
with a micro-controller and a pulse output engine
for which the average pulse frequency is propor-
tional to the real power. The CS5460A has on-chip
functionality to facilitate AC or DC system-level
calibration.
The “Auto-Boot” feature allows the CS5460A to
function ‘stand-alone’ and to initialize itself on sys-
tem power-up. In Auto-Boot Mode, the CS5460A
reads the calibration data and start-up instructions
from an external EEPROM. In this mode, the
CS5460A can operate without a microcontroller, in
order to lower the total bill-of-materials cost.
VA+
IIN+ PGA
IIN- x10,x50
4th Order
∆Σ
Modulator
VIN+
x10
VIN-
VREFIN
x1
2nd Order
∆Σ
Modulator
VREFOUT
Voltage
Reference
Power
Monitor
RESET
VD+
Digital
Filter
Digital
Filter
System
Clock
/K
High Pass
Filter
Power
Calculation
Engine
(Energy
I*V
IRMS,VRMS )
High Pass
Filter
Clock
Generator
Watch Dog
Timer
Control /
Serial
Interface
Energy-to-
Pulse
Converter
Calibration
SRAM
MODE
CS
SDI
SDO
SCLK
INT
EDIR
EOUT
Cirrus Logic, Inc.
http://www.cirrus.com
VA- PFMON
XIN XOUT CPUCLK
DGND
©Copyright Cirrus Logic, Inc. 2004
(All Rights Reserved)
SEP ‘04
DS487F2
1

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5460A equivalent
CS5460A
1. CHARACTERISTICS AND SPECIFICATIONS
ANALOG CHARACTERISTICS
(TA = -40 °C to +85 °C; VA+ = VD+ = +5 V ±10%; VREFIN = +2.5 V; VA- = AGND = 0 V; MCLK = 4.096 MHz,
K = 1; N = 4000 ==> OWR = 4000 Sps.)(See Notes 1, 2, 3, 4, and 5.)
Parameter
Symbol
Accuracy (Both Channels)
Common Mode Rejection
(DC, 50, 60 Hz) CMRR
Offset Drift (Without the High Pass Filter)
Analog Inputs (Current Channel)
Maximum Differential Input Voltage Range
www.DataSheet{4(UV.IcINo+m) - (VIIN-)}
(Gain = 10)
(Gain = 50)
IIN
Total Harmonic Distortion
THDI
Common Mode + Signal on IIN+ or IIN- (Gain = 10 or 50)
Crosstalk with Voltage Channel at Full Scale (50, 60 Hz)
Input Capacitance
(Gain = 10)
(Gain = 50)
Cin
Effective Input Impedance
(Note 6)
(Gain = 10)
(Gain = 50)
ZinI
ZinI
Noise (Referred to Input)
(Gain = 10)
(Gain = 50)
Accuracy (Current Channel)
Bipolar Offset Error
(Note 1)
Full-Scale Error
(Note 1)
Analog Inputs (Voltage Channel)
Maximum Differential Input Voltage Range {(VVIN+) - (VVIN-)}
Total Harmonic Distortion
Common Mode + Signal on VIN+ or VIN-
Crosstalk with Current Channel at Full Scale (50, 60 Hz)
Input Capacitance
Effective Input Impedance
(Note 6)
Noise (Referred to Input)
VOSI
FSEI
VIN
THDV
CinV
ZinV
Accuracy (Voltage Channel)
Bipolar Offset Error
Full-Scale Error
(Note 1) VOSV
(Note 1) FSEV
Min
80
-
-
-
80
-0.25
-
-
-
-
-
-
-
-
-
-
62
VA-
-
-
-
-
-
-
Typ
-
5
-
-
-
-
-
25
25
30
30
-
-
±0.001
±0.001
-
-
-
-
0.2
5
-
±0.01
±0.01
Max
-
-
500
100
-
VA+
-115
-
-
-
-
20
4
-
-
500
-
VA+
-70
-
-
250
-
-
Unit
dB
nV/°C
mVP-P
mVP-P
dB
V
dB
pF
pF
k
k
µVrms
µVrms
%F.S.
%F.S.
mVP-P
dB
V
dB
pF
M
µVrms
%F.S.
%F.S.
Notes: 1. Bipolar Offset Errors and Full-Scale Gain Errors for the current and voltage channels refer to the respective Irms
Register and Vrms Register output, when the device is operating in ‘continuous computation cycles’ data acquisition
mode, after offset/gain system calibration sequences have been executed. These specs do not apply to the error
of the Instantaneous Current/Voltage Register output.
2. Specifications guaranteed by design, characterization, and/or test.
3. Analog signals are relative to VA- and digital signals to DGND unless otherwise noted.
4. In requiring VA+ = VD+ =5 V ±10%, note that it is allowable for VA+, VD+ to differ by as much as ±200 mV, as long
as VA+ > VD+.
5. Note that “Sps” is an abbreviation for units of “samples per second”.
6. Effective Input Impedance (Zin) is determined by clock frequency (DCLK) and Input Capacitance (IC).
Zin = 1/(IC*DCLK/4). Note that DCLK = MCLK / K.
5


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