CS5461A Product Bulletin

24-pin SSOP
7. 4 m m
7.9 mm
IC dimensions
(pin-to-pin nominal)
CS5461A Features
Energy data linearity: +0.1% of reading
over 1000:1 dynamic range
On-chip Functions:
Instantaneous Voltage, Current
and Power, IRMS and VRMS, Average Real
and Apparent Power, Energy-to-pulse
Meets accuracy spec for IEC, ANSI, JIS
Low power consumption
Adjustable input range on
current channel
GND-referenced signals with
single supply
On-chip temperature sensor
On-chip 2.5 V reference
(typ 25 ppm/°C)
AC/DC system calibrations
Phase compensation
Simple 3-wire digital serial interface
Power supply monitor
Programmable energy-to-pulse
output function
Configurable pulse outputs for stepper
motor or mechanical counter
Power supply configurations:
VA+ = +5 V; AGND = 0 V;
VD+ = +3.3 V to +5 V
Package: 24-pin SSOP
Next-Generation IC is Ideal for Electronic
Power-Measurement Applications
Delivers Accurate Power-Usage Measurements
The CS5461A enables digital power-meter
The CS5461A is easy to design in as
manufacturers to provide highly accurate,
a pin-compatible upgrade to the popular
cost-effective solutions for measuring
Cirrus Logic CS5460A. It retains all the
power usage. This new IC is an integrated
functionality of its predecessor, while also
power-measurement device that combines
providing an on-chip temperature sensor
two Delta-Sigma A/D converters, high-
which can be used to lower the
speed power calculation functions, and a
temperature coefficient, allowing for
serial interface on a single chip. Additional
higher accuracy over temperature. For
features include AC and DC calibration and
communication with a microcontroller,
phase compensation. Designed for
the IC features a bi-directional serial
residential single-phase or industrial three-
interface, which is initialized and fully
phase power-meter applications, the IC
functional upon reset. The CS5461A can
accurately measures instantaneous current
interface to a low-cost shunt resistor or
and voltage while calculating instantaneous
transformer for current measurement and
power, real power, apparent power, IRMS
to a resistive divider or potential
and VRMS.
transformer for voltage measurement.
The CS5461A delivers accurate power
usage measurements and is ideal for
electronic power-meter applications.
C i r r u s L o g i c , I n c . · 2 9 0 1 V i a F o r t u n a · A u s t i n T X 7 8 74 6 U S A · T 5 1 2 - 8 5 1 - 4 0 0 0 · T 8 0 0 - 8 8 8 - 5 0 1 6 · F 5 1 2 - 8 5 1 - 4 9 7 7
Product Bulletin 0152-0505-PB-LP © 2005 Cirrus Logic, Inc. All rights reserved. Product information is subject to change without notice. Cirrus Logic is a trademark of Cirrus Logic, Inc.
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