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AMC1203 Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza AMC1203
Descripción Electrónicos  20MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

AMC1203 Datasheet(HTML) 1 Page - Texas Instruments

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AVDD
DGND
AGND
DVDD
DS
Modulator
DATA
VINP
VINN
2.5V
Ref
CLKIN
AMC1204
www.ti.com
SBAS512B
– APRIL 2011 – REVISED AUGUST 2011
20MHz, Second-Order, Isolated Delta-Sigma Modulator
for Current-Shunt Measurement
Check for Samples: AMC1204
1
FEATURES
DESCRIPTION
The AMC1204 is a 1-bit digital output, isolated
2
±250mV Input Voltage Range Optimized for
delta-sigma (
ΔΣ) modulator that can be clocked at up
Shunt Resistors
to 20MHz. The digital isolation of the modulator
Certified Digital Isolation:
output is provided by a silicon dioxide (SiO2) barrier
– CSA, IEC60747-5-2, and UL1577 Approved
that is highly resistant to magnetic interference. This
barrier has been certified to provide basic galvanic
– Isolation Voltage: 4000VPEAK
isolation of up to 4000VPEAK according to UL1577,
– Working Voltage: 1200VPEAK
IEC60747-5-2, and CSA standards or specifications.
– Transient Immunity: 15kV/µs
The AMC1204 provides a single-chip solution for
Long Isolation Barrier Lifetime (see
measuring the small signal of a shunt resistor across
Application Report SLLA197)
an isolated barrier. These types of resistors are
typically used to sense currents in motor control
High Electromagnetic Field Immunity
inverters, green energy generation systems, and
(see Application Note SLLA181A)
other
industrial
applications.
The
AMC1204
Outstanding AC Performance:
differential inputs easily connect to the shunt resistor
– SNR: 84dB (min)
or
other
low-level
signal
sources.
An
internal
reference
eliminates
the
need
for
external
– THD: –80dB (max)
components. When used with an appropriate external
Excellent DC Precision:
digital filter, an effective number of bits (ENOB) of 14
– INL: ±8LSB (max)
is achieved at a data rate of 78kSPS.
– Gain Error: ±2% (max)
A 5V analog supply (AVDD) is used by the modulator
External Clock Input for Easier
while the isolated digital interface operates from a 3V,
Synchronization
3.3V, or 5V supply (DVDD). The AMC1204 is
available in an SO-16 (DW) package and is specified
Fully Specified Over the Extended Industrial
from
–40°C to +105°C.
Temperature Range
APPLICATIONS
Shunt Resistor Based Current Sensing in:
– Motor Control
– Green Energy
– Inverter Applications
– Uninterruptible Power Supplies
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright
© 2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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