AMC1301 Datasheet, PDF (1/8 Pages) Texas Instruments – Fully-Differential Isolation Amplifier

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AMC1301 250-kHz, Fully-Differential Isolation Amplifier
AMC1301
SBAS667 – APRIL 2016
1 Features
•1 ±250-mV Input Voltage Range Optimized for
Current Measurement Using Shunt Resistors
• Low Offset Error and Drift:
±150 µV (Max) at 25°C, ±5 µV/°C (Max)
• Fixed Gain: 8.2
• Very Low Gain Error and Drift:
0.5% (Max) at 25°C, ±50 ppm/°C (Max)
• Very Low Nonlinearity and Drift:
0.075% (Max), 2.4 ppm/°C
• 3.3-V Operation on High-Side and Low-Side
• Fully Specified Over the Extended Industrial
Temperature Range
• Surge Immunity: Up to 10 kV
• Safety and Regulatory Approvals:
– 7000-V_PK Reinforced Isolation per
DIN V VDE V 0884-10
– 5000-V_RMS Isolation for 1 Minute per UL1577
– CSA Component Acceptance Notice 5A,
IEC 60065 and IEC 60950-1 End Equipment
Standards
2 Applications
• Shunt-Resistor-Based Current Sensing In:
– Motor Controls
– Green Energy
– Frequency Inverters
– Uninterruptible Power Supplies
• Isolated Voltage Sensing In:
– Frequency Inverters
– Power Supplies
3 Description
The AMC1301 is a precision isolation amplifier with
an output separated from the input circuitry by an
isolation barrier that is highly resistant to magnetic
interference. This barrier is certified to provide
reinforced galvanic isolation of up to 7 kV_PEAK
according to VDE-V 0884-10 and UL1577. Used in
conjunction with isolated power supplies, this device
prevents noise currents on a high common-mode
voltage line from entering the local ground and
interfering with or damaging sensitive circuitry.
The input of the AMC1301 is optimized for direct
connection to shunt resistors or other low voltage-
level signal sources. The excellent performance of
the device supports accurate current control resulting
in system-level power saving and, especially in motor
control applications, lower torque ripple.
The AMC1301 is fully specified over the extended
industrial temperature range of –40°C to +125°C and
is available in the SOIC-8 (DWV) package.
Device Information ⁽¹⁾
DEVICE NAME
PACKAGE
BODY SIZE
AMC1301
SOIC (8)
5.85 mm × 7.50 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
Floating
Power Supply
HV+
Gate
Driver
5.0 V
AMC1301
VDD1
VDD2
3.3 V or 5.0 V
To Load
RSHUNT
GND1
GND2
VINP
VINN
VOUTP
VOUTN
ADS7263
12-Bit ADC
Gate
Driver
HV-
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCT PREVIEW Information. Product in design phase of
development. Subject to change or discontinuance without notice.