Datasheet

0V 250mV
2.55V
2V
1.29V
2V
5V
3.3V
GND1 GND2
VDD1 VDD2
VOUTP
VOUTN
VINP
VINN
AMC1200
AMC1200B
www.ti.com SBAS542C –APRIL 2011–REVISED SEPTEMBER 2013
Fully-Differential Isolation Amplifier
Check for Samples: AMC1200, AMC1200B
1
FEATURES
DESCRIPTION
The AMC1200 and AMC1200B are precision isolation
2
• ±250-mV Input Voltage Range Optimized for
amplifiers with an output separated from the input
Shunt Resistors
circuitry by a silicon dioxide (SiO
2
) barrier that is
• Very Low Nonlinearity: 0.075% max at 5 V
highly resistant to magnetic interference. This barrier
• Low Offset Error: 1.5 mV max
has been certified to provide galvanic isolation of up
to 4250 V
PEAK
(AMC1200B) or 4000 V
PEAK
• Low Noise: 3.1 mV
RMS
typ
(AMC1200) according to UL1577 and IEC60747-5-2.
• Low High-Side Supply Current:
Used in conjunction with isolated power supplies,
8 mA max at 5 V
these devices prevent noise currents on a high
• Input Bandwidth: 60 kHz min
common-mode voltage line from entering the local
ground and interfering with or damaging sensitive
• Fixed Gain: 8 (0.5% accuracy)
circuitry.
• High Common-Mode Rejection Ratio: 108 dB
The input of the AMC1200 or AMC1200B is optimized
• 3.3-V Operation on Low-Side
for direct connection to shunt resistors or other low
• Certified Galvanic Isolation:
voltage level signal sources. The excellent
– UL1577 and IEC60747-5-2 Approved
performance of the device supports accurate current
control resulting in system-level power saving and,
– Isolation Voltage: 4250 V
PEAK
(AMC1200B)
especially in motor-control applications, lower torque
– Working Voltage: 1200 V
PEAK
ripple. The common-mode voltage of the output
– Transient Immunity: 10 kV/µs min
signal is automatically adjusted to either the 3-V or
5-V low-side supply.
• Typical 10-Year Lifespan at Rated Working
Voltage (see Application Report SLLA197)
The AMC1200 and AMC1200B are fully specified
over the extended industrial temperature range of
• Fully Specified Over the Extended Industrial
–40°C to +105°C and are available in a wide-body
Temperature Range
SOIC-8 package (DWV) and a gullwing-8 package
(DUB).
APPLICATIONS
• Shunt Resistor Based Current Sensing in:
– Motor Control
– Green Energy
– Frequency Inverters
– Uninterruptible Power Supplies
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PRODUCTION DATA information is current as of publication date.
Copyright © 2011–2013, 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.