AMC1200-Q1_16 Datasheet, PDF (1/30 Pages) Texas Instruments – Fully-Differential Isolation Amplifier

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AMC1200-Q1
SBAS585A – SEPTEMBER 2012 – REVISED JANUARY 2016
AMC1200-Q1 Fully-Differential Isolation Amplifier
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Temperature Grade 2: –40°C to 105°C
– HBM ESD Classification Level H2
– CDM ESD Classification Level C3B
• ±250-mV Input Voltage Range Optimized for
Shunt Resistors
• Very Low Nonlinearity: 0.075% (max)
with 5-V High-Side Supply
• Low Offset Error: 1.5 mV (max)
• Low Noise: 3.1 mV_RMS (typical)
• Low High-Side Supply Current:
8 mA (max) at 5 V
• Input Bandwidth: 60 kHz (min)
• Fixed Gain: 8 (0.5% accuracy)
• High Common-Mode Rejection Ratio:
108 dB (typical)
• 3.3-V Operation on Low-Side
• Certified Galvanic Isolation:
– UL1577 and VDE V 0884-10 Approved
– Isolation Voltage: 4250 V_PEAK
– Working Voltage: 1200 V_PEAK
– Transient Immunity: 10 kV/µs (min)
• Typical 10-Year Lifespan at Rated Working
Voltage (see Application Report, SLLA197)
2 Applications
• Isolated Shunt-Resistor-Based Current or Voltage
Sensing in:
– Traction Inverters
– On-Board Chargers
– DC-DC Converters
– Battery Management Systems
3 Description
The AMC1200-Q1 is a precision isolation amplifier
with the output separated from the input circuitry by a
silicon dioxide (SiO₂) barrier that is highly resistant to
magnetic interference. This barrier is certified to
provide galvanic isolation of up to 4250 V_PEAK
according to UL1577 and VDE V 0884-10. 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 AMC1200-Q1 is optimized for direct
connection to shunt resistors or other low-voltage
level signal sources. The performance of the device
supports accurate current control, resulting in system-
level power saving and (especially in motor-control
applications) lower torque ripple. The common-mode
voltage of the output signal is automatically adjusted
to either the 3-V or 5-V low-side supply.
The AMC1200-Q1 is available in a wide-body, 8-pin
SOIC package (DWV) and a gullwing, 8-pin SOP
package (DUB).
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
AMC1200-Q1
SOP (8)
SOIC (8)
9.50 mm × 6.62 mm
5.85 mm × 7.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
VDD1
VDD2
VDD2 = 5 V
VINP
VOUTP
2.55 V
±2 V
0V
±250 mV
VINN
VDD2 = 3.3 V
VOUTN
1.29 V
±2 V
GND1
GND2
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. PRODUCTION DATA.