1 Features
1• ±250-mV input voltage range optimized for shunt
resistors
• Very low nonlinearity: 0.075% max at 5 V
• Low offset error: 1.5 mV max
• Low noise: 3.1 mVRMS typ
• 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
• Low-side operation: 3.3 V
• Safety-related certifications:
– 4250-VPK basic isolation per
DIN VDE V 0884-11: 2017-01
– 3005-VRMS isolation for 1 minute per UL1577
– CAN/CSA no. 5A-component acceptance
service notice and DIN EN 61010-1 standard
– Working voltage: 1200 VPEAK
– Transient immunity: 2.5 kV/μs min
• Fully specified over the extended industrial
temperature range

2 Applications
Shunt resistor based current sensing in:
• Electricity meters
• String inverters
• Power measurement applications

3 Description
The AMC1100 is a precision isolation amplifier with
an 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 VPEAK,
according to DIN VDE V 0884-11: 2017-01 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 AMC1100 input is optimized for direct connection
to shunt resistors or other low voltage level signal
sources. The excellent performance of the device
enables accurate current and voltage measurement
in energy-metering applications. The output signal
common-mode voltage is automatically adjusted to
either the 3-V or 5-V low-side supply.
The AMC1100 is fully specified over the extended
industrial temperature range of –40°C to +105°C and
is available in the SMD-type, wide-body SOIC-8
DWV) and gullwing-8 (DUB) packages.