AMC1350
SBASAA6A – AUGUST 2021 – REVISED DECEMBER 2021
AMC1350 Precision, ±5-V Input, Reinforced Isolated Amplifier
1 Features
3 Description
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Linear input voltage range: ±5 V
High input impedance: 1.25 MΩ (typ)
Fixed gain: 0.4 V/V
The AMC1350 is a precision, isolated 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 5 kVRMS
according to VDE V 0884-11 and UL1577, and
Low DC errors:
– Offset error ±1.5 mV (max)
– Offset drift: ±15 μV/°C (max)
– Gain error: ±0.2% (max)
supports a working voltage of up to 1.5 kVRMS
.
– Gain drift: ±35 ppm/°C (max)
– Nonlinearity ±0.02% (max)
Operation on high-side and low-side: 3.3 V or 5 V
High CMTI: 100 kV/μs (min)
Fail-safe output
Safety-related certifications:
– 7070-VPK reinforced isolation per DIN VDE V
0884-11: 2017-01
– 5000-VRMS isolation for 1 minute per UL1577
Fully specified over the extended industrial
temperature range: –40°C to +125°C
The isolation barrier separates parts of the system
that operate on different common-mode voltage levels
and protects the low-voltage side from potentially
harmful voltages and damage.
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The high-impedance input of the AMC1350 is
optimized for connection to high-impedance resistive
dividers or other voltage signal sources with high
output resistance. The excellent accuracy and low
temperature drift supports accurate AC and DC
voltage sensing in DC/DC converters, frequency
inverters, AC motor, and servo-drive applications over
the extended industrial temperature range from –40°C
to +125°C.
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2 Applications
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Isolated AC voltage sensing in:
– Motor drives
Device Information(1)
– Frequency inverters
– Protection relays
– Power supplies
PART NUMBER
PACKAGE
BODY SIZE (NOM)
AMC1350
SOIC (8)
5.85 mm × 7.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
High-side supply
(3.3 V or 5 V)
Low-side supply
(3.3 V or 5 V)
VAC
AMC1350
VDD1
INP
VDD2
OUTP
+5.0 V
0 V
VCMout
±2 V
ADC
–5.0 V
INN
OUTN
GND2
GND1
Typical Application
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.