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AMC1350 ACTIVE

±5-V-input precision reinforced isolated amplifier for voltage sensing

AMC1350 Precision, ±5-V Input, Reinforced Isolated Amplifier datasheet (Rev. A) (pdf, 2.19 MB)

Parameters

Gain error (+/-)(Max)(%)	0.2
Operating temperature range(C)	-40 to 125
Rating	Catalog
Small signal bandwidth(Typ)(kHz)	275
Gain non-linearity (+/-)(Max)(%)	0.01
Gain error drift (+/-)(Typ)(ppm/°C)	10
Input offset drift (+/-)(Typ)(uV/C)	3
Input offset (+/-)(Max)(mV)	1.5
CMTI(Min)(kV/µs)	100
Isolation transient overvoltage VIOTM (peak)(V)	7000
Isolation working voltage VIOWM (rms)(V)	1500
Input range(Vp-p)	+/-5

Features & description

Linear input voltage range: ±5 V
High input impedance: 1.25 MΩ (typ)
Fixed gain: 0.4 V/V
Low DC errors:
- Offset error ±1.5 mV (max)
- Offset drift: ±15 µV/°C (max)
- Gain error: ±0.2% (max)
- 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-V_PK reinforced isolation per DIN VDE V 0884-11: 2017-01
- 5000-V_RMS isolation for 1 minute per UL1577
Fully specified over the extended industrial temperature range: –40°C to +125°C

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 kV_RMS according to VDE V 0884-11 and UL1577, and supports a working voltage of up to 1.5 kV_RMS.

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.

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.