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AMC3330-Q1 ACTIVE

Automotive ±1-V input, precision reinforced isolated amplifier with integrated DC/DC converter

AMC3330-Q1 Precision, ±1-V Input, Reinforced Isolated Amplifier With Integrated DC/DC Converter datasheet (Rev. A) (pdf, 1.89 MB)

Parameters

Gain error (+/-)(Max)(%)	0.4
Operating temperature range(C)	-40 to 125
Rating	Automotive
Small signal bandwidth(Typ)(kHz)	310
Gain non-linearity (+/-)(Max)(%)	0.075
Gain error drift (+/-)(Typ)(ppm/°C)	60
Input offset drift (+/-)(Typ)(uV/C)	5
Input offset (+/-)(Max)(mV)	0.2
CMTI(Min)(kV/µs)	75
Isolation transient overvoltage VIOTM (peak)(V)	6000
Isolation working voltage VIOWM (rms)(V)	1200
Input range(Vp-p)	±1

Features & description

AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to 125°C, T_A
3.3-V or 5-V single supply operation with integrated DC/DC converter
±1-V input voltage range optimized for voltage measurements with high input impedance
Fixed gain: 2.0
Low DC errors:
- Gain error: ±0.2% (max)
- Gain drift: ±45 ppm/°C (max)
- Offset error: ±0.3 mV (max)
- Offset drift: ±4 µV/°C (max)
- Nonlinearity: ±0.02% (max)
High CMTI: 85 kV/µs (min)
System-level diagnostic features
Safety-related certifications:
- 6000-V_PK reinforced isolation per DIN VDE V 0884-11 (VDE V 0884-11): 2017-01
- 4250-V_RMS isolation for 1 minute per UL1577
Meets CISPR-11 and CISPR-25 EMI standards

The AMC3330-Q1 is a precision, isolated amplifier with a fully integrated, isolated DC/DC converter that allows single-supply operation from the low-side of the device. The reinforced capacitive isolation barrier is certified according to VDE V 0884-11 and UL1577 and separates sections of the system that operate on different common-mode voltage levels and protects low-voltage domains from damage.

The input of the AMC3330-Q1 is optimized for direct connection to high-impedance, voltage-signal sources such as a resistor-divider network to sense high-voltage signals. The integrated isolated DC/DC converter allows measurement of non-ground-referenced signals and makes the device a unique solution for noisy, space-constrained applications.

The excellent performance of the device supports accurate voltage monitoring and control. The integrated DC/DC converter fault-detection and diagnostic output pin of the AMC3330-Q1 simplify system-level design and diagnostics.

The AMC3330-Q1 is specified over the temperature range of –40°C to +125°C.