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AMC3336
±1-V input, precision voltage sensing reinforced isolated modulator with integrated DC/DC
Data sheet
AMC3336
- 3.3-V or 5-V single supply with integrated DC/DC converter
- ±1-V input voltage range optimized for voltage measurements
- Input resistance: 1 GΩ (typ)
- Low DC errors:
- Offset error: ±0.3 mV (max)
- Offset drift: ±4 µV/°C (max)
- Gain error: ±0.2% (max)
- Gain drift: ±40 ppm/°C (max)
- High CMTI: 90 kV/µs (min)
- System-level diagnostic features
- Low EMI: Meets CISPR-11 and CISPR-25 standards
- Safety-related certifications:
- 6000-VPEAK reinforced isolation per DIN VDE V 0884-11
- 4250-VRMS isolation for 1 minute per UL1577
- Fully specified over the extended industrial temperature range: –40°C to +125°C
The AMC3336 is a precision, isolated delta-sigma (ΔΣ) modulator, optimized for high-impedance AC voltage measurements. The fully integrated, isolated DC/DC converter allows single-supply operation from the low-side of the device, which makes the device a unique solution for space-constrained applications. The reinforced capacitive isolation barrier is certified according to VDE V 0884-11 and UL1577 and supports a working voltage of up to 1.2 kVRMS.
The isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-voltage side from hazardous voltages and damage.
The input of the AMC3336 is optimized for direct connection to a resistor network or other, high-impedance voltage-signal source. The excellent DC accuracy and low temperature drift support accurate voltage measurements over the extended industrial temperature range from –40°C to +125°C.
By using a digital filter (such as a sinc3 filter) to decimate the bitstream, the device can achieve 16 bits of resolution with a dynamic range of 85 dB at a data rate of 78 kSPS.
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Evaluation board
AMC3336EVM — AMC3336 evaluation module with integrated DC/DC converter and high CMTI
The AMC3336 evaluation module (EVM) is a platform for evaluating the AMC3336, a precision isolated modulator with an integrated DC/DC converter that powers the high side of the amplifier. AMC3336 is a 7-kV reinforced isolated modulator designed for use in current shunt measuring applications.
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SO-MOD (DWE) | 16 | Ultra Librarian |
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