AMC3306M05
±50-mV input, precision current sensing reinforced isolated modulator with integrated DC/DC
AMC3306M05
- 3.3-V or 5-V single supply with integrated DC/DC converter
- ±50-mV input voltage range optimized for current measurement using shunt resistors
- Low DC errors:
- Offset error: ±50 µV (max)
- Offset drift: ±0.4 µV/°C (max)
- Gain error: ±0.2% (max)
- Gain drift: ±35 ppm/°C (max)
- High CMTI: 75 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 AMC3306M05 is a precision, isolated delta-sigma (ΔΣ) modulator, optimized for shunt-based current 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 AMC3306M05 is optimized for direct connection to a low-impedance shunt resistor or other, low-impedance voltage source with low signal levels. The excellent DC accuracy and low temperature drift supports accurate current measurments over the extended industial 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.
Technical documentation
Design & development
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AMC3306EVM — AMC3306 precision reinforced isolated modulator with integrated DC/DC converter evaluation module
The AMC3306 evaluation module (EVM) is a platform for evaluating the AMC3306 product, a precision isolated amplifier with an integrated DC/DC converter that powers the high side of the amplifier. AMC3306 is a 7-kV reinforced isolation modulator designed for use in current shunt measuring (...)
SBAR010 — Delta Sigma Modulator Filter Calculator
Supported products & hardware
Products
Isolated ADCs
Precision ADCs
Hardware development
Evaluation board
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
SO-MOD (DWE) | 16 | Ultra Librarian |
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