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SBAR013 — Isolated Amplifier Voltage Sensing Excel Calculator
This calculator provides estimates of the errors associated with using isolation amplifier devices in a voltage sensing configuration.
AMC1333M10-Q1
Automotive Reinforced Isolated Delta-Sigma modulator for voltage sensing with 1V input range
AMC1333M10-Q1
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AEC-Q100 qualified for automotive applications:
– Temperature grade 1: –40°C to 125°C, TA
- Linear input voltage range: ±1V
- High input impedance: 2.4GΩ (typ)
- Low DC errors:
- Offset error: ±0.5mV (max)
- Offset drift: ±4µV/°C (max)
- Gain error: ±0.2% (max)
- Gain drift: ±40 ppm/°C (max)
- High CMTI: 100kV/µs (min)
- Internal 10MHz clock generator
- Missing high-side supply detection
- Low EMI: Meets CISPR-11 and CISPR-25 standards
- Safety-related certifications:
- 8000VPEAK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
- 5700VRMS isolation for 1 minute per UL1577
The AMC1333M10-Q1 is a precision, delta-sigma (ΔΣ) modulator with the output separated from the input circuitry by an isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced isolation of up to 8000VPEAK according to the DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 standards, and supports a working voltage up to 1.5kVRMS. The isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-voltage side from voltages that causes electrical damage or be harmful to an operator.
The AMC1333M10-Q1 wide, bipolar, ±1V input voltage range and high input resistance support direct connection of the device to resistive dividers in high-voltage applications. The output bitstream of the AMC1333M10-Q1 is synchronized to the internally generated clock. By using an integrated digital filter (such as those in the TMS320F2807x or TMS320F2837x microcontroller families) to decimate the bitstream, the device achieves 16 bits of resolution with a dynamic range of 87dB at a data rate of 39kSPS.
The AMC1333M10-Q1 is offered in a 8-pin, wide-body, SOIC package and is fully specified over the extended industrial temperature range of –40°C to +125°C.
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SBAR020 — Isolated Amplifier Current Sensing Excel Calculator
This calculator provides estimates of the errors associated with using isolation amplifier devices in a current sensing configuration.
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