AMC1204

Product Folder Order Now Technical Documents Tools & Software Support & Community AMC1204 SBAS512F – APRIL 2011 – REVISED FEBRUARY 2020 AMC1204 20-MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement 1 Features 1 ±250-mV input voltage range optimized for shunt resistors Safety-related certifications: – 4250-VPK (AMC1204B) basic isolation per DIN VDE V 0884-11: 2017-01 – 3005-VRMS (AMC1204B) isolation for 1 minute per UL1577 – CAN/CSA no. 5A-component acceptance service notice and DIN EN 61010-1 – Working voltage: 1200 VPEAK – Transient immunity: 15 kV/µs High electromagnetic field immunity (see SLLA181A application report) Outstanding AC performance: – SNR: 84 dB (minimum) – THD: –80 dB (maximum) Excellent DC precision: – INL: ±8 LSB (maximum) – Gain Error: ±2% (maximum) External clock input for easier synchronization Fully specified over the extended industrial temperature range 2 Applications Shunt resistor based current sensing in: – Motor controls – Green energy – Inverter applications – Uninterruptible power supplies 3 Description The AMC1204 and AMC1204B are 1-bit digital output, isolated delta-sigma (ΔΣ) modulators that can be clocked at up to 20 MHz. The digital isolation of the modulator output is provided by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This barrier has been certified to provide basic galvanic isolation of up to 4000 VPEAK (AMC1204) and 4250 VPEAK (AMC1204B) accor...