AMC1204
Einfacher isolierter Modulator mit ±250-mV-Eingang und präziser Strommessung
AMC1204
- ±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
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) according to UL1577, VDE V 0884-11, and CSA standards or specifications.
The AMC1204 and AMC1204B provide a single-chip solution for measuring the small signal of a shunt resistor across an isolated barrier. These types of resistors are typically used to sense currents in motor control inverters, green energy generation systems, and other industrial applications. The AMC1204 and AMC1204B differential inputs easily connect to the shunt resistor or other low-level signal sources. An internal reference eliminates the need for external components. When used with an appropriate external digital filter, an effective number of bits (ENOB) of 14 is achieved at a data rate of 78 kSPS.
A 5-V analog supply (AVDD) is used by the modulator while the isolated digital interface operates from a 3-V, 3.3-V, or 5-V supply (DVDD). The AMC1204 and AMC1204B are available in SOIC-16 (DW) and SOIC-8 (DWV) packages and are specified from –40°C to 105°C.
Technische Dokumentation
Typ | Titel | Datum | ||
---|---|---|---|---|
* | Data sheet | AMC1204 20-MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement datasheet (Rev. F) | PDF | HTML | 11 Feb 2020 |
Application brief | Shunt-Widerstandsauswahl für isolierte Datenwandler | PDF | HTML | 15 Aug 2024 | |
White paper | Vergleich isolierter Verstärker und isolierter Modulatoren (Rev. B) | PDF | HTML | 02 Jul 2024 | |
Certificate | VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. W) | 31 Jan 2024 | ||
Certificate | UL Certificate of Compliance File E181974 Vol 4 Sec 1 (Rev. A) | 05 Aug 2022 | ||
Certificate | CSA Certification (Certificate: 220991) (Rev. A) | 23 Okt 2015 | ||
Application note | How to Optimize Performance of AMC1204 in Voltage Sensing | 31 Aug 2015 | ||
Application note | TIC Digital Interface (Rev. A) | 02 Dez 2013 | ||
EVM User's guide | AMC1204EVM User Guide | 06 Aug 2010 |
Design und Entwicklung
Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.
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Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
---|---|---|
SOIC (DW) | 16 | Ultra Librarian |
SOIC (DWV) | 8 | Ultra Librarian |
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