Analog Devices Inc. Modulatori sigma-delta isolati a 16 bit AD7405
Analog Devices AD7405 16-Bit, Isolated Sigma-Delta Modulators are high performance, second-order, Σ-Δ modulators with on-chip digital isolation based on iCoupler® technology. I modulatori AD7405 convertono un segnale di ingresso analogico in un flusso di dati a bit singolo e ad alta velocità LVDS. Operating from a 4.5V to 5.5V (VDD1) power supply, AD7405 accepts a differential input signal of ±250mV (±320mV full-scale). I modulatori sigma-delta isolati a 16 bit AD7405 di Analog Devices sono ideali per il monitoraggio di tensione shunt nelle applicazioni da alta tensione che richiedono un isolamento galvanico. Diponibili in un package SOIC a 16 cavi a corpo largo con un gamma di temperature di funzionamento da −40 °C a +125 °C, i modulatori AD7405 sono particolarmente adatti per monitoraggio di correnti shunt, controllo di motori CA, invertitori di potenza e solari, invertitori di turbine eoliche, sistemi di acquisizione dati e per i ricambi da analogico a digitale e gli isolatori ottici.
The Analog Devices AD7405 AD7405 16-bit, isolated sigma-delta modulators are ideal for shunt voltage monitoring in high voltage applications requiring galvanic isolation. Available in a 16-lead, wide-body SOIC package with an operating temperature range of −40°C to +125°C, AD7405 modulators are particularly well-suited for shunt current monitoring, AC motor controls, power and solar inverters, wind turbine inverters, data acquisition systems, and analog-to-digital & opto-isolator replacements.
Caratteristiche
- 5MHz to 20 MHz external clock input rate
- 16 bits, no missing codes
- 88dB Signal-to-noise ratio (SNR) typical
- 14.2 Effective number of bits (ENOB)
- 1.6μV/°C typical offset drift vs. temperature
- Low voltage differential signaling (LVDS) interface
- On-board digital isolator
- On-board reference
- ±320mVf ull-scale analog input voltage range
- −40°C to + 125°C operating temperature range
- >25kV/μs high common-mode transient immunity
- 16-lead, wide-body SOIC_IC, with increased creepage package
- Safety and regulatory approvals
- UL recognition
- 5000Vrms for 1 minute per UL 1577
- CSA Component Acceptance Notice 5A
- VDE Certificate of Conformity
- DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
- 1250VPEAK maximum working insulation voltage (VIORM)
- UL recognition
Applicazioni
- Shunt current monitoring
- AC motor controls
- Power and solar inverters
- Wind turbine inverters
- Data acquisition systems
- Analog-to-digital and opto-isolator replacements
Functional Block Diagram
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