Industrial AC/DC converter ADUM7704 series

industrial AC/DC converter
industrial AC/DC converter
industrial AC/DC converter
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Other characteristics

Max.: 20 V

Min.: 5 V

Primary current

10 mA


5 MHz to 21 MHz master clock input frequency Offset drift vs. temperature: ±0.25 μV/°C maximum SNR: 82 dB typical 16 bits, no missing codes Full-scale analog input voltage range: ±64 mV ENOB: 13 bits typical IDD1: 10 mA maximum On-board digital isolator Operating temperature range −40°C to +125°C (16-lead SOIC_W) −40°C to +105°C (8-lead SOIC_IC) High isolation common-mode transient immunity: 150 kV/μs minimum, VDD2 = 3.3 V Wide-body SOICs 16-lead SOIC_W 8-lead SOIC_IC with increased creepage Safety and regulatory approvals UL recognition 5700 V rms for 1 minute per UL 1577 CSA Component Acceptance Notice 5A VDE Certificate of Conformity DIN V VDE V 0884-10: VIORM = 1270 VPEAK DIN V VDE V 0884-11: VIORM = 1060 VPEAK (pending) The ADuM7704 is a high performance, second-order, Σ-Δ modulator that converts an analog input signal into a high speed, single-bit data stream, with on-chip digital isolation based on Analog Devices, Inc., iCoupler® technology. The device operates from a 4.5 V to 20 V power supply range (VDD1) and accepts a pseudo differential input signal of ±50 mV (±64 mV full-scale). The pseudo differential input is ideally suited to shunt voltage monitoring in high voltage applications where galvanic isolation is required. The analog input is continuously sampled by a high performance analog modulator and converted to a ones density digital output stream with a data rate of up to 21 MHz. The original information can be reconstructed with an appropriate sinc3 digital filter to achieve an 82 dB signal-to-noise ratio (SNR) at 78.1 kSPS with a 256 decimation rate and a 20 MHz master clock. The serial input and output operates from a 5 V or a 3.3 V supply (VDD2).


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