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). The serial interface is digitally isolated. High speed complementary metal-oxide semiconductor (CMOS) technology, combined with monolithic transformer technology, results in the on-chip isolation providing outstanding performance characteristics, superior to alternatives such as optocoupler devices. The ADuM7704 is available in a 16-lead, wide-body SOICW with an operating temperature range of −40°C to +125°C and an 8-lead, wide-body SOICIC with an operating temperature range of −40°C to +105°C. APPLICATIONS * Shunt current monitoring * AC motor controls * Power and solar inverters * Wind turbine inverters * Analog-to-digital and optoisolator replacement * 5 MHz to 21 MHz main 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 SOICW) * −40°C to +105°C (8-lead SOICIC) * High isolation common-mode transient immunity: 150 kV/µs minimum, VDD2 = 3.3 V * Wide-body SOICs https://elecena.pl/product/17774275/16-bit-isolated-sigma-delta-modulator 2021-04-17 https://elecena.pl/product/17774275/16-bit-isolated-sigma-delta-modulator 2025-01-17