ACPL-796J-500E

ACPL-796J-500E is an optically isolated sigma-delta modulator. It converts an analogue input signal into a highspeed data stream with galvanic isolation based on optical coupling technology. It operates from a 5V power supply with dynamic range of 80dB with an appropriate digital filter. The differential inputs of ±200mV (full scale ±320mV) are ideal for direct connection to shunt resistors or other low-level signal sources in applications such as motor phase current measurement. The analogue input is continuously sampled by means of sigma-delta over-sampling using external clock, coupled across the isolation barrier, which allows synchronous operation with any digital controller. It is used in applications such as motor phase and rail current sensing, power inverter current and voltage sensing, industrial process control, data acquisition systems, general purpose current and voltage sensing, traditional current transducer replacements.

• 1bit, second-order sigma-delta modulator
• 5MHz to 20MHz external clock input range, internal reference voltage
• 3V to 5.5V wide supply range for digital interface
• Resolution is 16bits, ±200mV linear range with single 5V supply
• Isolation transient immunity is 25kV/μV typ at (VCM = 1KV, TA = -40°C to +105°C)
• Offset drift vs. temperature is 3.5μV/°C typ at (TA = -40°C to +105°C, VDD1 = 4.5V to 5.5V)
• Gain error is 1% max at ( TA = 25°C, VIN+ = –250 to +250mV, TA = -40°C to +105°C
• Signal-to-noise ratio is 80dB typ at (TA = -40°C to +105°C)
• Operating temperature range from -40°C to 105°C
• SO-16 package