Description

The ACPL-796J is a 1-bit, second-order sigma-delta (Σ-Δ) modulator converts an analog input signal into a high-speed data stream with galvanic isolation based on optical coupling technology. The ACPL-796J operates from a 5 V power supply with dynamic range of 80 dB with an appropriate digital filter. The differential inputs of ±200 mV (full scale ±320 mV) are ideal for direct connection to shunt resistors or other low-level signal sources in applications such as motor phase current measurement.

Features

• 5 MHz to 20 MHz external clock input range

• 1-bit, second-order sigma-delta modulator

• 16 bits resolution no missing codes (12 bits ENOB)

• 74 dB minimum SNR

• 3.5 μV/°C maximum offset drift

• ±1 maximum gain error

• Internal reference voltage

• ±200 mV linear range with single 5 V supply

• 3 V to 5.5 V wide supply range for digital interface

• –40°C to +105°C operating temperature range

• SO-16 package

• 25 kV/μs common-mode transient immunity

• Safety and regulatory approval:

IEC/EN/DIN EN 60747-5-5: 1414 Vpeak working

insulation voltage

UL 1577: 5000 Vrms/1min double protection rating

CSA: Component Acceptance Notice #5

Applications

• 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