ACPL-736J
Optically Isolated ±50 mV Sigma-Delta Modulator with CMOS Interface
The Broadcom® ACPL-736J is a 1-bit, second-order sigma- delta (Σ-Δ) modulator that oversamples an analog input signal into a high speed data stream with galvanic isolation based on optical coupling technology. The ACPL-736J operates from a 5 V power supply with dynamic range of 80 dB with an appropriate digital filter. The differential inputs of ±50 mV (full scale ±80 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 21 MHz external clock input range
- CMOS clock and data interface
- 1-bit, second-order sigma-delta modulator
- 16 bits resolution no missing codes (12 bits ENOB)
- 80 dB typical SNR and 78 dB typical SNDR
- 1.0 µV/°C maximum offset drift
- ±1% maximum gain error
- ±50 mV linear range with single 5 V supply (±80 mV full scale range)
- –40°C to +110°C operating temperature range
- SO-16 package
- 25 kV/μs common-mode transient immunity
- Safety and regulatory approval (pending):
- 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 sensing
- Industrial Process Control
- Data Acquisition Systems
- General purpose current sensing
- Traditional current transducer replacements
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