Broadcom's ACPL-C799 is a 1-bit, second-order sigma-delta (Σ-Δ) modulator that converts an analog input signal into a high-speed data stream with galvanic isolation based on optical coupling technology. The ACPL-C799 operates from a 5 V power supply with dynamic range of 77 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
- 10 MHz internal clock
- 1-bit, second-order sigma-delta modulator
- 16-bits resolution no missing codes (12-bits ENOB)
- 77 dB SNR typ
- 1.3 μV/°C maximum offset drift
- ±1% gain error
- Internal reference voltage
- ±50 mV linear range with single 5 V supply (±80 mV full scale)
- 3 V to 5.5 V wide supply range for digital interface
- -40°C to +105°C operating temperature range
- SSO-8 package
- 25 kVμs 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 isolation voltage
- CSA: component acceptance notice #5
Applications
- Servo drives and motors
- Motor phase and rail current sensing
- Power inverter current sensing
- Industrial process control
- Data acquisition systems
- General purpose current sensing
- Traditional current transducer replacements
