ACPL-7970 - AVAGO

ACPL-7970 Optically Isolated Sigma-Delta Modulator

The ACPL-7970 is a 1-bit, second-order sigma-delta (∑-∆) modulator converts an analog input signal into a highspeed data stream with galvanic isolation based on optical coupling technology. The ACPL-7970 operates from a 5 V power supply with dynamic range of 78 dB with an appropriate digital filter. The differential inputs of ±200 mV (full scale ±320 mV) are.

Features

• 10 MHz internal clock
• 1-bit, second-order sigma-delta modulator
• 16 bits resolution no missing codes (12 bits ENOB)
• 78 dB SNR
• 6 mV/°C maximum offset drift
• ±1% maximum gain error
• Internal reference voltage
• ±200 mV linear range with single 5 V supply (±320 mV full scale)
• 3 V to 5.5 V wide supply range for digital interface
• -40° C to +105° C operating temperature range
• 25 kV/ms common-mode transient immunity
• Safety and regulatory approvals:
  – IEC/EN/DIN EN 60747-5-5: 891 Vpeak working insulation voltage
  – UL 1577: 5000 Vrms/1min isolation voltage
  – CSA: Component Acceptance.