Broadcom PE22100 | Demoboard ACPL-C740

Description

The Broadcom ACPL-C740 isolated sigma-delta (Σ-Δ) modulator converts an analog input signal into a high-speed (20 MHz typical) single-bit data stream by means of a sigma-delta over-sampling modulator. The time average of the modulator data is directly proportional to the input signal voltage. The modulator uses an internal speed of 20 MHz. The modulator data are encoded and transmitted across the isolation boundary where they are recovered and decoded into a high-speed data stream of digital ones and zeros. The original signal information is represented by the density of ones in the data output.

Features

• Superior optical isolation and insulation
• 20-MHz internal clock
• 1-bit, second-order sigma-delta modulator
• 16 bits resolution no missing codes (12 bits ENOB)
• 86 dB SNR
• 1 μV/°C maximum offset drift
• ±1% gain error
• Internal reference voltage
• ±200-mV linear range with single 5V supply (±320 mV full scale)
• 3V to 5.5V wide supply range for digital interface
• –40°C to +110°C operating temperature range
• SSO-8 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 isolation voltage
• CSA: Component Acceptance Notice #5

Typical 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

More information

• Datasheet
• IC product information