Broadcom ACPL-0873 3-channel digital filter
A 3-channel digital filter designed specifically for Second Order Sigma Delta Modulators in voltage and current sensing
A 3-channel digital filter designed specifically for Second Order Sigma Delta Modulators in voltage and current sensing. Each input channel can receive an independent Sigma-Delta (Σ-Δ) modulator bit stream. The bit streams are processed by 3 individually programmable digital decimation filters. Features of the digital filter include 4 decimation ratios for Sinc2 mode and 3 decimation ratios for Sinc3 mode, offset calibration and fast over-range detection. Synchronization of inputs from 3 channels is done internally by the filter alignment.
Key features
- 3 Independently Programmable Digital Filters
- Synchronizing sampling time
- Offset Calibration
- SPI-compatible Interface
Additional features
- Direct Interface between Isolated Sigma-Delta Modulator and MCU/DSP
- Fast Over-range Detection
- Channel 1 MCLK clock detection
- Programmable Input Configuration
- Compact surface mount QFN-20 5mmx5mm·
- Operating Temperature -40°C to 125°C
- SPI clock frequency up to 25MHz
- Modulator clock frequency MCLK up to 25MHz
Applications
- Electric motor phase and rail current sensing
- DC/DC converter current sensing
- AC-DC charger current sensing
- Battery current sensing
- General voltage or current sensing
ebv content library/npi/2018/broadcom-acpl-0873
Broadcom ACPL-0873 3-channel digital filter | EBV Elektronik
