FTM Board Club
High speed digital input current limiter evaluation board based on SCLT3-8BQ7

This evaluation board implements an 8-line protected digital input termination with serialized state transfer for Programmable Logic Controllers. It is based on the SCLT3-8BQ7 device.

The SCLT3-8BQ7 enhances the I/O module density by cutting the dissipation (78 mW per input) and reducing the opto-transistor count. An adjustable digital filter and an LED driver are embedded in each input section. Its 2 MHz SPI peripheral output serializes the input state transfer to the I/O module controller.

The STEVAL-IFP030V1 evaluation board illustrates the flexibility of the SCTL3-8BQ7 with: 8/16-bit mode with parity check, temperature and voltage alarms; daisy-chain capability; adjustable digital minimal filter time (20 Ás /160 Ás).

The STEVAL-IFP030V1 evaluation board can be chained with many other STEVAL-IFP030V1 evaluation boards.

The adapter board can be placed between the first STEVAL-IFP030V1 evaluation board of the chain and the STEVAL-PCC009V2 STM32x microcontroller evaluation board. This adapter provides 2 buses: isolated and non-isolated.

  • 8 inputs - 8-bit SPI output
  • High side input with common ground
  • 5 V voltage regulator
  • Package: QFN 7 x 7 - 48L
  • 30 V reverse polarity capable
  • Adjustable current limiters
  • LED output for visual status
  • Optional 16-bit mode with parity check, temperature and voltage alarms
  • Daisy chain capable
  • Input digital filter with adjustable 20 to 160 Ás delay
  • Power dissipation 78 mW per channel
  • RoHS compliant