Versatile Link Fiber-Optic Receiver
HBBR-2521Z Fiber Link is able to receive TTL data up to 5Mbaud@53meter distance. It uses a 5V supply and it has High EMI immunity and voltage isolation.
This module enables users to create a versatile fiber-optic link for applications requiring a low-cost solution. This receiver module receives data through a fiber-optic link and outputs standard TTL-level signals. It supports transmission distances of up to 19 meters with standard fiber-optic cable and up to 53 meters with enhanced cable.
Operating from a 5V power supply, the receiver supports data rates of up to 5 Mbaud. Typical applications include systems that require voltage isolation/insulation, EMI/RFI immunity, or improved data security. The optical link design is simplified by the use of logic-compatible receivers and the availability of complete specifications for each component.
Receiver include a monolithic DC-coupled, digital IC receiver with an open collector Schottky output transistor. An internal pull-up resistor is available. A shield has been integrated into the receiver IC to provide additional, localized noise immunity. Internal optics have been optimized for use with 1-mm diameter polymer optical fibre. Versatile Link specifications incorporate all connector interface losses. Therefore, optical calculations for common link applications are simplified.
The design incorporates the HBBR-2521Z receiver module, which supports data rates up to 5 Mbaud. For applications requiring other speeds, refer to the provided table for alternative modules that support both lower and higher data rates.
Features
- Power Supply 5V DC
- Output Signal TTL
- SMA Connector for Output
- 3 Pin Header for the Power Input
- Rx Output connector current 25mA
- Enhanced digital links: DC to 5 Mbaud
- Link distance with standard cable 19Meters
- Link distance up to 53Meters with improved cable
- The propagation delay for one meter of cable is typically 5 ns
- High noise immunity
- Easy connecting: simplex, duplex, and latching connectors Flame retardant
- Compatible with standard TTL circuitry
- PCB dimensions 32.86 x 28.42 mm
- PCB Mounting Holes 4 x 3 mm
Applications
- Reduction of lightning/voltage transient susceptibility
- Motor controller triggering
- Data communications and local area networks
- Electromagnetic compatibility (EMC) for regulated systems such as FCC, VDE, and CSA
- Tempest-secure data processing equipment
- Isolation in test and measurement instruments
- Error-free signalling for industrial and manufacturing equipment
- Automotive communications and control networks
- Noise-immune communication in audio and video equipment
Connections
- CN1: Pin 1 = GND, Pin 2 = VDD 5V DC, Pin 3 = Data Output
- J1: Data Output
Schematic
Parts List
| NO. | QNTY. | REF. | DESC. | MANUFACTURER | SUPPLIER | SUPPLIER PART NO |
|---|---|---|---|---|---|---|
| 1 | 1 | CN2 | 3 PIN MALE HEADER PITCH 2.54MM | WURTH | DIGIKEY | 732-5316-ND |
| 2 | 1 | C3 | 100nF/50V CERAMIC SMD SIZE 0805 | YAGEO | DIGIKEY | |
| 3 | 1 | U3 | HFBR-2521Z | BROADCOM | DIGIKEY | 516-2062-ND |
| 4 | 1 | C4 | 10uF/16V TANTLUM 1210 | MURATA | DIGIKEY | |
| 5 | 1 | J1 | SMA CONNECTOR RIGHT ANGLE | ADAM TECH | DIGIKEY | 2057-RF2-03E-T-00-50-G-ND |
Connections
Application Diagram
Optical Cable Connection
Gerber View
System Performance vs Cable Selection
Receiver Diagram
Link Selection Guide
Photos
