Versatile Link Fiber-Optic Transmitter
HBBR-1521Z Fiber Link is able to transmit TTL data up to 5Mbaud@53meter distance. It uses a 5V supply, 660nm LED and it has High EMI immunity and voltage isolation.
This module enables users to establish a versatile fiber-optic link for applications requiring a low-cost/high immunity solution. It transmits TTL source data over a fiber-optic connection, supporting transmission distances of up to 19 meters with standard fiber-optic cable and up to 53 meters with enhanced cable.
Designed for a 5V power supply, the transmitter supports TTL input data rates of up to 5 Mbaud. Typical applications include systems that require voltage isolation/insulation, EMI/RFI immunity, or enhanced data security. The design of the optical link is simplified by logic-compatible receivers and complete specifications provided for each component.
The transmitter incorporates a 660-nm LED. IC U1 and resistor R1 supply the majority of the drive current to the LED. The design uses the HBBR-1521Z transmitter module, which supports data rates up to 5 Mbaud. For applications requiring different data rates, refer to the provided table for suitable replacement modules supporting both lower and higher speeds.
Features
- Power Supply 5V DC
- Input TTL Signal
- SMA Connector for Input
- 3 Pin Header for the Power Input
- 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
- The estimated typical link life expectancy at 40°C exceeds 10 years at 60 mA
- High noise immunity
- Internal optics have been optimized for use with 1-mm diameter polymer optical fiber.
- Easy connecting: simplex, duplex, and latching connectors Flame retardant
- Transmitters with a 660-nm red LED for easy visibility
- Compatible with standard TTL circuitry
- PCB dimensions 32.86 x 28.26 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 = Data Input, Pin 2 = VCC 5V DC, Pin 3 = GND
- J1: SMA Connector for the Data Input
Schematic
Parts List
| NO. | QNTY. | REF. | DESC. | MANUFACTURER | SUPPLIER | SUPPLIER PART NO |
|---|---|---|---|---|---|---|
| 1 | 1 | CN1 | 3 PIN MALE HEADER PITCH 2.54MM | WURTH | DIGIKEY | 732-5316-ND |
| 2 | 1 | C1 | 10uF/16V TANTLUM 1210 | YAGEO/MURATA | DIGIKEY | |
| 3 | 1 | R1 | 51E 1% SMD SIZE 1206 | YAGEO/MURATA | DIGIKEY | |
| 4 | 1 | U1 | SN75451 DIP8 | TI | DIGIKEY | 296-1746-5-ND |
| 5 | 1 | U2 | HFBR-1521Z | BROADCOM | DIGIKEY | 516-2043-ND |
| 6 | 1 | C2 | 100nF/50V CERAMIC SMD SZE 1206 | YAGEO/MURATA | DIGIKEY | |
| 7 | 1 | J1 | SMA CONNECTOR RIGHT ANGLE | ADAM TECH | DIGIKEY | 2057-RF2-03E-T-00-50-G-ND |
Application Diagram
Cable Connection
Connections
System Performance vs Cable Selection
Transmitter Connector
Link Selection Guide
Gebrer View
Photos
