Fiber Opt Click 5V

How does it work?

Fiber Opt Click 5V is based on one IF-D91, a fiber-optic photodiode, and one IF-E97, a fiber-optic LED, both from Industrial Fiber Optics. IF-D91 is a high-speed photodiode detector housed in a connector-less plastic fiber optic package, where optical response extends from 400 to 1100nm, making it compatible with a wide range of visible and near-infrared LED and laser diode sources. The detector package features an internal micro-lens and a precision-molded PBT housing to ensure efficient optical coupling with standard 1000μm core 2.2mm jacketed plastic fiber cable capable of 100Mbps data rates. The IF-D91 can also be used for analog video links with bandwidths up to 70MHz.

The other precision-molded PBT housing with internal micro-lens, the IF-E97, is a high-optical-output visible red LED. The housing ensures efficient optical coupling with the same standard jacketed plastic fiber cable. The output spectrum is produced by a GaAlAs die which peaks at 650nm, representing an optimal transmission window for PMMA plastic optical fiber. The visible red light has low attenuation in PMMA plastic fiber, aids troubleshooting installations, and is the main reason the IF-E97 achieves data rates of 1Mbps.

This Click board™ communicates with the host MCU over selectable pins of the mikroBUS™ socket, the UART, or some general-purpose pins. Communication can be selected through the GPIO UART selection jumper, as UART is selected by default. Otherwise, communication can be achieved directly through GPIO pins, where PWM and INT pins of the mikroBUS™ socket have that role. Also, using AN pin, it is possible to check the analog voltage of the fiber-optic photodiode.

This Click board™ can be operated only with a 5V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development.

Specifications

Pinout diagram

This table shows how the pinout on Fiber Opt Click 5V corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
Analog Signal	AN	1	AN	PWM	16	PWM	GPIO RX
	NC	2	RST	INT	15	INT	GPIO TX
	NC	3	CS	RX	14	RX	UART TX
	NC	4	SCK	TX	13	TX	UART RX
	NC	5	MISO	SCL	12	NC
	NC	6	MOSI	SDA	11	NC
Power Supply	3.3V	7	3.3V	5V	10	NC
Ground	GND	8	GND	GND	9	GND	Ground

Onboard settings and indicators

Fiber Opt Click 5V Click electrical specifications