6

AFBR-T524Z Transmitter

The AFBR-T524Z transmitter incorporates a 650nm LED and integrated driver IC in a light gray, nonconductive plastic

Versatile Link housing. Its input data is compatible with TTL logic level. This transmitter can operate from 8MBd to 50MBd

with bi-phase encoded scheme using 1mm plastic optical fiber (POF).

Transmitter Electrical Characteristics

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Supply Current

(Optical Power ON)

40

mA

1

Optical Power ON Delay

7

µs

4

Optical Power OFF Delay

50

µs

3

Input Voltage – Low

–0.3

0.8

V

2

Input Voltage – High

2.0

Vcc+0.3

V

2

Data Input Capacitance

7

pF

Data Input Resistance

2

k

Ω

Notes:

1. For 50% duty cycle data.

2. Standard TTL compatible input.

Transmitter Optical Characteristics

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Output Optical Power (Average),

Normal Power

-8.5

-6

-2

dBm

5

Output Optical Power (Average), OFF

-50

dBm

Extinction Ratio

ER

10

dB

Spectrum Central Wavelength

635

670

nm

6

Rise Time (20%–80%)

6.0

ns

Fall Time (20%–80%)

6.0

ns

Pulse Width Variation

PWV

18

22

ns

7,8

Notes:

5. Measured for 50% duty cycle data after 1meter 0.5 NA 1mm POF with polished connector end face using a large area detector.

6. Central wavelength is defined as:

Ref: EIA/TIA standard FOTP-127/6.1, 1991

7. Pulse width is measured at 50% threshold using a rising edge trigger and a worst case bi-phase test pattern.

8. Electrical input is bi-phase coded at 25Mbps (50MBd)

;

N

i = 1

N

i = 1