GP1F351T Datasheet, PDF (6/7 Pages) Sharp Electrionic Components – Optical Mini-Jack for Digital Audio Equipment

GP1F351T/GP1F351R
Test item
Test item
Low→High pulse delay time
High→Low pulse delay time
Symbol
t PLH
t PHL
Standard
Transmitter
Input signal
(CH1)
t_r
t_f
50%
Rise time
Fall time
tr
V_OH
tf
GP1F351R
90%
Pulse width distortion
∆ tw = t PHL - t PLH
∆tw
Output signal
(CH2)
50%
High level output voltage
VOH
V_OL
10%
Low level output voltage
VOL
t_PLH
t_PHL
Note ) ( 1) VCC = 5.0 ± 0.05V ( State of operating)
( 2) The fiber coupling light output set at - 14.5dBm/- 24.0dBm.
( 3) The probe for the oscilloscope must be more than 1MΩ and less than 10pF.
( 4) Rsi, Rso : Standard load resistance (Rsi : 3.3kΩ , Rso : 2.2kΩ )
( 5) The output ( H/L level) of GP1F351R are not fixed constantly when it receivers the disturbing light
( including DC light, no input light ) less than 0.1Mbps.
Fig. 6 Measuring Method of Jitter
Standard
transmitter
Vin Vcc
GND
5V
Input
fiber optic cable
Input signal 3Mbps biphase PRBS signal
GP1F351R
Unit to be measured
Vcc GND Vout
Vcc Rso
Rsi
CH1
CH2
Oscilloscope
Tektronix 7834
or 7934 type
Trigger ; CH1
Storage mode
Sweep ; AUTO/NORM
Input signal
GP1F351R
output
∆ tjr ∆ tjf
50%
50%