L12557-01SR_15 Datasheet, PDF (2/4 Pages) Hamamatsu Corporation – Photo IC for optical link

Photo IC for optical link
L12557-01SR, S12423-01SR
L12557-01SR
Electrical and optical characteristics (Ta=25 °C, Vcc=4.75 to 5.25 V, unless otherwise noted)
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Current consumption
Icc Vin=2.0 V
-
-
40
mA
Data transmission rate
fD
Biphase signal
(NRZ conversion)
DC
-
10
Mbps
Peak emission wavelength
λp
630
650
670
nm
Temperature coefficient of
peak emission wavelength
Tcλ
-
0.13
-
nm/°C
Spectral half width (FWHM)
∆λ
-
20
30
nm
Fiber coupling optical output
Po Peak value*³
-10.0
-
-1.0
dBm
Rise time
tr
20 to 80%*³ *⁴ *⁵
-
-
20
ns
Fall time
tf
80 to 20 %*³ *⁴ *⁵
-
-
20
ns
Pulse width distortion
∆Tw 50%*³ *⁴ *⁵
-15
-
+15
ns
Jitter
∆tj
*³ *⁴ *⁵
-
-
20
ps
*3: For the fiber, use Mitsubishi Rayon GH4001 (ϕ1 mm, SI-POF, NA=0.5, 1 m).
*4: For the input signal, a 10 Mbps pseudo-random biphase signal is assumed.
*5: Defined using the average at 50% duty ratio
S12423-01SR
Electrical and optical characteristics (Ta=25 °C, Vcc=3.135 to 3.465 V, unless otherwise noted)
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Data rate
fD
Biphase signal
(NRZ conversion)
DC
-
10
Mbps
Current consumption
Icc No optical input
-
-
40
mA
Maximum receiver level
Pi max Peak value*⁶
2
-
-
dBm
Minimum receiver level
Pi min Peak value, Pe=10^-7*⁶
-
-
-20
dBm
High level output voltage Voh Ioh=-150 μA
2.7
-
-
V
Output voltage
Low level output voltage Vol Iol=1.6 mA
Rise time
tr
20% to 80%*⁴ *⁷
-
-
-
0.4
V
-
20
ns
Fall time
tf
20% to 80%*⁴ *⁷
-
-
20
ns
Pulse width distortion
∆t
*⁴ *⁶ *⁷
-25
-
+25
ns
Jitter
∆tj
*⁴ *⁶ *⁷
-
-
20
ns
*6: A signal generated by a Hamamatsu’s standard signal generator is assumed for the optical input signal.
*7: CL=5 pF (including parasitic capacitance of probe, connector, and printed circuit board)
Input light
waveform
T1
tr tf
Output
waveform
T2
50%
TPLH
Input light
waveform
80%
50%
20%
∆T=T2 - T
Output
waveform
∆tjr
TPHL
50%
50%
∆tjf
Parameter Symbol
Measurement method
Set the trigger to the PPG CLK,
Rising edge jitter ∆tjr and measure the jitter in the
rising edge of the output.
Set the trigger to PPG CLK,
Falling edge jitter ∆tjf and measure the jitter in the
falling edge of the output.
Jitter
∆tj
Set Δtj to the larger of the two
jitter values: Δtjr and Δtjf.
KPICC0250EA
Note [L12557-01SR, S12423-01SR]:
· ^{Connect a 0.1 μF bypass capacitor within 3 mm of this element’s lead (between Vcc and GND). In addition, connect a 4.7 μF capacitor.}
· ^{Align the center axes of the fiber and package lens, and make the gap between the fiber and the optical reference plane of the lens}
surface 0.1 mm.
2