S8046 Datasheet, PDF (1/2 Pages) Hamamatsu Corporation – Photo IC for optical link

PHOTO IC
Photo IC for optical link
S8046
Receiver with sleeping mode suitable for 50 Mbps optical link
S8046 is optical communication devices designed for POF (Plastic Optical Fiber) data links. S8046 is a high sensitivity, high-speed
photo IC that receives signals at 50 Mbps and covers a wide dynamic range of 21.5 dB. The output is TTL compatible. S8046 also
features a sleeping mode in which operation automatically switches to low power dissipation mode when no light is input and
switches back to normal operation mode when light is input from the optical fiber. The internal IC checks which mode is currently
selected and this check signal is available from the mode output terminal. Current consumption in sleeping mode is approximately
1/400th that of normal operation mode.
Features
l Sleeping mode (low power dissipation)
l 4 to 50 Mbps
l Monolithic photo IC
l High reliability
l TTL output
l Wide dynamic range
l Designed to be used with L8045
Applications
l High-speed data transmission even under poor environmental
conditions with high noise
s A bsolu te m axim um ratings (Ta=25 °C )
Param eter
Sym bol
Va lu e
Supply voltage
Vcc
-0.5 to +7.0
O utput voltage
Vo
-0.5 to Vcc+0.5
Output current
Io
10
Power dissipation
P
250 *¹
O perating tem perature
To p r
-40 to +85
Storage tem perature
Ts tg
-40 to +85
S o ld e rin g
-
230 °C , 5 s, at least 1.8 m m away from package surface
*1 : D e ra te p o w e r d iss ip a tio n a t a ra te o f -1 .7 5 m W /°C a b o ve Ta = 2 5 °C
U n it
V
V
mA
mW
°C
°C
-
s E lectrica l a nd o ptica l characteristics (Ta=25 °C , V cc=4.5 to 5.5 V )
Param eter
Sym bol
C ondition
M in .
Typ
Max.
U n it
Data rate
C urrent consum ption (in operation m ode)
fD
Icco
bi-phase signal
*^{2, 3}
4
-
50
Mbps
-
-
40
mA
C urrent consum ption (in sleeping m ode)
M inim um overload
Iccs
Pim ax
Pin= -∞
*^{2, 3, 5, 6}
-
-
100
µA
-8
-
-
dBm
Minim um receiver input power
Pim in
*^{2, 3, 5, 6}
-
-
-28.0
dBm
H level output voltage
Voh
Ioh= -150 µA *^{2, 3}
2.7
-
-
V
O utput L level output voltage
Vol
Iol=1.6 m A *^{2, 3}
-
-
0.4
V
voltage R ise tim e
Fall tim e
tr
tf
20 to 80 % *^{2, 3}
-
-
5
ns
-
-
5
ns
P ulse width distortion
Jitter
Operation mode to sleeping mode switching input power
∆t
∆tj
Psl
*^{2, 3}
*^{2, 3}
*^{2, 3, 5}
-4
-
+8
ns
-
-
5
ns
-
-
-33
dBm
Sleeping mode to operation mode switching input power
Pop
*^{2, 3, 5}
-
-
-30
dBm
Sleeping mode to operation mode switching tim e
tso
*²
-
-
200
µs
Operation mode to sleeping mode switching time
tos
*²
-
-
500
µs
Mode H level voltage
Vmh
*⁷
3.0
-
-
V
output L level voltage
Vml
*⁷
-
-
0.5
V
*2: Input is a pseudo-random bi-phase signal at 50 M bps.
*3: C L=5 pF (including parasitic capacitance of probes, connectors and P C board)
*4 : O p tica l in p u t s ig n a l is g e n e ra te d b y o u r sta n d a rd s ig n a l g e n e ra to r.
*5: Average value (at 50 % duty ratio)
*6 : P e = 1 0 ^-9
*7: “H ” in sleeping m ode, “L” in operation m ode
N o te )
· A bypass capacitor (0.1 µ F) and another capacitor (4.7 µ F) are connected between V cc and G N D at a position within 3 m m from
the lead.
· The center of the optical fiber is aligned with the center of the lens on the package. The distance between the fiber end and the
lens is 0.1 m m .
· O utput becom es undefined at a baud rate less than 4 M bps.
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