S9684 Datasheet, PDF (1/2 Pages) Hamamatsu Corporation – Photo IC for laser beam synchronous detection

PHOTO IC
Photo IC for laser beam synchronous detection
S9684 series
High-sensitivity and high-speed photo IC for high precision printing
S9684 series photo IC uses a dual-element Si PIN photodiode and compares the two signals to obtain a highly stable output even when laser
power or ambient temperature fluctuates. The current amplifier is available with two gain levels (6 times and 20 times) according to laser power to
be used. Hamamatsu also provides S9703 series photo IC that uses a single-element Si PIN photodiode.
Features
l Photo IC for precision printing
l High sensitivity
Current amplifier gain: 20 times (S9684)
6 times (S9684-01)
l Digital output
l Small package
l Suitable for lead-free solder reflow
l Active area (PD1: 2.5 × 0.5 mm, PD2: 2.5 × 0.3 mm)
Applications
l Print start timing detection for laser printers, digital copiers,
fax machines, etc.
s Absolute maximum ratings (Ta=25 °C)
Parameter
Symbol
Value
Unit
Supply voltage
Vcc
-0.5 to +7
V
Power dissipation *¹
P
300
mW
Output voltage *²
Vo
-0.5 to +7
V
Output current
Io
5
mA
Ro1, Ro2 terminal current
IRO
3
mA
Operating temperature
Topr
-25 to +80
°C
Storage temperature
Tstg
-40 to +85
°C
*1: Derate power dissipation at a rate of -4 mW/°C above Ta=25 °C
*2: Vcc=+0.5 V or less
s Electrical and optical characteristics (Ta=25 °C, λ=780 nm, Vcc=5 V, Ro1=Ro2=5.1 kΩ, unless otherwise noted)
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Current consumption
Icc No input
-
-
4
mA
High level output voltage
VOH IOH=4 mA
4.6
-
-
V
Low level output voltage
VOL IOL=4 mA, *³
-
-
0.3
V
Threshold input power ^S9684
PTH
S9684-01
7.5
26
10
35
12.5
44
µW
Propagation delay time variation
∆tP ∆PI= ±10 %, *^4, *⁵
-
-
±5
ns
Rise time
tr
-
4
7
ns
Fall time
tf
-
4
7
ns
Maximum input power
PI Max.
-
-
PTH × 8
µW
*3: PI=45 µW (S9684), PI=140 µW (S9684-01)
*4: Beam diameter (1/e²)=55 µm, scan speed=1.18 mm/µs
Not including jitter caused by polygon mirror non-uniformity, etc.
*5: PI=45 µW center (S9684), PI=140 µW center (S9684-01)
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