S9684_ETC_KPIC1056E07 Datasheet, PDF (3/4 Pages) Hamamatsu Corporation – S9684 series

Photo IC for laser beam synchronous detection
S9684 series, S11282-01DS
Output waveforms of terminals 2, 3 and 5
PD1 PD2
Scanning
direction
RO1
RO2
VO
KPICC0131EA
Function
These products integrate a photodiode chip and an IC chip into the same
package. The photodiode chip is internally connected to the IC chip as shown
in the block diagram. The products should be used with terminals Ro1 and Ro2
connected to an external gain resistance.
Two photocurrents are generated when a laser beam enters the dual-element
photodiode. Each photocurrent is fed to the input terminal of the IC and, after
being amplified by the current amplifier, flows to the external gain resistance.
At this time, voltages VRO1 and VRO2 at terminals Ro1 and Ro2 are given by the
following expression.
VRO1 (VRO2)=A × S × PI × Ro1 (Ro2) [V]
A: Current amplifier gain (S9684, S11282-01DS: 20 times, S9684-01: 6 times)
S: Photodiode sensitivity [A/W] (approx. 0.45 A/W at 780 nm)
PI: Input power [W]
Ro1, Ro2: External gain resistance [Ω]; usable range 2 kΩ to 10 kΩ
VRO1 and VRO2 are input to the internal comparator so the output Vo is "high"
when VRO1 > VRO2 or "low" when VRO1 < VRO2.
Note that VRO1 and VRO2 should not exceed 8 times of the voltage calculated
from the threshold light level.
Dimensional outline (unit: mm)
3.2 ± 0.2
(Including burr) _{0.67 (center of}
photosensitive area)
0.8
Photosensitive
surface
0.5 0.3
0.5
0.3
1.0 ± 0.4
3.0*
1.0 ± 0.4
0.45 ± 0.3
5.0 ± 0.3
3.0*
2.8
2.4
Mirror area
range
0.45 ± 0.3
Photosensitive
surface
2.9
3.0*
0.05
0.27
0.75
1.3
PD2 PD1
Details of photodiode
Tolerance unless otherwise noted: ±0.1, ±2°
Shaded area indicates burr.
Chip position accuracy with respect to
package dimensions marked *
X, Y≤±0.2, 0≤±2°
Packing: stick (100 pcs/stick)
Tape-and-reel shipment is available (S9684-30/-31).
Vcc
Ro1
OUT
GND
Ro2
GND
GND
GND
GND
GND
KPICA
KPICA0056ED
3