S9705_15 Datasheet, PDF (2/5 Pages) Hamamatsu Corporation – Light-to-frequency converter photo IC

Light-to-frequency converter photo IC
S9705
Electrical and optical characteristics (RESET=“L”, Vdd=5 V, Ta=25 °C, unless otherwise noted)
Parameter
Symbol
Condition
Min.
Typ.
Max.
Peak sensitivity wavelength
λp
-
550
-
Supply voltage
Vdd
2.7
-
5.5
Current consumption
Idd Dark state, no load
-
Output frequency
fo 2856 K, 100 lx
38
Maximum output frequency
fmax 10 klx, DC light source
300
Response time
tfl 5 lx to 5 mlx, 90%
-
1.5
3.0
50
62
-
1000
-
0.1
Dark frequency
Linearity
Power supply voltage
dependence of output
frequency
fd
-
fo=10 kHz*²
-
Vdd=5 V ± 10%
0
-
2
-3
-
+3
-
±0.5
-
Temperature coefficient of
output frequency
-
Ta=25 ± 10 °C, fo=10 kHz
λ=λp
-
±0.02
-
Delay time
td
-
-
0.1
High level output voltage
Voh Ioh=-0.5 mA
4.5
-
-
Low level output voltage
Vol Iol=0.5 mA
-
-
0.5
Output impedance
Ro RESET=“H”
1
-
-
High level input voltage
Vih RESET
4.0
-
-
Low level input voltage
Vil RESET
-
-
1.0
Input pull-up resistance
Rin RESET=“L”
0.1
1
5
Output pulse duty ratio
D fo=10 Hz
40
50
60
*2: Deviation from the straight line connecting the origin point to the fmax point, normalized by the 10 kHz value.
Unit
nm
V
mA
kHz
kHz
s
Hz
%
%/V
%/°C
μs
V
V
MΩ
V
V
MΩ
%
Spectral response
1.0
S9705
0.8
0.6
(Typ. Ta=25 °C)
Human eye
sensitivity
0.4
0.2
0
300 400 500 600 700 800 900 1000
Wavelength (nm)
KPICB0093EB
Output frequency vs. illuminance
10⁷
(Typ. Ta=25 °C, 2856 K)
10⁶
10⁵
10⁴
10³
10²
10¹
10⁰
10^-₁¹ _0-3
10^-2
10^-1
10⁰
10¹
10²
10³
10⁴
Illuminance (lx)
KPICB0091EC
2