S6446 series, S6975
S6446 series and S6975 are designed for camera exposure meters. These photo ICs consist of a dual-element (ball-in-box) photodiode and an IC
integrating a logarithmic amplifier circuit and a thermosensor, etc.
Features
l Photometry in central and peripheral areas
l Clear miniature plastic package (4.5 5.5 mm)
l Low noise
l Built-in thermosensor
l S6446-20: With visual-compensation filter
l S6975: Large photometric output change
(Logarithmic amplifier gain is 1.5 times larger than S6446.)
Applications
l Camera auto exposure meter
l Various photometric applications
P H O T O I C
Photo IC for photometry
Photo IC incorporating a dual-element photodiode and log amp
s
Absolute maximum ratings (Ta=25 C)
Parameter
Symbol
Value
Unit
Supply voltage
Vcc
-0.3 to +7
V
POC terminals
-0.3 to Vcc+0.3
V
Input voltage Other terminals
Vin
Do not input voltage
-
Operating temperature
Topr
-20 to +60
C
Storage temperature
Tstg
-30 to +80
C
Soldering
-
230 C, 3 s
-
s
Recommended operating conditions
Parameter
Symbol
S6446/-20
S6975
Unit
3.0 to 3.5
Supply voltage
Vcc
4.5 to 5.5
4.5 to 5.5
V
Operating temperature
Topr
-15 to +40
C
s
Optical characteristics (Ta=25 C)
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
-
320 to 1100
-
Spectral response range
*
1
-
320 to 730
-
nm
-
960
-
Peak sensitivity wavelength
p
*
1
-
560
-
nm
Center
-
250
-
nA
Peripheral
-
2.5
-
A
Center
-
22
-
nA
Short circuit current
Isc
100 lx ,
A light source
*
1
Peripheral
-
220
-
nA
s
Temperature characteristics *
2
(Ta= -15 to +40 C, based on a value at 25 C)
Parameter
Symbol
Condition
Min. Typ. Max.
Unit
Terminal
Terminal voltage
change
Vrf4
-30
-
30
mV
V
R
Output voltage
temperature coefficient
-
17.8
-
mV/C
TO
Output voltage S6446/-20: 500 mV, S6975: 780 mV
-
2500
-
Output voltage S6446/-20: 1000 mV, S6975: 1550 mV
-
2900
-
Output voltage S6446/-20: 1500 mV, S6975: 2300 mV
-
3000
-
Output voltage
temperature coefficient
Output voltage S6446/-20: 2000 mV, S6975: 3100 mV
-
3100
-
ppm/C
PO
*1: When used with a standard visual compensation filter (0.5 mm thick)
*2: S6446/-20: Vcc=3.2 V, S6975: Vcc=5.0 V
Photo IC for photometry
S6446 series, S6975
7
5
6
4
3
1
2
-
+
GND
TO
-
+
-
+
-
+
-
8
-
+
9
Vcc
POC
PO
V
F
100 k
9
27 k
9
V
R
+
s Equivalent circuit
KPICC0011EB
s
Electrical and optical characteristics *
3
(Ta=25 C)
S6446/-20
S6975
Parameter
Symbol
Condition
Min. Typ. Max. Min. Typ. Max. Unit Terminal
Current consumption
Icc
Vcc=6.5 V, 100 lx ,
A light source *
4
-
3.5
6.0
-
3.5
6.0 mA
Vcc
H Input voltage
V
IH
Vcc
0.7
-
-
Vcc
0.7
-
-
L Input voltage
V
IL
-
-
Vcc
0.3
-
-
Vcc
0.3
V
L Input current
I
IL
V
IN
=0 V
-220 -110 -52 -333 -167 -83
A
POC
Output
switching
Terminal voltage
Vrf
2.05 2.20 2.35 3.25 3.5 3.75
V
Load regulation
Vrf Load current 0 to 2 mA
(with respect to 0.5 mA)
-12
-
12
-12
-
12
mV
V
R
Reference
voltage
Output voltage
V
TO
1.2
-
1.68 1.2
-
1.68
V
Load regulation
V
TO
R
L
=100 k
(with respect to no load)
-10
-
10
-10
-
10
mV
TO
Thermo-
sensor
V
POS
POC terminal
open
1229 1369 1509 1912 2130 2348
Output voltage 1
V
POA
100 lx ,
A light source,
VF terminal
resistance 47 k, *
4
POC terminal
GND
963 1103 1243 1498 1715 1933
mV
Output voltage 1
switching response
ts
Time required to reach within
specified V
POA
value after open
POC terminal is set to GND level
-
-
5
-
-
5
ms
Output voltage 1
load regulation
V
PO1
R
L
=100 k
(with respect to no load)
-10
-
10
-10
-
10
mV
V
PO2
VF terminal resistance 27 k
140 170 270 218 265 420
Output voltage 1 change
V
PO3
VF terminal resistance 100 k
-270 -170 -140 -420 -265 -218 mV
Output change 1
V
PO4
Difference between output voltage
at 1 lx and output voltage 1, *
"
521 545 569 791 828 865 mV
POC terminal
open
769
865 1167
1317
Output change 2
V
PO5
Difference
between output
voltage at 0.1 lx
and output
voltage 1, *
4
POC terminal
GND
793
817
841 1205
1242
1279
mV
Power supply response
tp
Time required to reach within
specified V
PO5
value after
power is turned on
-
-
80
-
-
80
ms
PO
Photometric
output
*3: S6446/-20: Vcc=3.2 V, S6975: Vcc=5.0 V
*4: When used with a standard visual compensation filter (0.5 mm thick)
Photo IC for photometry
S6446 series, S6975
s Photometric output vs. illuminance
KPICB0044EA
ILLUMINANCE (lx)
OUTPUT
VOLTAGE
(V)
0
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
10
5
1
2
3
4
5
(Typ. Ta=25 C, "A" light source, used with a standard visual
compensation filter, terminal resistance 47 k
, Vcc=5.0 V)
CENTER
PERIPHERAL
KPICB0045EA
ILLUMINANCE (lx)
OUTPUT
VOLTAGE
(V)
(Typ. Ta=25 C, "A" light source, used with a standard visual
compensation filter, terminal resistance 47 k
, Vcc=5.0 V)
0
10
-3
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
10
5
1
2
3
4
5
CENTER
PERIPHERAL
S6975
S6446 series
Photo IC for photometry
S6446 series, S6975
HAMAMATSU PHOTONICS K.K., Solid State Division
1126-1 Ichino-cho, Hamamatsu City, 435-8558 Japan, Telephone: (81) 053-434-3311, Fax: (81) 053-434-5184, http://www.hamamatsu.com
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P.O.Box 6910, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1) 908-231-0960, Fax: (1) 908-231-1218
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49) 08152-3750, Fax: (49) 08152-2658
France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: 33-(1) 69 53 71 00, Fax: 33-(1) 69 53 71 10
United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: (44) 1707-294888, Fax: (44) 1707-325777
North Europe: Hamamatsu Photonics Norden AB: Smidesvgen 12, SE-171 41 Solna, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01
Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39) 02-935-81-733, Fax: (39) 02-935-81-741
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions.
Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. 2001 Hamamatsu Photonics K.K.
Cat. No. KPIC1017E02
Apr. 2001 DN
0.89
0.40
1.5 0.2
4.6 0.2
(INCLUDING BURR)
0.4 0.2
0.5
1.5 0.4
1.5 0.4
4.5
1.8
1.2
2-ELEMENT
PHOTODIODE
7.5 0.3
0.7 0.3
0.7 0.3
0.25
0.1
3
5
5.5
5.4
5.6 0.2
(INCLUDING BURR)
2.0
3
1.0
10
CATHODE
CATHODE
GND
TO (THERMOSENSOR)
VF (PHOTOMETRIC OUTPUT ADJUSTMENT)
VR (REF VOLTAGE OUTPUT)
POC (SELECTS CENTRAL ELEMENT
WHEN "H" OR OPEN)
PO (PHOTOMETRIC OUTPUT)
Vcc
NC
Tolerance unless otherwise
noted: 0.1, 2
Shaded area indicates burr.
0.7 0.15
s Dimensional outlines (unit: mm)
0.89
0.40
1.5 0.2
4.6 0.2
(INCLUDING BURR)
0.4 0.2
0.5
1.5 0.4
1.5 0.4
4.5
1.8
1.2
2-ELEMENT
PHOTODIODE
7.5 0.3
0.7 0.3
0.7 0.3
0.25
0.1
3
5
5.5
5.4
5.6 0.2
(INCLUDING BURR)
2.0
3
1.0
10
CATHODE
CATHODE
GND
TO (THERMOSENSOR)
VF (PHOTOMETRIC OUTPUT ADJUSTMENT)
VR (REF VOLTAGE OUTPUT)
POC (SELECTS CENTRAL ELEMENT
WHEN "H" OR OPEN)
PO (PHOTOMETRIC OUTPUT)
Vcc
NC
VISUAL COMPENSATION
FILTER
(2.6 3.9 0.5)
Tolerance unless otherwise
noted: 0.1, 2
Shaded area indicates burr.
0.7 0.15
S6446, S6975
S6446-20
KPICA0013EB
KPICA0041EA
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ZIP