Fea tures
Two matched de tec tors with pho to -
litho graphic con trol of rela tive po si tion
Dual Pho tologic
cir cuitry in sin gle
pack age pro vides re duced com po nent
count
Open col lec tor inverter out put for flexi -
bil ity of cir cuit in ter face
Low cost plas tic hous ing
De scrip tion
The OPL583 contains a monolithic
integrated circuit which incorporates two
independent photodiodes, linear
amplifiers, Schmitt trigger circuits, and
output transistors served by a common
voltage regulator. The outputs are
TTL/LSTTL compatible and can drive 8
TTL loads over a voltage range from 4.5
to 16 V. Applications include linear and
rotary encoders with resolutions
determined by external apertures. The
fixed relative position of the two
photodiodes and the matched
characteristics of the two channels allow
considerable design flexibility.
Ab so lute Maxi mum Rat ings (T
A
= 25
o
C un less oth er wise noted)
Sup ply Volt age. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V
(5)
Stor age Tem pera ture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40
o
C to +100
o
C
Op er ate Tem pera ture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40
o
C to +85
o
C
Lead Sol der Tem pera ture [1/16 inch (1.6 mm) from case for 5 sec. with sol der ing iron]
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
o
C
(2)
Power Dis si pa tion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mW
(1)
Du ra tion of Out put Short to V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.00 sec.
Volt age At Out put . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V
Low Level Out put Cur rent (sink ing) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 mA
Notes:
(1) Derate linearly 2.67 mW/
o
C above 25
o
C.
(2) RMA flux is recommended. Duration can be extended to 10 sec. max when flow soldering.
Max 20 grams force may be applied to leads when flow soldering.
(3) A 0.01
F capacitor should be used across the V
CC
and GND leads to stabilize the power
supply line.
(4) Irradiance measurements are made with
=
940 nm.
(5) Derate linearly 0.37 V/
o
C above 58
o
C.
Sche matic
Prod uct Bul le tin OPL583
August 1996
Dual Chan nel Pho tologic
En coder De tec tor
Type OPL583
Op tek Tech nol ogy, Inc. 1215 W. Crosby Road Car roll ton, Texas 75006 (972) 323- 2200 Fax (972) 323- 2396
4-16
V
REG
AMP
AMP
4
3
2
1 GND
OUT A
OUT B
V
CC
Type OPL583
Elec tri cal Char ac ter is tics (T
A
= 25
o
C, V
CC
= 4.5 V - 16 V un less oth er wise noted)
SYM BOL
PA RAME TER
MIN TYP MAX UNITS
TEST CON DI TIONS
V
CC
Operating Supply Voltage
(3)
4.5
16
V
E
eT(+)
Positive Going Threshold Irradiance
(4)
0.05
0.10
0.25 mW/cm
2
E
eT
(+)/E
eT
(-) Hysteresis Ratio
1.1
1.5
2.0
MATCH
Channel Match
E
eT
(+,A)/E
eT
(+,B)
0.67
1.00
1.50
I
CCL
Supply Current
Both Outputs Low
(Both Photodiodes Irradiated)
8.5
12.0
mA
E
e
= 0.5 mW/cm
2
, No Load on Output
I
CCH
Supply Current
Both Outputs High
(Both Photodiodes Shaded)
3.5
6.0
mA
E
e
= 0 mW/cm
2
, No Load on Output
I
CCM
Supply Current
Mixed Output States (One High, One Low)
6
mA
E
e
= 0 mW/cm
2
and 0.5 mW/cm
2
I
OH
High Level Output Current
1.0
30.0
A
E
e
= 0 mW/cm
2
, V
OH
= 16 V
V
OL
Low Level Output Voltage
0.21
0.40
V
E
e
= 0.5 mW/cm
2
, I
OL
= 12.8 mA
T
PHL
T
PLH
Propagation Delay
Output High to Low
Output Low to High
2
10
s
s
Vcc = 5 V, R
L
= 360
E
e
= 0 or 0.5 mW/cm
2
, f = 10 kHz,
D.C. = 50%
t
r
t
f
Output Rise Time
Output Fall Time
20
15
ns
ns
Typi cal Per form ance Curves
Angular Displacement from
Package Mechanical Axis
Angular Response (Typ) - 0
o
Normalized Threshold Irradiance
vs. Ambient Temperature
T
A
- Ambient Temperature -
o
C
Supply Current vs. Ambient
Temperature
T
A
- Ambient Temperature -
o
C
Based on I
L
vs.
Angular Displacement
readings from 5
photodiode-bonded
samples
V
CC
= 5 V
= 940 nm
E
e
T(-)
E
e
T(+)
V
CC
= 16 V
No Load On Output
= 940 nm
E
e
= 0.5 mW/cm
2
for I
CCL
E
e
= 0.0 mW/cm
2
for I
CCH
I
CCL
I
CCH
Op tek re serves the right to make changes at any time in or der to im prove de sign and to sup ply the best prod uct pos si ble.
Op tek Tech nol ogy, Inc. 1215 W. Crosby Road Car roll ton, Texas 75006 (972)323- 2200 Fax (972)323- 2396
4-17
Type OPL583
Typi cal Per form ance Curves
High Level Output Current vs.
Ambient Temperature
T
A
- Ambient Temperature -
o
C
Low Level Output Voltage vs.
Ambient Temperature
T
A
- Ambient Temperature -
o
C
Rise, Fall Time vs. Ambient
Temperature vs. Output Load
T
A
- Ambient Temperature -
o
C
T
A
- Ambient Temperature -
o
C
Propagation Delay vs. Ambient
Temperature
Typi cal Ap pli ca tion
V
CC
= 4.5 V
V
OH
= 18 V
E
e
= 0 mW/cm
2
I
OH
V
CC
= 4.5 V
I
OL
= 12.8 mA
= 940 nm
V
OL
V
CC
= 5 V
= 940 nm
f = 10 kHz
t
f
, R
L
= 360
, 1 k
, 2 k
Amplitude = 0.5 mW/cm
2
t
r
, R
L
= 1 k
t
r
, R
L
= 360
t
r
, R
L
= 2 k
V
CC
= 5 V
R
L
= 360
= 940 nm
f = 10 KHz
Duty Cycle = 50%
t
PHL
t
PLH
Amplitude = 0.5 mW/cm
2
Op tek Tech nol ogy, Inc. 1215 W. Crosby Road Car roll ton, Texas 75006 (972) 323- 2200 Fax (972) 323- 2396
4-18
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