ETC TIL300A

TIL300, TIL300A
PRECISION LINEAR OPTOCOUPLER
TAOS018 – AUGUST 1999
DCS OR P PACKAGE
(TOP VIEW)
ac or dc Signal Coupling
Wide Bandwidth . . . >200 kHz
High Transfer-Gain Stability . . . ±0.005%/°C
3500 V Peak Isolation
Typical Applications
– Power-Supply Feedback
– Medical-Sensor Isolation
– Opto Direct-Access Arrangement (DAA)
– Isolated Process-Control Transducers
LEDK
LEDA
PDK1
PDA1
1
8
2
7
3
6
4
5
NC
NC
PDK2
PDA2
NC – No internal connection
Description
The TIL300 precision linear optocoupler consists of an infrared LED irradiating an isolated feedback photodiode
and an output photodiode in a bifurcated arrangement. The feedback photodiode captures a percentage of the
flux of the LED that can be used to generate a control signal to regulate the LED drive current. This technique
is used to compensate for the nonlinear time and temperature characteristics of the LED. The output-side
photodiode then produces an output signal that is linearly proportional to the servo-optical flux emitted from the
LED.
A typical application circuit (shown in Figure 1) uses an operational amplifier as the input to drive the LED. The
feedback photodiode sources current through R1, which is connected to the inverting input of the input
operational amplifier. The photocurrent IP1 assumes a magnitude that satisfies the relationship IP1 = VI/R1. The
magnitude of the current is directly proportional to the LED current through the feedback transfer gain
K1(VI/R1 = K1 × IF). The operational amplifier supplies LED current to produce sufficient photocurrent to keep
the node voltage Vb equal to node voltage Va.
TIL300
1
1VCC+
Va
Vb
+
VI
–
P
R3
+
_
IF
K2
K1
1VCC+
1VCC–
3
6
4
5
2VCC+
2VCC+
–
R1
P
2
IP2
IP1
+
R2
VO = K3(R2/R1) VI
2VCC–
NOTES: A. K1 is servo current gain, the ratio of the feedback servo photodiode current (IP1) to the input LED current (IF), i.e. K1 = IP1/IF.
B. K2 is forward gain, the ratio of the output photodiode current (IP2) to the input LED current (IF), i.e. K2 = IP2/IF.
C. K3 is transfer gain, the ratio of the forward gain to the servo gain, i.e. K3 = K2/K1.
Figure 1. Typical Application Circuit
The output photodiode is connected to a noninverting voltage follower; R2 is used to develop a voltage from
the photodiode current. The output of the amplifier is VO = K2IFR2. Overall transfer gain VO/VI becomes
VO/VI = (K2IFR2/K1IFR1). Factoring out the LED forward current IF and remembering that K2/K1 = K3, the
overall transfer gain becomes VO/VI = K3R2/R1. The overall transfer gain, therefore, is shown to be
independent of the LED current.
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Copyright  2000, TAOS Inc.
Texas Advanced Optoelectronic Solutions Inc.
800 Jupiter Road, Suite 205 Plano, TX 75074 (972) 673-0759
1
TIL300, TIL300A
PRECISION LINEAR OPTOCOUPLER
TAOS018 – AUGUST 1999
Terminal Functions
TERMINAL
NAME
NO.
DESCRIPTION
LEDK
1
LED cathode
LEDA
2
LED anode
PDK1
3
Photodiode 1 cathode
PDA1
4
Photodiode 1 anode
PDA2
5
Photodiode 2 anode
PDK2
6
Photodiode 2 cathode
NC
7
No internal connection
NC
8
No internal connection
Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)†
Emitter
Continuous total power dissipation (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160 mW
Input LED forward current, IF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 mA
Surge current with pulse duration < 10 µs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 mA
Reverse voltage, VR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 V
Reverse current, IR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 µA
Detector
Continuous total power dissipation (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mW
Reverse voltage, VR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V
Coupler
Continuous total power dissipation (see Note 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210 mW
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 150°C
Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 100°C
Input-to-output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3535 Vpeak
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may
affect device reliability.
NOTES: 1. Derate linearly from 25°C at a rate of 2.66 mW/°C.
2. Derate linearly from 25°C at a rate of 0.66 mW/°C.
3. Derate linearly from 25°C at a rate of 3.33 mW/°C.
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TIL300, TIL300A
PRECISION LINEAR OPTOCOUPLER
TAOS018 – AUGUST 1999
Electrical Characteristics at TA = 25°C (unless otherwise noted)
Emitter
PARAMETER
TEST CONDITIONS
MIN
IF = 10 mA
TYP
MAX
1.25
1.50
UNIT
VF
LED forward voltage
IR
Temperature coefficient of VF
Reverse current
VR = 5 V
tr
Rise time
IF = 10 mA,
∆IF = 2 mA
tf
Fall time
IF = 10 mA,
∆IF = 2 mA
1
µs
Cj
Junction capacitance
VF = 0,
f = 1 MHz
15
pF
–2.2
V
mV/°C
10
µA
µs
1
Detector
PARAMETER
IDK†
TEST CONDITIONS
Dark current
VR = -15 V,
Open-circuit voltage
IF = 10 mA
IOS
Short-circuit current limit
IF = 10 mA
Cj
Junction capacitance
VF = 0,
MIN
TYP
IF = 0
MAX
25
f = 1 MHz
UNIT
nA
0.5
V
80
µA
12
pF
Coupler, detector bias voltage, VR = –15 V
PARAMETER
K1†
K2‡
TEST CONDITIONS
Servo current gain
Servo-current
Forward current gain
TIL300
K3§
Transfer gain
TIL300A
MIN
∆K3¶
Transfer gain linearity
K3
MAX
1.5%
IF = 1 mA
0.3%
0.7%
IF = 10 mA
0.5%
1.25%
2%
IF = 1 mA
0.3%
0.7%
1.5%
IF = 10 mA
0.5%
1.25%
2%
IF = 1 mA
0.75
1
1.25
IF = 10 mA
0.75
1
1.25
IF = 1 mA
0.9
1
1.10
IF = 10 mA
0.9
1
1.10
K1/K2
Gain temperature coefficient
TYP
UNIT
–0.5
IF = 10 mA
±0.005
%/°C
±0.25%
IF = 1 to 10 mA
±0.5%
IF = 1 to 10 mA,
TA = 0 to 75°C
RL = 1 kΩ,
200
kHz
BW
Bandwidth
IF = 10 mA,
IF(MODULATION) = ±2 mA
tr
Rise time
IF = 10 mA,
IF(MODULATION) = ±2 mA
RL = 1 kΩ,
1.75
µs
tf
Fall time
IF = 10 mA,
IF(MODULATION) = ±2 mA
RL = 1 kΩ,
1.75
µs
Viso#
Peak isolation voltage
IIO = 10 µA,
time = 1 minute
f = 60 Hz,
3535
V
†
Servo-current gain (K1) is the ratio of the feedback photodiode current (IP1) to the input LED current (IF) current (IF), i.e. K1 = IP1/IF.
Forward gain (K2 is the ratio of the output photodiode current (IP2) to the input LED current (IF), i.e. K2 = IP2/IF.
§ Transfer gain (K3) is the ratio of the forward gain to the servo-current gain, i.e. K3 = K2/K1.
¶ Transfer gain linearity (∆K3) is the percent deviation of the transfer gain K3 as a function of LED input current (I ) or the package temperature.
F
# This symbol is not currently listed within EIA or JEDEC standards for semiconductor symbology.
‡
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3
TIL300, TIL300A
PRECISION LINEAR OPTOCOUPLER
TAOS018 – AUGUST 1999
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
IF
LED Forward Current
vs LED Forward Voltage
2
vs LED Forward Voltage
3
vs LED Forward Current and Temperature
4
vs LED Forward Current and Temperature
5
Ip1
Servo Photodiode Current
Ip1
Normalized Servo Photodiode Current
vs LED Forward Current and Temperature
K1
Normalized Servo Current Gain
vs LED Forward Current and Temperature
8
K3
Normalized Transfer Gain
vs LED Forward Current
9
AO
Output Current Amplitude
vs Frequency
6
10
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4
7
TIL300, TIL300A
PRECISION LINEAR OPTOCOUPLER
TAOS018 – AUGUST 1999
TYPICAL CHARACTERISTICS
LED FORWARD CURRENT
vs
LED FORWARD VOLTAGE
LED FORWARD CURRENT
vs
LED FORWARD VOLTAGE
30
100
TA = 25°C
25
I F – LED Forward Current – mA
I F – LED Forward Current – mA
TA = 25°C
20
15
10
10
1
5
0
1
1.1
1.4
1.5
1.2
1.3
VF – LED Forward Voltage – V
0.1
1.6
1
1.1
1.5
1.2
1.3
1.4
VF – LED Forward Voltage – V
Figure 2
Figure 3
SERVO PHOTODIODE CURRENT
vs
LED FORWARD CURRENT AND TEMPERATURE
SERVO PHOTODIODE CURRENT
vs
LED FORWARD CURRENT AND TEMPERATURE
1000
700
450
TA = 0°C
400
I p1 – Servo Photodiode Current – µ A
I p1 – Servo Photodiode Current – µ A
500
350
TA = 25°C
TA = 50°C
TA = 75°C
300
250
200
150
100
50
0
0.1
400
TA = 0°C
TA = 25°C
200
TA = 50°C
100
70
TA = 75°C
40
20
10
7
4
2
1
10
IF – LED Forward Current – mA
100
1
0.1 0.2
0.4 0.7 1
2
4
7 10
20
40 70 1000
IF – LED Forward Current – mA
Figure 4
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1.6
Figure 5
5
TIL300, TIL300A
PRECISION LINEAR OPTOCOUPLER
TAOS018 – AUGUST 1999
NORMALIZED SERVO PHOTODIODE CURRENT
vs
LED FORWARD CURRENT AND TEMPERATURE
NORMALIZED SERVO PHOTODIODE CURRENT
vs
LED FORWARD CURRENT AND TEMPERATURE
4
10
Normalized at
IF = 10 mA
TA = 25°C
VR = –15 V
3.5
3
I p1 – Normalized Servo Photodiode Current
I p1 – Normalized Servo Photodiode Current
TYPICAL CHARACTERISTICS
TA = 0°C
TA = 25°C
TA = 50°C
2.5
TA = 75°C
2
1.5
1
0.5
0
0
5
25
10
15
20
IF – LED Forward Current – mA
Normalized at
IF = 10 mA
TA = 25°C
VR = –15 V
TA = 75°C
0.1
10
1
IF – LED Forward Current – mA
Figure 6
1.3
Normalized at
TA = 0°C
IF = 10 mA
TA = 25°C
TA = 25°C
TA = 50°C
1
TA = 75°C
0.8
0.6
0.4
0.2
0
0.1
NORMALIZED TRANSFER GAIN
vs
LED FORWARD CURRENT
K3 – Normalized Transfer Gain – (K2/K1)
K1 – Normalized Servo Current Gain
1.2
Normalized at
IF = 10 mA
TA = 25°C
VR = –15 V
1.2
1.1
1
0.9
0.8
0.7
1
10
IF – LED Forward Current – mA
100
0
5
10
15
20
IF – LED Forward Current
Figure 8
25
30
Figure 9
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6
100
Figure 7
NORMALIZED SERVO CURRENT GAIN
vs
LED FORWARD CURRENT AND TEMPERATURE
1.4
TA = 25°C
TA = 50°C
1
0.01
0.1
30
TA = 0°C
TIL300, TIL300A
PRECISION LINEAR OPTOCOUPLER
TAOS018 – AUGUST 1999
TYPICAL CHARACTERISTICS
OUTPUT CURRENT AMPLITUDE
vs
FREQUENCY
IF = 10 mA
MOD = ±2 mA (peak)
VR = 15 V
A O – Output Current Amplitude – dB
5
0
RL = 1 kΩ
–5
RL = 10 kΩ
–10
–15
–20
–25
10
20
40
70 100
200
400
700 1000
f – Frequency – kHz
Figure 10
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7
TIL300, TIL300A
PRECISION LINEAR OPTOCOUPLER
TAOS018 – AUGUST 1999
MECHANICAL DATA
DCS (R-PDSO-G8)
PLASTIC DUAL SMALL-OUTLINE OPTO COUPLER
0.023 (0,58)
0.013 (0,33)
0.092 (2,34) TYP
0.045 (1,14)
0.035 (0,89)
0.055 (1,40)
0.045 (1,14)
8
5
0.405 (10,29)
0.385 (9,78)
0.008 (0,20) NOM
0.260 (6,60)
0.240 (6,10)
1
Gage Plane
4
0.055 (1,40)
0.035 (0,89)
0.100 (2,54)
0.390 (9,91)
0.370 (9,40)
0°–5°
0.010 (0,25)
0.030 (0,76) MIN
0.150 (3,81) MAX
Seating Plane
0.020 (0,51) MAX
0.004 (0,10)
4073327/B 01/98
NOTES: A. All linear dimensions are in inches(millimeters).
B. This drawing is subject to change without notice.
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8
TIL300, TIL300A
PRECISION LINEAR OPTOCOUPLER
TAOS018 – AUGUST 1999
MECHANICAL DATA
P (R-PDIP-T8)
PLASTIC DUAL-IN-LINE PACKAGE
0.400 (10,60)
0.355 (9,02)
8
5
0.260 (6,60)
0.240 (6,10)
1
4
0.070 (1,78) MAX
0.310 (7,87)
0.290 (7,37)
0.020 (0,51) MIN
0.200 (5,08) MAX
Seating Plane
0.125 (3,18) MIN
0.100 (2,54)
0.021 (0,53)
0.015 (0,38)
0°–15°
0.010 (0,25) M
0.010 (0,25) NOM
4040082/B 03/95
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-001
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TIL300, TIL300A
PRECISION LINEAR OPTOCOUPLER
TAOS018 – AUGUST 1999
PRODUCTION DATA — information in this document is current at publication date. Products conform to
specifications in accordance with the terms of Texas Advanced Optoelectronic Solutions, Inc. standard
warranty. Production processing does not necessarily include testing of all parameters.
NOTICE
Texas Advanced Optoelectronic Solutions, Inc. (TAOS) reserves the right to make changes to the products contained in this
document to improve performance or for any other purpose, or to discontinue them without notice. Customers are advised
to contact TAOS to obtain the latest product information before placing orders or designing TAOS products into systems.
TAOS assumes no responsibility for the use of any products or circuits described in this document or customer product
design, conveys no license, either expressed or implied, under any patent or other right, and makes no representation that
the circuits are free of patent infringement. TAOS further makes no claim as to the suitability of its products for any particular
purpose, nor does TAOS assume any liability arising out of the use of any product or circuit, and specifically disclaims any
and all liability, including without limitation consequential or incidental damages.
TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS, INC. PRODUCTS ARE NOT DESIGNED OR INTENDED FOR
USE IN CRITICAL APPLICATIONS IN WHICH THE FAILURE OR MALFUNCTION OF THE TAOS PRODUCT MAY
RESULT IN PERSONAL INJURY OR DEATH. USE OF TAOS PRODUCTS IN LIFE SUPPORT SYSTEMS IS EXPRESSLY
UNAUTHORIZED AND ANY SUCH USE BY A CUSTOMER IS COMPLETELY AT THE CUSTOMER’S RISK.
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