IL300-EF-X001 [VISHAY]
Optoelectronic Device, ROHS COMPLIANT, SMD, 8 PIN;
| 型号： | IL300-EF-X001 |
| 厂家： | 
VISHAY |
| 描述： | Optoelectronic Device, ROHS COMPLIANT, SMD, 8 PIN 光电 |
| 文件： | 总11页 (文件大小：187K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IL300
Vishay Semiconductors
www.vishay.com
Linear Optocoupler, High Gain Stability, Wide Bandwidth
FEATURES
• Couples AC and DC signals
8
7
6
5
C
A
C
1
2
3
4
NC
NC
C
• 0.01 % servo linearity
K2
K1
• Wide bandwidth, > 200 kHz
• High gain stability, 0.005 %/°C typically
• Low input-output capacitance
• Low power consumption, < 15 mW
• Isolation test voltage, 5300 VRMS, 1 s
• Internal insulation distance, > 0.4 mm
A
A
i179026_2
V
D
E
i179026
• Compliant to RoHS Directive 2002/95/EC and in
accordance to WEEE 2002/96/EC
DESCRIPTION
The IL300 linear optocoupler consists of an AlGaAs IRLED
irradiating an isolated feedback and an output PIN
photodiode in a bifurcated arrangement. The feedback
photodiode captures a percentage of the LEDs flux and
generates a control signal (IP1) that can be used to servo the
LED drive current. This technique compensates for the
LED’s non-linear, time, and temperature characteristics.
APPLICATIONS
• Power supply feedback voltage/current
• Medical sensor isolation
• Audio signal interfacing
• Isolated process control transducers
• Digital telephone isolation
The output PIN photodiode produces an output signal (IP2
)
that is linearly related to the servo optical flux created by the
LED.
AGENCY APPROVALS
• UL file no. E52744, system code H
• DIN EN 60747-5-2 (VDE 0884)
• DIN EN 60747-5-5 (pending) available with option 1
• BSI
The time and temperature stability of the input-output
coupler gain (K3) is insured by using matched PIN
photodiodes that accurately track the output flux of the LED.
• FIMKO
ORDERING INFORMATION
Option 6
DIP-8
I
L
3
0
0
-
D
E
F
G
-
X
0
#
#
T
10.16 mm
Option 9
7.62 mm
Option 7
PART NUMBER
K3 BIN
PACKAGE OPTION
TAPE
AND
REEL
> 0.1 mm
> 0.7 mm
AGENCY
CERTIFIED/
PACKAGE
K3 BIN
UL, cUL, BSI,
FIMKO
0.557 to 1.618
IL300
0.765 to 1.181
IL300-DEFG
0.851 to 1.181 0.765 to 0.955
0.851 to 1.061 0.945 to 1.181 0.851 to 0.955 0.945 to 1.061
IL300-EF IL300-E IL300-F
IL300-EF-X006 IL300-FG-X006 IL300-E-X006 IL300-F-X006
DIP-8
-
-
-
-
-
DIP-8, 400 mil,
option 6
IL300-X006
IL300-DEFG-X006
SMD-8, option 7 IL300-X007T(1) IL300-DEFG-X007T(1) IL300-EFG-X007 IL300-DE-X007T IL300-EF-X007T(1)
SMD-8, option 9 IL300-X009T(1) IL300-DEFG-X009T(1) IL300-EF-X009T(1)
-
-
IL300-E-X007T IL300-F-X007
IL300-F-X009T(1)
-
-
-
VDE, UL
0.557 to 1.618
0.765 to 1.181
0.851 to 1.181 0.765 to 0.955
0.851 to 1.061 0.945 to 1.181 0.851 to 0.955 0.945 to 1.061
DIP-8
IL300-X001
IL300-DEFG-X001
-
-
IL300-EF-X001
-
IL300-E-X001 IL300-F-X001
IL300-F-X016
IL300-E-X017T IL300-F-X017T(1)
IL300-F-X019T(1)
DIP-8, 400 mil,
option 6
SMD-8, option 7 IL300-X017 IL300-DEFG-X017T(1)
SMD-8, option 9
Note
IL300-X016
IL300-DEFG-X016
-
-
IL300-EF-X016
-
-
-
-
-
-
IL300-EF-X017T(1)
-
-
-
-
-
-
(1)
Also available in tubes, do not put “T” on the end.
Rev. 1.7, 23-Sep-11
Document Number: 83622
1
For technical questions, contact: optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
IL300
Vishay Semiconductors
www.vishay.com
OPERATION DESCRIPTION
ΔK3-TRANSFER FAIN LINEARITY
A typical application circuit (figure 1) uses an operational
amplifier at the circuit input to drive the LED. The feedback
photodiode sources current to R1 connected to the inverting
input of U1. The photocurrent, IP1, will be of a magnitude to
satisfy the relationship of (IP1 = VIN/R1).
The percent deviation of the transfer gain, as a function of
LED or temperature from a specific transfer gain at a fixed
LED current and temperature.
PHOTODIODE
The magnitude of this current is directly proportional to the
feedback transfer gain (K1) times the LED drive current
(VIN/R1 = K1 x IF). The op-amp will supply LED current to
force sufficient photocurrent to keep the node voltage (Vb)
equal to Va.
A silicon diode operating as a current source. The output
current is proportional to the incident optical flux supplied
by the LED emitter. The diode is operated in the photovoltaic
or photoconductive mode. In the photovoltaic mode the
diode functions as a current source in parallel with a forward
biased silicon diode.
The output photodiode is connected to a non-inverting
voltage follower amplifier. The photodiode load resistor, R2,
performs the current to voltage conversion. The output
amplifier voltage is the product of the output forward gain
(K2) times the LED current and photodiode load,
R2 (VO = IF x K2 x R2).
The magnitude of the output current and voltage is
dependent upon the load resistor and the incident LED
optical flux. When operated in the photoconductive mode
the diode is connected to a bias supply which reverse
biases the silicon diode. The magnitude of the output
current is directly proportional to the LED incident optical
flux.
Therefore, the overall transfer gain (VO/VIN) becomes the
ratio of the product of the output forward gain (K2) times the
photodiode load resistor (R2) to the product of the feedback
transfer gain (K1) times the input resistor (R1). This reduces
to
LED (LIGHT EMITTING DIODE)
An infrared emitter constructed of AlGaAs that emits at
890 nm operates efficiently with drive current from 500 μA to
40 mA. Best linearity can be obtained at drive currents
between 5 mA to 20 mA. Its output flux typically changes by
- 0.5 %/°C over the above operational current range.
VO/VIN = (K2 x R2)/(K1 x R1).
The overall transfer gain is completely independent of the
LED forward current. The IL300 transfer gain (K3) is
expressed as the ratio of the output gain (K2) to the
feedback gain (K1). This shows that the circuit gain
becomes the product of the IL300 transfer gain times the
ratio of the output to input resistors
APPLICATION CIRCUIT
VO/VIN = K3 (R2/R1).
V
CC
IL300
K2
8
7
6
1
2
3
Va
Vb
+
+
K1-SERVO GAIN
U1
Vin
The ratio of the input photodiode current (IP1) to the LED
current (IF) i.e., K1 = IP1/IF.
V
CC
K1
-
I
F
-
V
V
CC
CC
V
U2
out
K2-FORWARD GAIN
V
c
+
5
4
lp1
The ratio of the output photodiode current (IP2) to the LED
current (IF), i.e., K2 = IP2/IF.
R2
lp2
R1
K3-TRANSFER GAIN
iil300_01
The transfer gain is the ratio of the forward gain to the servo
gain, i.e., K3 = K2/K1.
Fig. 1 - Typical Application Circuit
Rev. 1.7, 23-Sep-11
Document Number: 83622
2
For technical questions, contact: optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
IL300
Vishay Semiconductors
www.vishay.com
ABSOLUTE MAXIMUM RATINGS (Tamb = 25 °C, unless otherwise specified)
PARAMETER
TEST CONDITION
SYMBOL
VALUE
UNIT
INPUT
Power dissipation
Pdiss
160
2.13
60
mW
mW/°C
mA
Derate linearly from 25 °C
Forward current
IF
IPK
VR
Rth
Tj
Surge current (pulse width < 10 μs)
Reverse voltage
250
5
mA
V
Thermal resistance
Junction temperature
OUTPUT
470
100
K/W
°C
Power dissipation
Pdiss
50
0.65
50
mW
mW/°C
V
Derate linearly from 25 °C
Reverse voltage
VR
Rth
Tj
Thermal resistance
Junction temperature
COUPLER
1500
100
K/W
°C
Total package dissipation at 25 °C
Derate linearly from 25 °C
Storage temperature
Operating temperature
Isolation test voltage
Ptot
210
2.8
mW
mW/°C
°C
Tstg
Tamb
VISO
RIO
- 55 to + 150
- 55 to + 100
> 5300
°C
VRMS
Ω
V
IO = 500 V, Tamb = 25 °C
> 1012
> 1011
Isolation resistance
VIO = 500 V, Tamb = 100 °C
RIO
Ω
Note
•
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. Functional operation of the device is not
implied at these or any other conditions in excess of those given in the operational sections of this document. Exposure to absolute
maximum ratings for extended periods of the time can adversely affect reliability.
ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
PARAMETER
TEST CONDITION
SYMBOL
MIN.
TYP.
MAX.
UNIT
INPUT (LED EMITTER)
Forward voltage
IF = 10 mA
VF
ΔVF/Δ°C
IR
1.25
- 2.2
1
1.50
V
mV/°C
μA
VF temperature coefficient
Reverse current
V
R = 5 V
Junction capacitance
Dynamic resistance
OUTPUT
VF = 0 V, f = 1 MHz
IF = 10 mA
Cj
15
pF
ΔVF/ΔIF
6
Ω
Dark current
V
det = - 15 V, IF = 0 A
IF = 10 mA
ID
VD
1
500
25
nA
mV
Open circuit voltage
Short circuit current
Junction capacitance
Noise equivalent power
COUPLER
IF = 10 mA
ISC
Cj
70
μA
VF = 0 V, f = 1 MHz
12
4 x 10-14
pF
Vdet = 15 V
NEP
W/√Hz
Input-output capacitance
K1, servo gain (IP1/IF)
Servo current (1)(2)
K2, forward gain (IP2/IF)
Forward current
VF = 0 V, f = 1 MHz
IF = 10 mA, Vdet = - 15 V
IF = 10 mA, Vdet = - 15 V
IF = 10 mA, Vdet = - 15 V
IF = 10 mA, Vdet = - 15 V
IF = 10 mA, Vdet = - 15 V
1
0.007
70
pF
μA
K1
IP1
K2
IP2
K3
0.0050
0.0036
0.56
0.011
0.011
1.65
0.007
70
μA
K3, transfer gain (K2/K1) (1)(2)
1
K2/K1
Rev. 1.7, 23-Sep-11
Document Number: 83622
3
For technical questions, contact: optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
IL300
Vishay Semiconductors
www.vishay.com
ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
PARAMETER
TEST CONDITION
SYMBOL
MIN.
TYP.
MAX.
UNIT
COUPLER
Transfer gain stability
IF = 10 mA, Vdet = - 15 V
IF = 1 mA to 10 mA
ΔK3/ΔTA
ΔK3
0.005
0.25
0.05
%/°C
%
Transfer gain linearity
IF = 1 mA to 10 mA,
0.5
%
Tamb = 0 °C to 75 °C
PHOTOCONDUCTIVE OPERATION
Frequency response
IFq = 10 mA, MOD = 4 mA,
BW (- 3 db)
200
- 45
kHz
RL = 50 Ω
Phase response at 200 kHz
Vdet = - 15 V
Deg.
Notes
•
Minimum and maximum values were tested requierements. Typical values are characteristics of the device and are the result of engineering
evaluation. Typical values are for information only and are not part of the testing requirements.
Bin sorting:
(1)
K3 (transfer gain) is sorted into bins that are 6 % , as follows:
Bin A = 0.557 to 0.626
Bin B = 0.620 to 0.696
Bin C = 0.690 to 0.773
Bin D = 0.765 to 0.859
Bin E = 0.851 to 0.955
Bin F = 0.945 to 1.061
Bin G = 1.051 to 1.181
Bin H = 1.169 to 1.311
Bin I = 1.297 to 1.456
Bin J = 1.442 to 1.618
K3 = K2/K1. K3 is tested at IF = 10 mA, Vdet = - 15 V.
Bin categories: All IL300s are sorted into a K3 bin, indicated by an alpha character that is marked on the part. The bins range from “A”
through “J”.
The IL300 is shipped in tubes of 50 each. Each tube contains only one category of K3. The category of the parts in the tube is marked on
the tube label as well as on each individual part.
Category options: standard IL300 orders will be shipped from the categories that are available at the time of the order. Any of the ten
categories may be shipped. For customers requiring a narrower selection of bins, the bins can be grouped together as follows:
IL300-DEFG: order this part number to receive categories D, E, F, G only.
IL300-EF: order this part number to receive categories E, F only.
(2)
(3)
IL300-E: order this part number to receive category E only.
SWITCHING CHARACTERISTICS
PARAMETER
TEST CONDITION
SYMBOL
MIN.
TYP.
1
MAX.
UNIT
μs
tr
tf
tr
tf
Switching time
ΔIF = 2 mA, IFq = 10 mA
1
μs
Rise time
Fall time
1.75
1.75
μs
μs
COMMON MODE TRANSIENT IMMUNITY
PARAMETER
TEST CONDITION
SYMBOL
CCM
MIN.
TYP.
0.5
MAX.
UNIT
pF
Common mode capacitance
Common mode rejection ratio
VF = 0 V, f = 1 MHz
f = 60 Hz, RL = 2.2 kΩ
CMRR
130
dB
Rev. 1.7, 23-Sep-11
Document Number: 83622
4
For technical questions, contact: optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
IL300
Vishay Semiconductors
www.vishay.com
TYPICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
0.010
0.008
0.006
0.004
0.002
0
35
30
25
20
15
10
0°
25°
50°
75°
100°
5
0
1.0
1.1
1.2
1.3
1.4
0.1
1
10
100
iil300_02
VF - LED Forward Voltage (V)
17754
IF - LED Current (mA)
Fig. 2 - LED Forward Current vs. Forward Voltage
Fig. 5 - Servo Gain vs. LED Current and Temperature
300
1.010
VD = - 15 V
0 °C
Normalized to:
IF = 10 mA
0 °C
250
25 °C
1.005
TA = 25 °C
50 °C
200
25 °C
75 °C
150
100
50
1.000
0.995
0.990
50 °C
75 °C
0
0.1
1
10
100
0
5
10
15
20
25
IF - LED Current (mA)
IF - LED Current (mA)
iil300_04
iil300_11
Fig. 3 - Servo Photocurrent vs. LED Current and Temperature
Fig. 6 - Normalized Transfer Gain vs.
LED Current and Temperature
5
3.0
Normalized to: IP1 at
IF = 10 mA
IF = 10 mA, Mod = 2.0 Ma (peak)
2.5
2.0
1.5
1.0
0.5
0.0
TA = 25 °C
VD = - 15 V
0
0 °C
25 °C
50 °C
75 °C
RL = 1 kΩ
- 5
- 10
RL = 10 kΩ
- 15
- 20
104
105
F - Frequency (Hz)
106
0
5
10
15
20
25
iil300_06
IF - LED Current (mA)
iil300_12
Fig. 4 - Normalized Servo Photocurrent vs.
LED Current and Temperature
Fig. 7 - Amplitude Response vs. Frequency
Rev. 1.7, 23-Sep-11
Document Number: 83622
5
For technical questions, contact: optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
IL300
Vishay Semiconductors
www.vishay.com
APPLICATION CONSIDERATIONS
In applications such as monitoring the output voltage from a
line powered switch mode power supply, measuring
bioelectric signals, interfacing to industrial transducers, or
making floating current measurements, a galvanically
isolated, DC coupled interface is often essential. The IL300
can be used to construct an amplifier that will meet these
needs.
5
0
45
0
dB
Phase
- 5
- 45
- 90
- 135
- 180
The IL300 eliminates the problems of gain nonlinearity and
drift induced by time and temperature, by monitoring LED
output flux.
- 10
IFq = 10 mA
Mod = 4.0 mA
- 15
- 20
TA = 25 °C
A pin photodiode on the input side is optically coupled to the
LED and produces a current directly proportional to flux
falling on it. This photocurrent, when coupled to an amplifier,
provides the servo signal that controls the LED drive current.
RL = 50 Ω
103
104
105
106
107
iil300_13
F - Frequency (Hz)
The LED flux is also coupled to an output PIN photodiode.
The output photodiode current can be directly or amplified
to satisfy the needs of succeeding circuits.
Fig. 8 - Amplitude and Phase Response vs. Frequency
ISOLATED FEEDBACK AMPLIFIER
The IL300 was designed to be the central element of DC
coupled isolation amplifiers. Designing the IL300 into an
amplifier that provides a feedback control signal for a line
powered switch mode power is quite simple, as the
following example will illustrate.
- 60
- 70
- 80
- 90
See figure 12 for the basic structure of the switch mode
supply using the Infineon TDA4918 push-pull switched
power supply control cChip. Line isolation are provided by
the high frequency transformer. The voltage monitor
isolation will be provided by the IL300.
- 100
- 110
- 120
- 130
The isolated amplifier provides the PWM control signal
which is derived from the output supply voltage. Figure 13
more closely shows the basic function of the amplifier.
101
102
103
104
105
106
iil300_14
F - Frequency (Hz)
The control amplifier consists of a voltage divider and a
non-inverting unity gain stage. The TDA4918 data sheet
indicates that an input to the control amplifier is a high
quality operational amplifier that typically requires a + 3 V
signal. Given this information, the amplifier circuit topology
shown in figure 14 is selected.
Fig. 9 - Common-Mode Rejection
14
12
10
The power supply voltage is scaled by R1 and R2 so that
there is + 3 V at the non-inverting input (Va) of U1. This
voltage is offset by the voltage developed by photocurrent
flowing through R3. This photocurrent is developed by the
optical flux created by current flowing through the LED.
Thus as the scaled monitor voltage (Va) varies it will cause a
change in the LED current necessary to satisfy the
differential voltage needed across R3 at the inverting input.
The first step in the design procedure is to select the value
of R3 given the LED quiescent current (IFq) and the servo
gain (K1). For this design, IFq = 12 mA. Figure 4 shows the
servo photocurrent at IFq is found to be 100 mA. With this
data R3 can be calculated.
8
6
4
2
0
2
6
10
0
4
8
iil300_15
Voltage (Vdet)
Fig. 10 - Photodiode Junction Capacitance vs.
Reverse Voltage
Vb
------
IPI
3 V
100 μA
------------------
R3 =
=
= 30 kΩ
Rev. 1.7, 23-Sep-11
Document Number: 83622
6
For technical questions, contact: optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
IL300
Vishay Semiconductors
www.vishay.com
The value of R5 depends upon the IL300 Transfer Gain (K3).
K3 is targeted to be a unit gain device, however to minimize
the part to part Transfer Gain variation, Infineon offers K3
+
R1
ISO
To control
input
Voltage
monitor
AMP
+1
graded into
5 % bins. R5 can determined using the
following equation,
V
R2
R3 x (R1 + R2)
------------O---U---T--------- -----------------------------------------
R5 =
x
VMONITOR
R2 x K3
iil300_16
Fig. 11 - Isolated Control Amplifier
or if
a
unity gain amplifier is being designed
(VMONITOR = VOUT, R1 = 0), the equation simplifies to:
For best input offset compensation at U1, R2 will equal R3.
The value of R1 can easily be calculated from the following.
VMONITOR
R3
-------
R5 =
K3
- 1
------------------------
R1 = R2 x
Va
DC output
110/
220
main
AC/DC
rectifier
AC/DC
rectifier
Switch
Xformer
Control
Switch
mode
Isolated
regulator
TDA4918
feedback
iil300_17
Fig. 12 - Switching Mode Power Supply
R1
IL300
1
8
7
20 kΩ
7
3
+
R4
100 Ω
V
V
monitor
CC
6
Va
U1
2
3
4
LM201
K2
R2
30 kΩ
2
1
K1
Vb
-
8
V
V
6
5
CC
CC
4
100 pF
V
To
out
control
input
R3
30 kΩ
R5
30 kΩ
iil300_18
Fig. 13 - DC Coupled Power Supply Feedback Amplifier
Rev. 1.7, 23-Sep-11
Document Number: 83622
7
For technical questions, contact: optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
IL300
Vishay Semiconductors
www.vishay.com
Table 1. Gives the value of R5 given the production K3 bin.
TABLE 1 - R5 SELECTION
K3
R5 RESISTOR
BIN
MIN.
MAX.
0.623
0.693
0.769
0.855
0.950
1.056
1.175
1.304
1.449
1.610
TYP.
1 % kΩ
51.1
45.3
41.2
37.4
32.4
30
A
B
C
D
E
F
G
H
I
0.560
0.623
0.693
0.769
0.855
0.950
1.056
1.175
1.304
1.449
0.59
0.66
0.73
0.81
0.93
1
1.11
1.24
1.37
1.53
27
24
22
J
19.4
The last step in the design is selecting the LED current
limiting resistor (R4). The output of the operational amplifier
is targeted to be 50 % of the VCC, or 2.5 V. With an LED
quiescent current of 12 mA the typical LED (VF) is 1.3 V.
Given this and the operational output voltage, R4 can be
calculated.
3.75
3.50
Vout = 14.4 mV + 0.6036 x Vin
LM 201 Ta = 25 °C
3.25
3.00
2.75
2.50
Vopamp - VF
--------------------------------
IFq
2.5 V - 1.3 V
---------------------------------
= 100 Ω
R4 =
=
12 mA
The circuit was constructed with an LM201 differential
operational amplifier using the resistors selected. The
amplifier was compensated with a 100 pF capacitor
connected between pins 1 and 8.
2.25
4.0
4.5
5.0
5.5
6.0
iil300_19
The DC transfer characteristics are shown in figure 17. The
amplifier was designed to have a gain of 0.6 and was
measured to be 0.6036. Greater accuracy can be achieved
by adding a balancing circuit, and potentiometer in the input
divider, or at R5. The circuit shows exceptionally good gain
linearity with an RMS error of only 0.0133 % over the input
voltage range of 4 V to 6 V in a servo mode; see figure 15.
Fig. 14 - Transfer Gain
0.025
0.020
LM201
0.015
0.010
0.005
0.000
- 0.005
- 0.010
- 0.015
4.0
4.5
5.0
5.5
6.0
iil300_20
Vin - Input Voltage (V)
Fig. 15 - Linearity Error vs. Input Voltage
The AC characteristics are also quite impressive offering a
- 3 dB bandwidth of 100 kHz, with a - 45° phase shift at
80 kHz as shown in figure 16.
Rev. 1.7, 23-Sep-11
Document Number: 83622
8
For technical questions, contact: optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
IL300
Vishay Semiconductors
www.vishay.com
The same procedure can be used to design isolation
amplifiers that accept bipolar signals referenced to ground.
These amplifiers circuit configurations are shown in
figure 17. In order for the amplifier to respond to a signal that
swings above and below ground, the LED must be pre
biased from a separate source by using a voltage reference
source (Vref1). In these designs, R3 can be determined by the
following equation.
2
0
45
0
dB
Phase
- 2
- 4
- 6
- 8
- 45
- 90
- 135
- 180
Vref1
-----------
IP1
Vref1
--------------
K1IFq
R3 =
=
103
104
105
106
iil300_21
F - Frequency (Hz)
Fig. 16 - Amplitude and Phase Power Supply Control
Non-inverting input
Non-inverting output
+ V
R5
ref2
- V
cc
V
7
in
IL 300
3
+
–
1
2
3
4
8
7
6
5
Vcc
R6
100 Ω
6
2
–
7
R1
R2
2
Vcc
6
V
cc
- V
cc
+V
cc
Vo
4
20 pF
3
+
- V
cc
4
R3
R4
- V
ref1
Inverting output
Inverting input
V
7
in
3
+
–
V
cc
+ V
100 Ω
ref2
6
IL 300
R1
1
2
3
4
8
7
6
5
R2
2
+ V
cc
V
7
3
+
cc
V
cc
4
6
Vcc
20 pF
V
out
2
–
- V
cc
4
R3
- V
cc
+ V
ref1
R4
iil300_22
Fig. 17 - Non-inverting and Inverting Amplifiers
TABLE 2 - OPTOLINEAR AMPLIEFIERS
AMPLIFIER
INPUT
OUTPUT
GAIN
OFFSET
VOUT
-------------
VIN
Vref1 x R4 x K3
-----------------------------------------
R3
K3 x R4 x R2
R3 x (R1 x R2)
------------------------------------------
=
Vref2
=
Inverting
Inverting
Non-inverting
VOUT
-------------
VIN
- Vref1 x R4 x (R5 + R6) x K3
---------------------------------------------------------------------------------
R3 x R6
K3 x R4 x R2 x (R5 + R6)
-------------------------------------------------------------------------
=
Non-inverting Non-inverting
Vref2
=
R3 x R5 x (R1 x R2)
VOUT
-------------
VIN
Vref1 x R4 x (R5 + R6) x K3
-----------------------------------------------------------------------------
R3 x R6
- K3 x R4 x R2 x (R5 + R6)
-----------------------------------------------------------------------------
=
Vref2
=
Inverting
Non-inverting
Inverting
R3 x (R1 x R2)
Inverting
VOUT
-------------
VIN
- Vref1 x R4 x K3
- K3 x R4 x R2
R3 x (R1 x R2)
------------------------------------------
=
---------------------------------------------
=
Vref2
Non-inverting
R3
Rev. 1.7, 23-Sep-11
Document Number: 83622
9
For technical questions, contact: optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
IL300
Vishay Semiconductors
www.vishay.com
These amplifiers provide either an inverting or non-inverting
transfer gain based upon the type of input and output
amplifier. Table 2 shows the various configurations along
with the specific transfer gain equations. The offset column
refers to the calculation of the output offset or Vref2
necessary to provide a zero voltage output for a zero voltage
input. The non-inverting input amplifier requires the use of a
bipolar supply, while the inverting input stage can be
implemented with single supply operational amplifiers that
permit operation close to ground.
For best results, place a buffer transistor between the LED
and output of the operational amplifier when a CMOS
opamp is used or the LED IFq drive is targeted to operate
beyond 15 mA. Finally the bandwidth is influenced by the
magnitude of the closed loop gain of the input and output
amplifiers. Best bandwidths result when the amplifier gain is
designed for unity.
PACKAGE DIMENSIONS in millimeters
Pin one ID
3.302
3.810
0.527
0.889
6.096
6.604
2.540
1
2
3
4
8
4°
7
1.016
1.270
0.406
0.508
1.270
6
5
9.652
10.16
0.254 ref.
7.112
8.382
7.62 typ.
0.254 ref.
0.508 ref.
ISO method A
3°
9
10°
0.203
0.305
2.794
3.302
i178010
Option 6
Option 9
Option 7
10.36
9.96
9.53
10.03
7.62 typ.
7.8
7.4
7.62 ref.
0.7
4.6
4.1
0.102
0.249
8 min.
0.25 typ.
15° max.
0.51
1.02
0.35
0.25
8.4 min.
10.3 max.
8 min.
10.16
10.92
18450
PACKAGE MARKING (this is an example of the IL300-E-X001)
IL300-E
X001
V YWW H 68
Rev. 1.7, 23-Sep-11
Document Number: 83622
10
For technical questions, contact: optocoupleranswers@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Legal Disclaimer Notice
www.vishay.com
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Disclaimer
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Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
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Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free
requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference
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Revision: 02-Oct-12
Document Number: 91000
1
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