VISHAY IL300 User Manual

Vishay Semiconductors

i179026

A

C

NC

NC

C

A

A

C

1

2

3

4

8

7

6

5

K2

K1

Linear Optocoupler, High Gain Stability, Wide Bandwidth

Features

• Couples AC and DC signals

• 0.01 % Servo Linearity

• Wide Bandwidth, > 200 kHz

• High Gain Stability, ± 0.05 %/ °C

• Low Input-Output Capacitance

• Low Power Consumption, < 15 mW

• Isolation Test Voltage, 5300 V

• Internal Insulation Distance, > 0.4 mm for VDE

• Component in accordance to RoHS 2002/95/EC
and WEEE 2002/96/EC

Agency Approvals

• UL File #E52744

• DIN EN 60747-5-2 (VDE0884)
DIN EN 60747-5-5 pending
Available with Option 1, Add -X001 Suffix

RMS

, 1.0 sec.

IL300

Applications

Power Supply Feedback Voltage/Current
Medical Sensor Isolation
Audio Signal Interfacing
Isolated Process Control Transducers
Digital Telephone Isolation

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
LED’s flux and generates a control signal (I
can be used to servo the LED drive current. This tech­nique compensates for the LED’s non-linear, time,
and temperature characteristics. The output PIN pho­todiode produces an output signal (I

) that is linearly

P2

related to the servo optical flux created by the LED.
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.

P1

) that

Order Information

Part Remarks

IL300 K3 = 0.557 - 1.618, DIP-8

IL300-DEFG K3 = 0.765 - 1.181, DIP-8

IL300-EF K3 = 0.851 - 1.061, DIP-8

IL300-E K3 = 0.851 - 0.955, DIP-8

IL300-F K3 = 0.945 - 1.061, DIP-8

IL300-X006 K3 = 0.557 - 1.618, DIP-8 400mil (option 6)

IL300-X007 K3 = 0.557 - 1.618, SMD-8 (option 7)

IL300-X009 K3 = 0.557 - 1.618, SMD-8 (option 9)

IL300-DEFG-X006 K3 = 0.765 - 1.181, DIP-8 400 mil (option 6)

IL300-DEFG-X007 K3 = 0.765 - 1.181, SMD-8 (option 7)

IL300-DEFG-X009 K3 = 0.765 - 1.181, SMD-8 (option 9)

IL300-EF-X006 K3 = 0.851 - 1.061, DIP-8 400 mil (option 6)

IL300-EF-X007 K3 = 0.851 - 1.061, SMD-8 (option 7)

IL300-EF-X009 K3 = 0.851 - 1.061, SMD-8 (option 9)

IL300-E-X006 K3 = 0.851 - 0.955, DIP-8 400 mil (option 6)

IL300-E-X007 K3 = 0.851 - 0.955, SMD-8 (option 7)

IL300-E-X009 K3 = 0.851 - 0.955, SMD-8 (option 9)

IL300-F-X006 K3 = 0.945 - 1.061, DIP-8 400 mil (option 6)

IL300-F-X007 K3 = 0.945 - 1.061, SMD-8 (option 7)

IL300-F-X009 K3 = 0.945 - 1.061, SMD-8 (option 9)

For additional information on the available options refer to
Option Information.

Document Number 83622

Rev. 1.5, 24-Mar-05

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1

IL300

Vishay Semiconductors

VISHAY

Operation Description

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,
I

, will be of a magnitude to satisfy the relationship of

P1

(I

= VIN/R1).

P1

The magnitude of this current is directly proportional
to the feedback transfer gain (K1) times the LED drive
current ( V
LED current to force sufficient photocurrent to keep
the node voltage (Vb) equal to Va.

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 ( V

Therefore, the overall transfer gain (V
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
V

O/VIN

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
V

O/VIN

/R1 = K1 • IF). The op-amp will supply

IN

= IF • K2 • R2).

O

O/VIN

=(K2 • R2)/(K1 • R1).

= K3 (R2/R1).

) becomes

∆K3-Transfer Gain Linearity

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

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 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.

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 5.0 mA to 20 mA. Its output
flux typically changes by - 0.5 % /°C over the above
operational current range.

Application Circuit

K1-Servo Gain

The ratio of the input photodiode current (IP1) to the
LED current (I

) i.e., K1 = IP1/IF.

F

K2-Forward Gain

The ratio of the output photodiode current (IP2) to the
LED current (I

), i.e., K2 = IP2/IF.

F

K3-Transfer Gain

The Transfer Gain is the ratio of the Forward Gain to
the Servo gain, i.e., K3 = K2/K1.

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2

+

Vin

R1

Va

Vb

V

CC

+

U1

-

I

F

V

CC

lp 1

Figure 1. Typical Application Circuit

IL300

K2

8

7

6

5

lp 2

1

2

K1

3

4

V

CC

-

V

CC

U2

V

c

+

R2

Document Number 83622

Rev. 1.5, 24-Mar-05

V

iil300_01

out

VISHAY

IL300

Vishay Semiconductors

Absolute Maximum Ratings

T

= 25 °C, unless otherwise specified

amb

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 Rating for extended periods of the time can adversely affect reliability.

Input

Parameter Test condition Symbol Value Unit

Power dissipation P

Derate linearly from 25 °C 2.13 mW/°C

Forward current I
Surge current (pulse width < 10 µs) I

Reverse voltage V

Thermal resistance R

Junction temperature T

diss

F

PK

R

th

j

160 mW

60 mA

250 mA

5.0 V

470 K/W

100 °C

Output

Parameter Test condition Symbol Value Unit

Power dissipation P

Derate linearly from 25 °C 0.65 mW/°C

Reverse voltage V

Junction temperature T

Thermal resistance R

diss

R

j

th

50 mA

50 V

100 °C

1500 K/W

Coupler

Parameter Test condition Symbol Value Unit

Total package dissipation at
25 °C

Derate linearly from 25 °C 2.8 mW/°C

Storage temperature T

Operating temperature T

Isolation test voltage > 5300 V

Isolation resistance VIO = 500 V, T

V

= 500 V, T

IO

= 25 °C R

amb

= 100 °C R

amb

P

amb

tot

stg

IO

IO

210 mW

- 55 to + 150 °C

- 55 to + 100 °C

RMS

12

> 10

11

> 10

Ω
Ω

Document Number 83622

Rev. 1.5, 24-Mar-05

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3

IL300

VISHAY

Vishay Semiconductors

Electrical Characteristics

T

= 25 °C, unless otherwise specified

amb

Minimum and maximum values are testing requirements. 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.

Input

LED Emitter

Parameter Test condition Symbol Min Ty p. Max Unit

Forward voltage I

Temperature coefficient ∆VF/∆ °C - 2.2 mV/°C

V

F

Reverse current V

Junction capacitance V

Dynamic resistance I

= 10 mA V

F

= 5 V I

R

= 0 V, f = 1.0 MHz C

F

= 10 mA ∆VF/∆I

F

F

R

j

F

1.25 1.50 V

1.0 µA

15 pF

6.0 Ω

Output

Parameter Test condition Symbol Min Ty p. Max Unit

Dark current V

Open circuit voltage I

Short circuit current I

Junction capacitance V

Noise equivalent power V

= -15 V, IF = 0 µsI

det

= 10 mA V

F

= 10 mA I

F

= 0, f = 1.0 MHz C

F

= 15 V NEP

det

D

D

SC

j

1.0 25 nA

500 mV

70 µA

12 pF

14

4 x 10

W/√Hz

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Document Number 83622

Rev. 1.5, 24-Mar-05

VISHAY

IL300

Vishay Semiconductors

Coupler

Parameter Test condition Symbol Min Ty p. Max Unit

Input- output capacitance V

K1, Servo gain (I

)I

P1/IF

Servo current, see Note 1,2 I

K2, Forward gain (I

)I

P2/IF

Forward current I

K3, Transfer gain (K2/K1) see
Note 1,2

Transfer gain linearity I

Photoconductive Operation

Frequency response I

Phase response at 200 kHz V

1. Bin Sorting:

K3 (transfer gain) is sorted into bins that are ± 6 % , as follows:

Bin A = 0.557 - 0.626

Bin B = 0.620 - 0.696

Bin C = 0.690 - 0.773

Bin D = 0.765 - 0.859

Bin E = 0.851 - 0.955

Bin F = 0.945 - 1.061

Bin G = 1.051 - 1.181

Bin H = 1.169 - 1.311

Bin I = 1.297 - 1.456

Bin J = 1.442 - 1.618

K3 = K2/K1. K3 is tested at I

F

2. 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.

3. 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, four different bin option parts are offered.

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.

IL300-E: Order this part number to receive category E only.

= 0 V, f = 1.0 MHz 1.0 pF

F

= 10 mA, V

F

= 10 mA, V

F

= 10 mA, V

F

= 10 mA, V

F

= 10 mA, V

I

F

= 1.0 to 10 mA ∆K3 ± 0.25 %

F

I

= 1.0 to 10 mA,

F

= 0 °C to 75 °C

T

amb

= 10 mA, MOD = ± 4.0 mA,

Fq

R

= 50 Ω

L

= - 15 V -45 Deg.

det

= 10 mA, V

det

= - 15 V K1 0.0050 0.007 0.011

det

= - 15 V I

det

= - 15 V K2 0.0036 0.007 0.011

det

= - 15 V I

det

= - 15 V K3 0.56 1.00 1.65 K2/K1

det

P1

P2

70 µA

70 µA

± 0.5 %

BW (-3 db) 200 KHz

= - 15 V.

Switching Characteristics

Parameter Test condition Symbol Min Ty p. Max Unit

Switching time ∆I

Rise time t

Fall tim e t

Document Number 83622

Rev. 1.5, 24-Mar-05

= 2.0 mA, IFq = 10 mA t

F

r

t

f

r

f

1.0 µs

1.0 µs

1.75 µs

1.75 µs

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