IL300-DEFG Vishay, IL300-DEFG Datasheet - Page 2

• Manufacturer Part Number: IL300-DEFG
• Description: OPTOCOUPLER HI GAIN WIDE BW 8DIP
• Manufacturer: Vishay

Specifications of IL300-DEFG

• Mounting Type: Through Hole
• Isolation Voltage: 5300 Vrms
• Number Of Channels: 2
• Input Type: DC
• Voltage - Isolation: 5300Vrms
• Current Transfer Ratio (min): 0.77% @ 10mA
• Current Transfer Ratio (max): 1.18% @ 10mA
• Current - Dc Forward (if): 60mA
• Output Type: Linear Photovoltaic
• Package / Case: 8-DIP (0.300", 7.62mm)
• Current Transfer Ratio: 0.5 % to 1.1 %
• Forward Current: 10 mA
• Maximum Fall Time: 1.75 us
• Maximum Rise Time: 1.75 us
• Output Device: PIN Photodiode
• Configuration: 1 Channel
• Maximum Forward Diode Voltage: 1.5 V
• Maximum Reverse Diode Voltage: 5 V
• Maximum Input Diode Current: 60 mA
• Maximum Power Dissipation: 210 mW
• Maximum Operating Temperature: + 100 C
• Minimum Operating Temperature: - 55 C
• No. Of Channels: 1
• Optocoupler Output Type: Photodiode
• Input Current: 10mA
• Output Voltage: 50V
• Opto Case Style: DIP
• No. Of Pins: 8
• Gain Db Max: 1.181dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Current - Output / Channel: -
• Vce Saturation (max): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 751-1293-5; IL300-DEFGGI; IL300-DEFGGI

IL300
Vishay Semiconductors
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
satisfy the relationship of (I
The magnitude of this current is directly proportional to the
feedback transfer gain (K1) times the LED drive current
(V
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
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
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
K1-SERVO GAIN
The ratio of the input photodiode current (I
current (I
K2-FORWARD GAIN
The ratio of the output photodiode current (I
current (I
K3-TRANSFER GAIN
The transfer gain is the ratio of the forward gain to the servo
gain, i.e., K3 = K2/K1.
www.vishay.com
2
O
O
IN
/V
/V
/R1 = K1 x I
IN
IN
O
= (K2 x R2)/(K1 x R1).
= K3 (R2/R1).
= I
F
F
F
) i.e., K1 = I
), i.e., K2 = I
x K2 x R2).
F
). The op-amp will supply LED current to
P1
P2
/I
/I
F
F
.
.
P1
= V
P1
IN
For technical questions, contact:
, will be of a magnitude to
/R1).
O
/V
IN
Linear Optocoupler, High Gain
) becomes the
P1
P2
Stability, Wide Bandwidth
) to the LED
) to the LED
[e-mail]
ΔK3-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 mA to 20 mA. Its output flux typically changes by
- 0.5 %/°C over the above operational current range.
APPLICATION CIRCUIT
Vin
+
R1
Vb
Va
+
-
U1
V CC
Fig. 1 - Typical Application Circuit
I F
lp1
V CC
1
2
3
4
K1
IL300
K2
8
7
6
5
lp2
Document Number: 83622
V CC
V c
R2
Rev. 1.6, 10-Nov-10
-
+
U2
V CC
iil300_01
V out