TIL300ADCS - Texas Instruments - searchdatasheet.com

TIL300, TIL300A

PRECISION LINEAR OPTOCOUPLER

SOES019A – OCTOBER 1995 – REVISED JULY 1996

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ac or dc Signal Coupling

Wide Bandwidth ...>200 kHz

High Transfer-Gain Stability . . . ±0.05%/°C

3500 V Peak Isolation

UL Approval Pending

Applications

– Power-Supply Feedback

– Medical-Sensor Isolation

– Opto Direct-Access Arrangement (DAA)

– Isolated Process-Control Transducers

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 and generates a control signal that can be used 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 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 suf ficient photocurrent to keep

the node voltage Vb equal to node voltage Va.

–

IP2

2VCC+

2VCC–

VO = K3(R2/R1) VI

2VCC+

TIL300

1VCC+

1VCC–

1VCC+

–

IP1

NOTES: A. K1 is servo current gain, the ratio of the feedback 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

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

LEDK

LEDA

PDK1

PDA1

PDK2

PDA2

P PACKAGE

(TOP VIEW)

NC – No internal connection

TIL300, TIL300A

PRECISION LINEAR OPTOCOUPLER

SOES019A – OCTOBER 1995 – REVISED JULY 1996

2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Terminal Functions

TERMINAL

I/O

DESCRIPTION

NAME NO.

I/O

DESCRIPTION

LEDK 1LED cathode

LEDA 2LED anode

PDK1 3Photodiode 1 cathode

PDA1 4Photodiode 1 anode

PDA2 5Photodiode 2 anode

PDK2 6Photodiode 2 cathode

NC 7No internal connection

NC 8No 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 width < 10 µs 250 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reverse voltage, VR 5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reverse current, IR 10 µA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Detector

Continuous power dissipation (see Note 2) 50 mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reverse voltage, VR 50 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Coupler

Continuous total power dissipation (see Note 3) 210 mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature, Tstg –55°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating temperature, 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 or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may af fect 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.

TIL300, TIL300A

PRECISION LINEAR OPTOCOUPLER

SOES019A – OCTOBER 1995 – REVISED JULY 1996

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics at TA = 25°C

Emitter

PARAMETER CONDITIONS MIN TYP†MAX UNIT

VFForward voltage IF = 10 mA 1.25 1.50 V

Temperature coefficient of VF–2.2 mV/°C

IRReverse current VR = 5 V 10 µA

trRise time IF = 10 mA, ∆IF = 2 mA 1µs

tfFall time IF = 10 mA, ∆IF = 2 mA 1µs

CjJunction capacitance VF = 0, f = 1 MHz 15 pF

Detector

PARAMETER CONDITIONS MIN TYP†MAX UNIT

IDK†Dark current VR = 15 V, IF = 0 25 nA

Open circuit voltage IF = 10 mA 0.5 V

IOS Short circuit current limit IF = 10 mA 80 µA

CjJunction capacitance VF = 0, f = 1 MHz 12 pF

Coupler

PARAMETER CONDITIONS MIN TYP†MAX UNIT

K1‡

Servo current gain

IF = 1 mA 0.3% 0.7% 1.5%

K1‡

Ser

rrent

gain

IF = 10 mA 0.5% 1.25% 2%

K2§

Forward current gain

IF = 1 mA 0.3% 0.7% 1.5%

K2§

For

ard

rrent

gain

Detector bias IF = 10 mA 0.5% 1.25% 2%

TIL300

voltage = –15 V IF = 1 mA 0.75 1 1.25

K3¶

Transfer gain

TIL300

IF = 10 mA 0.75 1 1.25

K3¶

Transfer

gain

TIL300A

IF = 1 mA 0.9 1 1.10

TIL300A

IF = 10 mA 0.9 1 1.10

Gain tem

erature coefficient

K1/K2

IF=10mA

–0.5

Gain

temperat

coefficient

F =

±0.005

%/°C

∆K3#

Transfer gain linearity

IF = 1 to 10 mA ±0.25%

∆K3#

Transfer

gain

linearit

yIF = 1 to 10 mA, TA = 0 to 75°C±0.5%

BW Bandwidth IF = 10 mA,

IF(MODULATION) = ±2 mA RL = 1 kΩ,200 kHz

trRise time IF = 10 mA,

IF(MODULATION) = ±2 mA RL = 1 kΩ,1.75 µs

tfFall 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

†This symbol is not currently listed within EIA or JEDEC standards for semiconductor symbology.

‡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.

¶T ransfer gain (K3) is the ratio of the forward gain to the servo gain, i.e. K3 = K2/K1.

#T ransfer gain linearity (∆K3) is the percent deviation of the transfer gain K3 as a function of LED input current (IF) or the package temperature.

TIL300, TIL300A

PRECISION LINEAR OPTOCOUPLER

SOES019A – OCTOBER 1995 – REVISED JULY 1996

4POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

MECHANICAL DATA

P (R-PDIP-T8) PLASTIC DUAL-IN-LINE PACKAGE

4040082/B 03/95

0.310 (7,87)

0.290 (7,37)

0.010 (0,25) NOM

0.400 (10,60)

0.355 (9,02)

0.020 (0,51) MIN

0.070 (1,78) MAX

0.240 (6,10)

0.260 (6,60)

0.200 (5,08) MAX

0.125 (3,18) MIN

0.015 (0,38)

0.021 (0,53)

Seating Plane

0.010 (0,25)

0.100 (2,54) 0°–15°

NOTES: A. All linear dimensions are in inches (millimeters).

B. This drawing is subject to change without notice.

C. Falls within JEDEC MS-001

PACKAGING INFORMATION

Orderable Device Status (1) Package

Type Package

Drawing Pins Package

Qty Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)

TIL300 OBSOLETE PDIP N 8 TBD Call TI Call TI

TIL300A OBSOLETE PDIP N 8 TBD Call TI Call TI

TIL300ADCS OBSOLETE OPTO DCS 8 TBD Call TI Call TI

TIL300DCS OBSOLETE OPTO DCS 8 TBD Call TI Call TI

(1) The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.

LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.

NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in

a new design.

PREVIEW: Device has been announced but is not in production. Samples may or may not be available.

OBSOLETE: TI has discontinued the production of the device.

(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check

http://www.ti.com/productcontent for the latest availability information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined.

Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements

for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered

at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.

Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame

retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)

(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder

temperature.

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In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI

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PACKAGE OPTION ADDENDUM

www.ti.com 8-Apr-2005

Addendum-Page 1

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