FOD2711A — Optically Isolated Error Amplifier
©2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2711A Rev. 1.0.0
June 2010
FOD2711A
Optically Isolated Error Amplifier
Features
■
Optocoupler, precision reference and error amplifier in
single package
■
1.240V ± 1% reference
■
CTR 100% to 200%
■
5,000V RMS isolation
■
UL approval E90700, Volume 2
Applications
■
Power supplies regulation
■
DC to DC converters
Description
The FOD2711A Optically Isolated Amplifier consists of
the popular AZ431L precision programmable shunt ref-
erence and an optocoupler. The optocoupler is a gallium
arsenide (GaAs) light emitting diode optically coupled to
a silicon phototransistor. The reference voltage toler-
ance is 1%. The current transfer ratio (CTR) ranges from
100% to 200%.
It is primarily intended for use as the error amplifier/
reference voltage/optocoupler function in isolated AC to
DC power supplies and dc/dc converters.
When using the FOD2711A, power supply designers can
reduce the component count and save space in tightly
packaged designs. The tight tolerance reference elimi-
nates the need for adjustments in many applications.
The device comes in a 8-pin dip white package.
Functional Bock Diagram Package Outlines
8
8
1
8
1
1
1
2
3
4 5
6
7
8LED
FB
COMP
GND
NC
C
E
NC
©2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2711A Rev. 1.0.0 2
FOD2711A — Optically Isolated Error Amplifier
Pin Definitions
*The compensation network must be attached between pins 6 and 7.
Typical Application
Pin Number Pin Name Pin Description
1NCNot connected
2CPhototransistor Collector
3EPhototransistor Emitter
4NCNot connected
5 GND Ground
6 COMP Error Amplifier Compensation. This pin is the output of the error amplifier.*
7FBVoltage Feedback. This pin is the inverting input to the error amplifier
8 LED Anode LED. This pin is the input to the light emitting diode.
VO
V1
R1
R2
2
3
8
6
7
5
PWM
Control
FAN4803
FOD2711A
©2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2711A Rev. 1.0.0 3
FOD2711A — Optically Isolated Error Amplifier
Absolute Maximum Ratings
(T
A
= 25°C unless otherwise specified)
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Notes:
1. Derate linearly from 25°C at a rate of 2.42mW/°C
2. Derate linearly from 25°C at a rate of 1.42mW/°C.
3. Derate linearly from 25°C at a rate of 2.42mW/°C.
Symbol Parameter Value Units
T
STG
Storage Temperature -40 to +125 °C
T
OPR
Operating Temperature -40 to +85 °C
T
SOL
Lead Solder Temperature 260 for 10 sec. °C
V
LED
Input Voltage 13.2 V
I
LED
Input DC Current 20 mA
V
CEO
Collector-Emitter Voltage 30 V
V
ECO
Emitter-Collector Voltage 7 V
I
C
Collector Current 50 mA
PD1 Input Power Dissipation
(1)
145 mW
PD2 Transistor Power Dissipation
(2)
85 mW
PD3 Total Power Dissipation
(3)
145 mW
©2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2711A Rev. 1.0.0 4
FOD2711A — Optically Isolated Error Amplifier
Electrical Characteristics
(T
A
= 25°C unless otherwise specified)
Input Characteristics
Output Characteristics
Transfer Characteristics
Notes:
4. The deviation parameters V
REF(DEV)
and I
REF(DEV)
are defined as the differences between the maximum and
minimum values obtained over the rated temperature range. The average full-range temperature coefficient of the
reference input voltage,
∆
V
REF
, is defined as:
where
∆
T
A
is the rated operating free-air temperature range of the device.
5. The dynamic impedance is defined as |Z
OUT
| =
∆
V
COMP
/
∆
I
LED
. When the device is operating with two external
resistors (see Figure 2), the total dynamic impedance of the circuit is given by:
Symbol Parameter Test Conditions Min. Typ.* Max. Unit
V
F
LED Forward Voltage I
LED
= 10mA, V
COMP
= V
FB
(Fig. 1) 1.5 V
V
REF
Reference Voltage V
COMP
= V
FB
, I
LED
= 10mA (Fig.1)
-40°C to +85°C 1.221 1.259 V
25°C 1.228 1.240 1.252
V
REF (DEV)
Deviation of V
REF
Over
Temperature
(4)
T
A
= -40 to +85°C 4 12 mV
∆
V
REF
/
∆
V
COMP
Ratio of Vref Variation
to the Output of the Error
Amplifier
I
LED
= 10 mA, V
COMP
= V
REF
to 12V
(Fig. 2)
-1.5 -2.7 mV/V
I
REF
Feedback Input Current I
LED
= 10mA, R1 = 10k
Ω
(Fig. 3) 0.15 0.5 µA
I
REF (DEV)
Deviation of I
REF
Over
Temperature
(4)
T
A
= -40°C to +85°C 0.15 0.3 µA
I
LED (MIN)
Minimum Drive Current V
COMP
= V
FB
(Fig. 1) 55 80 µA
I
(OFF)
Off-State Error Amplifier
Current
V
LED
= 6V, V
FB
= 0 (Fig. 4) 0.001 0.1 µA
| Z
OUT
| Error Amplifier Output
Impedance
(5)
V
COMP
= V
FB
, I
LED
= 0.1mA to 15mA,
f<1 kHZ)
0.25
Ω
Symbol Parameter Test Conditions Min. Typ. Max. Unit
I
CEO
Collector Dark Current V
CE
= 10V (Fig. 5) 50 nA
BV
ECO
Emitter-Collector Voltage Breakdown I
E
= 100µA 7 V
BV
CEO
Collector-Emitter Voltage Breakdown I
C
= 1.0mA 70 V
Symbol
Parameter
Test Conditions Min. Typ. Max. Unit
CTR Current Transfer Ratio I
LED
= 10mA, V
COMP
= V
FB
,
V
CE
= 5V (Fig. 6)
100 200 %
V
CE
(SAT)
Collector-Emitter Saturation
Voltage
I
LED
= 10mA, V
COMP
= V
FB,
I
C
= 2.5mA (Fig. 6)
0.4 V
∆VREF ppm/°C()
VREF DEV()
/VREF TA25°C=(){}106
×
∆TA
-----------------------------------------------------------------------------------------------------=
ZOUT, TOT =∆V
∆I
--------Z
OUT 1R1
R2
--------+×≈
©2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2711A Rev. 1.0.0 5
FOD2711A — Optically Isolated Error Amplifier
Electrical Characteristics
(Continued) (T
A
= 25°C unless otherwise specified)
Isolation Characteristics
Switching Characteristics
Notes:
6. Device is considered as a two terminal device: Pins 1, 2, 3 and 4 are shorted together and Pins 5, 6, 7 and 8 are shorted
together.
7. Common mode transient immunity at output high is the maximum tolerable (positive) dVcm/dt on the leading edge
of the common mode impulse signal, Vcm, to assure that the output will remain high. Common mode transient
immunity at output low is the maximum tolerable (negative) dVcm/dt on the trailing edge of the common pulse
signal,Vcm, to assure that the output will remain low.
Symbol Parameter Test Conditions Min. Typ. Max. Unit
I
I-O
Input-Output Insulation
Leakage Current
RH = 45%, T
A
= 25°C, t = 5s,
V
I-O
= 3000 VDC
(6)
1.0 µA
V
ISO
Withstand Insulation
Voltage
RH
≤
50%, T
A
= 25°C, t = 1 min.
(6)
5000 Vrms
R
I-O Resistance (Input to Output) VI-O = 500 VDC(6) 1012 Ω
Symbol Parameter Test Conditions Min. Typ. Max. Unit
BW Bandwidth (Fig. 7) 10 kHZ
CMHCommon Mode Transient
Immunity at Output HIGH
ILED = 0mA, Vcm = 10 VPP,
RL = 2.2kΩ(7) (Fig. 8)
1.0 kV/µs
CMLCommon Mode Transient
Immunity at Output LOW
ILED = 1mA, Vcm = 10 VPP,
RL = 2.2kΩ(7) (Fig. 8)
1.0 kV/µs
©2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2711A Rev. 1.0.0 6
FOD2711A — Optically Isolated Error Amplifier
Test Circuits
I(LED)
V(LED)
VCOMP
VCOMP
ICEO
VCE
VREF
VCE
I(LED)
VF
VREF VREF
82
3
2
3
VV
V
6
7
5
I(LED)
I(LED) IC
I(OFF)
IREF
8
6
2
3
2
3
2
3
V
V
7
5
8
6
7
5
8
6
7
5
8
6
2
3
7
5
R1
8
6R1
R2
7
5
Figure 1. V
REF
, V
F,
I
LED
(min.) Test Circuit
Figure 3. I
REF
Test Circuit
Figure 5. I
CEO
Test Circuit Figure 6. CTR, V
CE(sat)
Test Circuit
Figure 4. I
(OFF)
Test Circuit
Figure 2. ∆V
REF /
∆V
COMP
Test Circuit
©2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2711A Rev. 1.0.0 7
FOD2711A — Optically Isolated Error Amplifier
Test Circuits (Continued)
3
2
1
4
8
7
6
AB
5
3
4
2
1
6
5
7
8
VCC = +5V DC
VCC = +5V DC
IF = 10mA
IF = 0mA (A)
IF = 10mA (B)
VIN
0.47V
0.1 VPP
47Ω
VOUT
VOUT
VCM
10VP-P
R1
2.2kΩ
RL
1µf
+
_
Figure 7. Frequency Response Test Circuit
Figure 8. CMH and CML Test Circuit
©2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2711A Rev. 1.0.0 8
FOD2711A — Optically Isolated Error Amplifier
Typical Performance Curves
VCOMP – CATHODE VOLTAGE (V)
-1 0 1 2
Fig. 9b LED Current vs. Cathode Voltage
ILED – SUPPLY CURRENT (mA)
-150
-100
-50
0
50
100
150
TA = 25°C
VCOMP
= VFB
Fig. 10 Reference Voltage vs. Ambient Temperature
TA – AMBIENT TEMPERATURE (°C)
-40 -20 0 20 40 60 80 100
VREF – REFERENCE VOLTAGE (V)
1.230
1.232
1.234
1.236
1.238
1.240
1.242
1.244 ILED =
Fig. 11 Reference Current vs. Ambient Temperature
TA – AMBIENT TEMPERATURE (°C)
IREF – REFERENCE CURRENT (nA)
120
-40 -20 0 20 40 60 80 100
140
160
180
200
220
240
260
280
Fig. 12 Off-State Current vs. Ambient Temperature
TA – AMBIENT TEMPERATURE (°C)
-40 -20 0 20 40 60 80 100
IOFF – OFF-STATE CURRENT (NA)
0.1
1
10
100
1000 VCC = 13.2V
ILED = 10mA
R1 = 10 kΩ
10mA
Fig. 9a LED Current vs. Cathode Voltage
VCOMP – CATHODE VOLTAGE (V)
-1.0 -0.5 0.0 0.5 1.0 1.5
I
LED
– SUPPLY CURRENT (mA)
-15
-10
-5
0
5
10
15
TA = 25°C
VCOMP = VFB
VF – FORWARD VOLTAGE (V)
Fig. 13 Forward Current vs. Forward Voltage
IF – FORWARD CURRENT (mA)
5
10
15
20
25°C
0°C
70°C
0.9 1.0 1.1 1.2 1.3 1.4
©2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2711A Rev. 1.0.0 9
FOD2711A — Optically Isolated Error Amplifier
Typical Performance Curves (Continued)
TA – AMBIENT TEMPERATURE (°C)
0102030405060708090100
Fig. 15 Collector Current vs. Ambient Temperature
IC – COLLECTOR CURRENT (mA)
0
5
10
15
20
25
30
ILED = 1mA
ILED = 5mA
ILED = 10mA
ILED = 20mA
VCE
TA – AMBIENT TEMPERATURE (°C)
Fig. 14 Dark Current vs. Ambient Temperature
ICEO – DARK CURRENT (nA)
VCE = 10V
-40 -20 0 20 40 60 80 100
0.1
1
10
100
1000
10000
Fig. 16 Current Transfer Ratio vs. LED Current
ILED – FORWARD CURRENT (mA)
10501520253035404550
(IC/IF) – CURRENT TRANSFER RATIO (%)
40
60
80
100
120
140
0°C
25°C
70°C
VCE = 5V
Fig. 17 Saturation Voltage vs. Ambient Temperature
TA – AMBIENT TEMPERATURE (°C)
-40 -20 0 20 40 60 80 100
VCE(SAT) – SATURATION VOLTAGE (V)
0.10
0.12
0.14
0.16
0.18
0.20
0.22
0.24
0.26
= 5V
Fig. 18 Collector Current vs. Collector Voltage
VCE – COLLECTOR-EMITTER VOLTAGE (V)
012345678910
IC – COLLECTOR CURRENT (mA)
0
5
10
15
20
25
30
35
ILED = 1mA
ILED = 5mA
ILED = 10mA
ILED = 20mA
TA = 25°C
Fig. 19 Rate of Change Vref to Vcomp vs. Temperature
-40-60 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
DELTA VREF / DELTA VCOMP ( mV/V)
-1.6
-1.4
-1.2
-1.0
-0.8
-0.6
-0.4
-0.2
©2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2711A Rev. 1.0.0 10
FOD2711A — Optically Isolated Error Amplifier
Typical Performance Curves (Continued)
Fig. 20 Voltage Gain vs. Frequency
1010.1 100 1000
VOLTAGE GAIN (dB)
0
-5
-15
-10
RL = 100Ω
RL = 500Ω
RL = 1kΩ
FREQUENCY (kHZ)
VCC = 10V
IF = 10mA
©2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2711A Rev. 1.0.0 11
FOD2711A — Optically Isolated Error Amplifier
The FOD2711A
The FOD2711A is an optically isolated error amplifier. It
incorporates three of the most common elements neces-
sary to make an isolated power supply, a reference volt-
age, an error amplifier, and an optocoupler. It is
functionally equivalent to the popular AZ431L shunt volt-
age regulator plus the CNY17F-3 optocoupler.
Powering the Secondary Side
The LED pin in the FOD2711A powers the secondary
side, and in particular provides the current to run the
LED. The actual structure of the FOD2711A dictates the
minimum voltage that can be applied to the LED pin: The
error amplifier output has a minimum of the reference
voltage, and the LED is in series with that. Minimum volt-
age applied to the LED pin is thus 1.24V + 1.5V = 2.74V.
This voltage can be generated either directly from the
output of the converter, or else from a slaved secondary
winding. The secondary winding will not affect regula-
tion, as the input to the FB pin may still be taken from the
output winding.
The LED pin needs to be fed through a current limiting
resistor. The value of the resistor sets the amount of cur-
rent through the LED, and thus must be carefully
selected in conjunction with the selection of the primary
side resistor.
Feedback
Output voltage of a converter is determined by selecting
a resistor divider from the regulated output to the FB pin.
The FOD2711A attempts to regulate its FB pin to the
reference voltage, 1.24V. The ratio of the two resistors
should thus be:
The absolute value of the top resistor is set by the input
offset current of 0.8µA. To achieve 1% accuracy, the
resistance of RTOP should be:
Compensation
The compensation pin of the FOD2711A provides the
opportunity for the designer to design the frequency
response of the converter. A compensation network may
be placed between the COMP pin and the FB pin. In
typical low-bandwidth systems, a 0.1µF capacitor may
be used. For converters with more stringent require-
ments, a network should be designed based on mea-
surements of the system’s loop. An excellent reference
for this process may be found in “Practical Design of
Power Supplies” by Ron Lenk, IEEE Press, 1998.
Secondary Ground
The GND pin should be connected to the secondary
ground of the converter.
No Connect Pins
The NC pins have no internal connection. They should
not have any connection to the secondary side, as this
may compromise the isolation structure.
Photo-Transistor
The Photo-transistor is the output of the FOD2711A. In a
normal configuration the collector will be attached to a
pull-up resistor and the emitter grounded. There is no
base connection necessary.
The value of the pull-up resistor, and the current limiting
resistor feeding the LED, must be carefully selected to
account for voltage range accepted by the PWM IC, and
for the variation in current transfer ratio (CTR) of the
opto-isolator itself.
Example: The voltage feeding the LED pins is +12V, the
voltage feeding the collector pull-up is +10V, and the
PWM IC is the Fairchild KA1H0680, which has a 5V ref-
erence. If we select a 10KΩ resistor for the LED, the
maximum current the LED can see is:
(12V–2.74V) / 10kΩ = 926µA.
The CTR of the opto-isolator is a minimum of 100%, and
so the minimum collector current of the photo-transistor
when the diode is full on is also 926µA. The collector
resistor must thus be such that:
select 10kΩ to allow some margin.
RTOP
RBOTTOM
--------------------------VOUT
VREF
-------------- 1–=
VOUT 1.24–
RTOP
-------------------------------- 8 0 µA>
10V 5V–
RCOLLECTOR
----------------------------------- 9 2 6 µA or RCOLLECTOR 5.4KΩ;><
©2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2711A Rev. 1.0.0 12
FOD2711A — Optically Isolated Error Amplifier
Package Dimensions
Through Hole
Surface Mount
Note:
All dimensions are in inches (millimeters)
0.4" Lead Spacing
8-Pin DIP – Land Pattern
0.200 (5.08)
0.140 (3.55)
0.100 (2.54) TYP
0.022 (0.56)
0.016 (0.41)
0.020 (0.51) MIN
0.390 (9.91)
0.370 (9.40)
0.270 (6.86)
0.250 (6.35)
3
0.070 (1.78)
0.045 (1.14)
241
56 78
0.300 (7.62)
TYP
0.154 (3.90)
0.120 (3.05)
0.016 (0.40)
0.008 (0.20)
15° MAX
PIN 1
ID.
SEATING PLANE
Lead Coplanarity : 0.004 (0.10) MAX
0.270 (6.86)
0.250 (6.35)
0.390 (9.91)
0.370 (9.40)
0.022 (0.56)
0.016 (0.41)
0.100 (2.54)
TYP
0.020 (0.51)
MIN
0.070 (1.78)
0.045 (1.14)
0.300 (7.62)
TYP
0.405 (10.30)
MAX.
0.315 (8.00)
MIN
0.045 (1.14)
32 14
5678
0.016 (0.41)
0.008 (0.20)
PIN 1
ID.
0.200 (5.08)
0.140 (3.55)
0.100 (2.54) TYP
0.022 (0.56)
0.016 (0.41)
0.004 (0.10) MIN
0.390 (9.91)
0.370 (9.40)
0.270 (6.86)
0.250 (6.35)
3
0.070 (1.78)
0.045 (1.14)
241
56 78
0.400 (10.16)
TYP
0.154 (3.90)
0.120 (3.05)
0.016 (0.40)
0.008 (0.20)
0° to 15°
PIN 1
ID.
SEATING PLANE
0.070 (1.78)
0.060 (1.52)
0.030 (0.76)
0.100 (2.54)
0.295 (7.49)
0.415 (10.54)
©2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2711A Rev. 1.0.0 13
FOD2711A — Optically Isolated Error Amplifier
Ordering Information
Marking Information
Option Example Part Number Description
No Option FOD2711A Standard Through Hole
S FOD2711AS Surface Mount Lead Bend
SD FOD2711ASD Surface Mount; Tape and Reel
T FOD2711AT 0.4" Lead Spacing
V FOD2711AV VDE0884
TV FOD2711ATV VDE0884; 0.4” Lead Spacing
SV FOD2711ASV VDE0884; Surface Mount
SDV FOD2711ASDV VDE0884; Surface Mount; Tape and Reel
1
2
6
43 5
Definitions
1Fairchild logo
2Device number
3VDE mark (Note: Only appears on parts ordered with VDE
option – See order entry table)
4Two digit year code, e.g., ‘03’
5Two digit work week ranging from ‘01’ to ‘53’
6Assembly package code
2711A
BYY
XXV
©2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2711A Rev. 1.0.0 14
FOD2711A — Optically Isolated Error Amplifier
Carrier Tape Specifications
Reflow Profile
Symbol Description Dimension in mm
WTape Width 16.0 ± 0.3
tTape Thickness 0.30 ± 0.05
P0Sprocket Hole Pitch 4.0 ± 0.1
D0Sprocket Hole Diameter 1.55 ± 0.05
E Sprocket Hole Location 1.75 ± 0.10
FPocket Location 7.5 ± 0.1
P24.0 ± 0.1
PPocket Pitch 12.0 ± 0.1
A0Pocket Dimensions 10.30 ±0.20
B010.30 ±0.20
K04.90 ±0.20
W1Cover Tape Width 1.6 ± 0.1
dCover Tape Thickness 0.1 max
Max. Component Rotation or Tilt 10°
R Min. Bending Radius 30
d
0
P
t2
D0
1
1
W
User Direction of Feed
0
K
B0
A0W
E
D
F
P
P
• Peak reflow temperature: 260 C (package surface temperature)
• Time of temperature higher than 183 C for 160 seconds or less
• One time soldering reflow is recommended
245 C, 10–30 s
Time (Minute)
0
300
250
200
150
100
50
0
0.5 1 1.5 2 2.5 3 3.5 4 4.5
Temperature (°C)
Time above 183 C, <160 sec
Ramp up = 2–10 C/sec
260 C peak
©2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FOD2711A Rev. 1.0.0 15
TRADEMARKS
The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidiaries,andisnot
intended to be an exhaustive list of all such trademarks.
AccuPower™
Auto-SPM™
Build it Now™
CorePLUS™
CorePOWER™
CROSSVOLT™
CTL™
Current Transfer Logic™
DEUXPEED®
Dual Cool™
EcoSPARK®
EfficientMax™
ESBC™
®
Fairchild®
Fairchild Semiconductor®
FACT Quiet Series™
FACT®
FAST®
FastvCore™
FETBench™
FlashWriter®*
FPS™
F-PFS™
FRFET®
Global Power ResourceSM
Green FPS™
Green FPS™e-Series™
Gmax™
GTO™
IntelliMAX™
ISOPLANAR™
MegaBuck™
MICROCOUPLER™
MicroFET™
MicroPak™
MicroPak2™
MillerDrive™
MotionMax™
Motion-SPM™
OptoHiT™
OPTOLOGIC®
OPTOPLANAR®
®
PDP SPM™
Power-SPM™
PowerTrench®
PowerXS™
Programmable Active Droop™
QFET®
QS™
Quiet Series™
RapidConfigure™
™
Saving our world, 1mW/W/kW at a time™
SignalWise™
SmartMax™
SMART START™
SPM®
STEALTH™
SuperFET™
SuperSOT™-3
SuperSOT™-6
SuperSOT™-8
SupreMOS®
SyncFET™
Sync-Lock™
®*
The Power Franchise®
TinyBoost™
TinyBuck™
TinyCalc™
TinyLogic®
TINYOPTO™
TinyPower™
TinyPWM™
TinyWire™
TriFault Detect™
TRUECURRENT™*
"SerDes™
UHC®
Ultra FRFET™
UniFET™
VCX™
VisualMax™
XS™
* Trademarks of System General Corporation, used under license by Fairchild Semiconductor.
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE
RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT
OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE
SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN,
WHICH COVERS THESE PRODUCTS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE
EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION.
As used herein:
1. Life support devices or systems are devices or systems which, (a)
are intended for surgical implant into the body or (b) support or
sustain life, and (c) whose failure to perform when properly used in
accordance with instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the user.
2. A critical component in any component of a life support, device, or
system whose failure to perform can be reasonably expected to
cause the failure of the life support device or system, or to affect its
safety or effectiveness.
ANTI-COUNTERFEITING POLICY
Fairchild Semiconductor Corporation's Anti-Counterfeiting Policy. Fairchild's Anti-Counterfeiting Policy is also stated on our external website, www.fairchildsemi.com,
under Sales Support.
Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor products are experiencing counterfeiting of their
parts. Customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation, substandard performance,failed
applications, and increased cost of production and manufacturing delays. Fairchild is taking strong measures to protect ourselves and our customersfromthe
proliferation of counterfeit parts. Fairchild strongly encourages customers to purchase Fairchild parts either directly from Fairchild or from Authorized Fairchild
Distributors who are listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized FairchildDistributors
are genuine parts, have full traceability, meet Fairchild's quality standards for handling and storage and provide access to Fairchild's full range of up-to-date technical
and product information. Fairchild and our Authorized Distributors will stand behind all warranties and will appropriately address any warranty issues that may arise.
Fairchild will not provide any warranty coverage or other assistance for parts bought from Unauthorized Sources. Fairchild is committed to combat this global
problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized distributors.
PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet
Identification
Product Status Definition
Advance Information Formative / In Design Datasheet contains the design specifications for product development. Specifications may change
in any manner without notice.
Preliminary First Production Datasheet contains preliminary data; supplementary data will be published at a later date. Fairchild
Semiconductor reserves the right to make changes at any time without notice to improve design.
No Identification Needed Full Production Datasheet contains final specifications. Fairchild Semiconductor reserves the right to make
changes at any time without notice to improve the design.
Obsolete Not In Production Datasheet contains specifications on a product that is discontinued by Fairchild Semiconductor.
The datasheet is for reference information only.
Rev. I49
n
FOD2711A — Optically Isolated Error Amplifier
