FOD2711
Optically Isolated Error Amplifier
Features
Description
■ Optocoupler, precision reference and error amplifier in
The FOD2711 Optically Isolated Amplifier consists of the
popular RC431A precision programmable shunt reference and an optocoupler. The optocoupler is a gallium
arsenide (GaAs) light emitting diode optically coupled to
a silicon phototransistor. The reference voltage tolerance is 1%. The current transfer ratio (CTR) ranges from
100% to 200%.
■
■
■
■
single package
1.240V ± 1% reference
CTR 100% to 200%
5,000V RMS isolation
UL approval E90700, Volume 2
CSA approval 1296837
VDE approval 40002463
BSI approval 8702, 8703
Applications
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 FOD2711, power supply designers can
reduce the component count and save space in tightly
packaged designs. The tight tolerance reference eliminates the need for adjustments in many applications.
■ Power supplies regulation
■ DC to DC converters
The device comes in a 8-pin dip white package.
Functional Bock Diagram
NC
1
8 LED
C
2
7 FB
E
3
6 COMP
Package Outlines
8
1
8
NC
4
©2003 Fairchild Semiconductor Corporation
FOD2711 Rev. 1.0.1
5 GND
8
1
1
www.fairchildsemi.com
FOD2711 — Optically Isolated Error Amplifier
August 2008
Pin Number
Pin Name
Pin Description
1
NC
2
C
Phototransistor Collector
3
E
Phototransistor Emitter
4
NC
5
GND
6
COMP
7
FB
8
LED
Not connected
Not connected
Ground
Error Amplifier Compensation. This pin is the output of the error amplifier.*
Voltage Feedback. This pin is the inverting input to the error amplifier
Anode LED. This pin is the input to the light emitting diode.
*The compensation network must be attached between pins 6 and 7.
Typical Application
V1
FAN4803
PWM
Control
VO
FOD2711
2
8
6
3
7
5
©2003 Fairchild Semiconductor Corporation
FOD2711 Rev. 1.0.1
R1
R2
www.fairchildsemi.com
2
FOD2711 — Optically Isolated Error Amplifier
Pin Definitions
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.
Symbol
Parameter
Value
Units
TSTG
Storage Temperature
-40 to +125
°C
TOPR
Operating Temperature
-40 to +85
°C
260 for 10 sec.
°C
13.2
V
TSOL
Lead Solder Temperature
VLED
Input Voltage
ILED
Input DC Current
20
mA
VCEO
Collector-Emitter Voltage
30
V
VECO
Emitter-Collector Voltage
7
V
Collector Current
50
mA
PD1
IC
Input Power Dissipation(1)
145
mW
PD2
Transistor Power Dissipation(2)
85
mW
145
mW
PD3
Total Power
Dissipation(3)
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.
©2003 Fairchild Semiconductor Corporation
FOD2711 Rev. 1.0.1
www.fairchildsemi.com
3
FOD2711 — Optically Isolated Error Amplifier
Absolute Maximum Ratings (TA = 25°C unless otherwise specified)
Input Characteristics
Symbol
VF
VREF
Parameter
Test Conditions
LED Forward Voltage
ILED = 10mA, VCOMP = VFB (Fig. 1)
Reference Voltage
VCOMP = VFB, ILED = 10mA (Fig.1)
Min. Typ.* Max.
-40°C to +85°C
1.221
25°C
1.228
VREF (DEV) Deviation of VREF Over
Temperature(4)
∆VREF /
∆VCOMP
Unit
1.5
V
1.259
V
1.240
1.252
4
12
mV
TA = -40 to +85°C
Ratio of Vref Variation
to the Output of the Error
Amplifier
ILED = 10 mA, VCOMP = VREF to 12V
(Fig. 2)
-1.5
-2.7
mV/V
Feedback Input Current
ILED = 10mA, R1 = 10kΩ (Fig. 3)
0.15
0.5
µA
IREF (DEV)
Deviation of IREF Over
Temperature(4)
TA = -40°C to +85°C
0.15
0.3
µA
ILED (MIN)
Minimum Drive Current
VCOMP = VFB (Fig. 1)
55
80
µA
I(OFF)
Off-State Error Amplifier
Current
VLED = 6V, VFB = 0 (Fig. 4)
0.001
0.1
µA
Error Amplifier Output
Impedance(5)
VCOMP = VFB, ILED = 0.1mA to 15mA,
f<1 kHZ)
0.25
IREF
| ZOUT |
Ω
Output Characteristics
Symbol
ICEO
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
50
nA
Collector Dark Current
VCE = 10V (Fig. 5)
BVECO
Emitter-Collector Voltage Breakdown
IE = 100µA
7
V
BVCEO
Collector-Emitter Voltage Breakdown
IC = 1.0mA
70
V
Transfer Characteristics
Symbol Parameter
CTR
Current Transfer Ratio
VCE (SAT) Collector-Emitter Saturation
Voltage
Test Conditions
ILED = 10mA, VCOMP = VFB,
VCE = 5V (Fig. 6)
ILED = 10mA, VCOMP = VFB,
IC = 2.5mA (Fig. 6)
Min.
100
Typ.
Max.
Unit
200
%
0.4
V
Notes:
4. The deviation parameters VREF(DEV) and IREF(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, ∆VREF, is defined as:
6
{ V REF ( DEV ) /V REF ( T A = 25°C ) } × 10
∆V REF ( ppm/°C ) = ---------------------------------------------------------------------------------------------------∆T A
where ∆TA is the rated operating free-air temperature range of the device.
5. The dynamic impedance is defined as |ZOUT| = ∆VCOMP / ∆ILED. When the device is operating with two external
resistors (see Figure 2), the total dynamic impedance of the circuit is given by:
∆V
R1
Z OUT, TOT = -------- ≈ Z OUT × 1 + -------∆I
R2
©2003 Fairchild Semiconductor Corporation
FOD2711 Rev. 1.0.1
www.fairchildsemi.com
4
FOD2711 — Optically Isolated Error Amplifier
Electrical Characteristics (TA = 25°C unless otherwise specified)
Isolation Characteristics
Symbol
II-O
Parameter
Test Conditions
Input-Output Insulation
Leakage Current
RH = 45%, TA = 25°C, t = 5s,
VI-O = 3000 VDC(6)
VISO
Withstand Insulation
Voltage
RH ≤ 50%, TA = 25°C, t = 1 min.(6)
RI-O
Resistance (Input to Output)
VI-O = 500 VDC(6)
Min.
Typ.
Max.
Unit
1.0
µA
5000
Vrms
Ω
1012
Switching Characteristics
Symbol
BW
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Bandwidth
(Fig. 7)
10
kHZ
CMH
Common Mode Transient
Immunity at Output HIGH
ILED = 0mA, Vcm = 10 VPP,
RL = 2.2kΩ(7) (Fig. 8)
1.0
kV/µs
CML
Common Mode Transient
Immunity at Output LOW
ILED = 1mA, Vcm = 10 VPP,
RL = 2.2kΩ(7) (Fig. 8)
1.0
kV/µs
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.
©2003 Fairchild Semiconductor Corporation
FOD2711 Rev. 1.0.1
www.fairchildsemi.com
5
FOD2711 — Optically Isolated Error Amplifier
Electrical Characteristics (Continued) (TA = 25°C unless otherwise specified)
I(LED)
I(LED)
8
2
2
8
VF
6
6
V
7
V
R1
3
3
7
VCOMP
VREF
VREF
R2
5
5
Figure 2. ∆VREF / ∆VCOMP Test Circuit
Figure 1. VREF, VF, ILED (min.) Test Circuit
I(LED)
I(OFF)
8
2
8
2
IREF
6
6
3
7
V
3
V(LED)
7
V
R1
5
5
Figure 3. IREF Test Circuit
8
Figure 4. I(OFF) Test Circuit
I(LED)
ICEO
8
2
VCE
6
IC
2
VCE
6
3
7
V
3
7
VCOMP
VREF
5
5
Figure 5. ICEO Test Circuit
©2003 Fairchild Semiconductor Corporation
FOD2711 Rev. 1.0.1
Figure 6. CTR, VCE(sat) Test Circuit
www.fairchildsemi.com
6
FOD2711 — Optically Isolated Error Amplifier
Test Circuits
FOD2711 — Optically Isolated Error Amplifier
Test Circuits (Continued)
VCC = +5V DC
IF = 10mA
RL
47Ω
8
1
1µf
VOUT
7
2
VIN
0.47V
0.1 VPP
3
6
4
5
Figure 7. Frequency Response Test Circuit
VCC = +5V DC
IF = 0mA (A)
IF = 10mA (B)
R1
2.2kΩ
VOUT
1
8
2
7
3
6
4
5
_
A B
VCM
+
10VP-P
Figure 8. CMH and CML Test Circuit
©2003 Fairchild Semiconductor Corporation
FOD2711 Rev. 1.0.1
www.fairchildsemi.com
7
Fig. 9a LED Current vs. Cathode Voltage
Fig. 9b LED Current vs. Cathode Voltage
15
150
TA = 25°C
VCOMP = VFB
TA = 25°C
VCOMP = VFB
ILED – SUPPLY CURRENT (mA)
ILED – SUPPLY CURRENT (mA)
10
5
0
-5
-10
-15
-1.0
100
50
0
-50
-100
-150
-0.5
0.0
0.5
1.0
1.5
-1
0
1
VCOMP – CATHODE VOLTAGE (V)
VCOMP – CATHODE VOLTAGE (V)
Fig. 10 Reference Voltage vs. Ambient Temperature
2
Fig. 11 Reference Current vs. Ambient Temperature
280
ILED = 10mA
IREF – REFERENCE CURRENT (nA)
VREF – REFERENCE VOLTAGE (V)
1.244
1.242
1.240
1.238
1.236
1.234
1.232
1.230
-40
-20
0
20
40
60
80
260
240
220
200
180
160
140
120
-40
100
ILED = 10mA
R1 = 10 kΩ
-20
0
TA – AMBIENT TEMPERATURE (°C)
60
80
100
20
VCC = 13.2V
IF – FORWARD CURRENT (mA)
IOFF – OFF-STATE CURRENT (NA)
40
Fig. 13 Forward Current vs. Forward Voltage
Fig. 12 Off-State Current vs. Ambient Temperature
1000
20
TA – AMBIENT TEMPERATURE (°C)
100
10
1
15
25°C
10
70°C
0°C
5
0.1
-40
-20
0
20
40
60
80
0.9
100
TA – AMBIENT TEMPERATURE (°C)
©2003 Fairchild Semiconductor Corporation
FOD2711 Rev. 1.0.1
1.0
1.1
1.2
1.3
1.4
VF – FORWARD VOLTAGE (V)
www.fairchildsemi.com
8
FOD2711 — Optically Isolated Error Amplifier
Typical Performance Curves
Fig. 15 Collector Current vs. Ambient Temperature
Fig. 14 Dark Current vs. Ambient Temperature
10000
30
VCE = 5V
IC – COLLECTOR CURRENT (mA)
ICEO – DARK CURRENT (nA)
VCE = 10V
1000
100
10
1
25
ILED = 20mA
20
15
ILED = 10mA
10
ILED = 5mA
5
ILED = 1mA
0.1
-40
-20
0
20
40
60
80
0
100
0
10
20
TA – AMBIENT TEMPERATURE (°C)
30
40
50
60
70
80
90
100
TA – AMBIENT TEMPERATURE (°C)
Fig. 17 Saturation Voltage vs. Ambient Temperature
Fig. 16 Current Transfer Ratio vs. LED Current
VCE = 5V
VCE(SAT) – SATURATION VOLTAGE (V)
(IC/IF) – CURRENT TRANSFER RATIO (%)
0.26
140
120
0°C
100
25°C
80
70°C
60
40
0
5
10
15
20
25
30
35
40
45
0.24
0.22
0.20
0.18
0.16
0.14
0.12
0.10
-40
50
-20
0
20
40
60
80
100
TA – AMBIENT TEMPERATURE (°C)
ILED – FORWARD CURRENT (mA)
Fig. 19 Rate of Change Vref to Vcomp vs. Temperature
Fig. 18 Collector Current vs. Collector Voltage
35
DELTA VREF / DELTA VCOMP ( mV/V)
IC – COLLECTOR CURRENT (mA)
T A = 25°C
30
ILED = 20mA
25
20
ILED = 10mA
15
10
ILED = 5mA
5
ILED = 1mA
-0.2
-0.4
-0.6
-0.8
-1.0
-1.2
-1.4
-1.6
0
0
1
2
3
4
5
6
7
8
9
-60
10
©2003 Fairchild Semiconductor Corporation
FOD2711 Rev. 1.0.1
-40
-20
0
20
40
60
80
100
120
TEMPERATURE (°C)
VCE – COLLECTOR-EMITTER VOLTAGE (V)
www.fairchildsemi.com
9
FOD2711 — Optically Isolated Error Amplifier
Typical Performance Curves (Continued)
FOD2711 — Optically Isolated Error Amplifier
Typical Performance Curves (Continued)
Fig. 20 Voltage Gain vs. Frequency
VCC = 10V
IF = 10mA
VOLTAGE GAIN (dB)
0
RL = 100Ω
-5
-10
RL = 1kΩ
RL = 500Ω
-15
0.1
1
10
100
1000
FREQUENCY (kHZ)
©2003 Fairchild Semiconductor Corporation
FOD2711 Rev. 1.0.1
www.fairchildsemi.com
10
Compensation
The FOD2711 is an optically isolated error amplifier. It
incorporates three of the most common elements necessary to make an isolated power supply, a reference voltage, an error amplifier, and an optocoupler. It is
functionally equivalent to the popular RC431A shunt voltage regulator plus the CNY17F-3 optocoupler.
The compensation pin of the FOD2711 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 requirements, a network should be designed based on measurements 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.
Powering the Secondary Side
The LED pin in the FOD2711 powers the secondary
side, and in particular provides the current to run the
LED. The actual structure of the FOD2711 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 voltage 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 regulation, as the input to the FB pin may still be taken from the
output winding.
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.
The LED pin needs to be fed through a current limiting
resistor. The value of the resistor sets the amount of current through the LED, and thus must be carefully
selected in conjunction with the selection of the primary
side resistor.
Photo-Transistor
Feedback
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.
The Photo-transistor is the output of the FOD2711. In a
normal configuration the collector will be attached to a
pull-up resistor and the emitter grounded. There is no
base connection necessary.
Output voltage of a converter is determined by selecting
a resistor divider from the regulated output to the FB pin.
The FOD2711 attempts to regulate its FB pin to the
reference voltage, 1.24V. The ratio of the two resistors
should thus be:
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 reference. If we select a 10KΩ resistor for the LED, the
maximum current the LED can see is:
R TOP
V OUT
------------------------- = -------------–1
R BOTTOM
V REF
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:
(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:
V OUT – 1.24
------------------------------- > 80µA
R TOP
10V – 5V
----------------------------------- < 926µA or R COLLECTOR > 5.4KΩ;
R COLLECTOR
select 10kΩ to allow some margin.
©2003 Fairchild Semiconductor Corporation
FOD2711 Rev. 1.0.1
www.fairchildsemi.com
11
FOD2711 — Optically Isolated Error Amplifier
The FOD2711
Through Hole
0.4" Lead Spacing
PIN 1
ID.
4
3
2
PIN 1
ID.
1
4
3
2
1
0.270 (6.86)
0.250 (6.35)
5
6
7
0.270 (6.86)
0.250 (6.35)
8
5
6
0.070 (1.78)
0.045 (1.14)
0.020 (0.51) MIN
0.200 (5.08)
0.140 (3.55)
0.154 (3.90)
0.120 (3.05)
0.022 (0.56)
0.016 (0.41)
7
8
0.390 (9.91)
0.370 (9.40)
SEATING PLANE
SEATING PLANE
0.390 (9.91)
0.370 (9.40)
0.016 (0.40)
0.008 (0.20)
0.100 (2.54) TYP
0.070 (1.78)
0.045 (1.14)
0.004 (0.10) MIN
0.200 (5.08)
0.140 (3.55)
15° MAX
0.154 (3.90)
0.120 (3.05)
0.300 (7.62)
TYP
0.022 (0.56)
0.016 (0.41)
0.016 (0.40)
0.008 (0.20)
0.100 (2.54) TYP
Surface Mount
0° to 15°
0.400 (10.16)
TYP
8-Pin DIP – Land Pattern
0.390 (9.91)
0.370 (9.40)
4
3
2
1
0.070 (1.78)
PIN 1
ID.
0.060 (1.52)
0.270 (6.86)
0.250 (6.35)
5
6
7
0.100 (2.54)
8
0.295 (7.49)
0.070 (1.78)
0.045 (1.14)
0.020 (0.51)
MIN
0.022 (0.56)
0.016 (0.41)
0.100 (2.54)
TYP
Lead Coplanarity : 0.004 (0.10) MAX
0.415 (10.54)
0.300 (7.62)
TYP
0.030 (0.76)
0.016 (0.41)
0.008 (0.20)
0.045 (1.14)
0.315 (8.00)
MIN
0.405 (10.30)
MAX.
Note:
All dimensions are in inches (millimeters)
©2003 Fairchild Semiconductor Corporation
FOD2711 Rev. 1.0.1
www.fairchildsemi.com
12
FOD2711 — Optically Isolated Error Amplifier
Package Dimensions
Option
Example Part Number
Description
No Option
FOD2711A
S
FOD2711AS
SD
FOD2711ASD
T
FOD2711AT
0.4" Lead Spacing
V
FOD2711AV
VDE0884
TV
FOD2711ATV
VDE0884; 0.4” Lead Spacing
SV
FOD2711ASV
VDE0884; Surface Mount
SDV
FOD2711ASDV
Standard Through Hole
Surface Mount Lead Bend
Surface Mount; Tape and Reel
VDE0884; Surface Mount; Tape and Reel
Marking Information
1
V
3
2711
2
XX YY B
6
4
5
Definitions
1
Fairchild logo
2
Device number
3
VDE mark (Note: Only appears on parts ordered with VDE
option – See order entry table)
4
Two digit year code, e.g., ‘03’
5
Two digit work week ranging from ‘01’ to ‘53’
6
Assembly package code
©2003 Fairchild Semiconductor Corporation
FOD2711 Rev. 1.0.1
www.fairchildsemi.com
13
FOD2711 — Optically Isolated Error Amplifier
Ordering Information
D0
P0
t
K0
P2
E
F
A0
W1
W
B0
P
User Direction of Feed
d
Symbol
Description
W
t
D1
Dimension in mm
Tape Width
16.0 ± 0.3
Tape Thickness
0.30 ± 0.05
P0
Sprocket Hole Pitch
4.0 ± 0.1
D0
Sprocket Hole Diameter
1.55 ± 0.05
E
Sprocket Hole Location
1.75 ± 0.10
F
Pocket Location
7.5 ± 0.1
4.0 ± 0.1
P2
P
Pocket Pitch
12.0 ± 0.1
A0
Pocket Dimensions
10.30 ±0.20
B0
10.30 ±0.20
K0
4.90 ±0.20
W1
d
R
Cover Tape Width
1.6 ± 0.1
Cover Tape Thickness
0.1 max
Max. Component Rotation or Tilt
10°
Min. Bending Radius
30
Reflow Profile
245 C, 10–30 s
Temperature (°C)
300
260 C peak
250
200
150
Time above 183C, <160 sec
100
50
Ramp up = 2–10C/sec
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
Time (Minute)
• 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
©2003 Fairchild Semiconductor Corporation
FOD2711 Rev. 1.0.1
www.fairchildsemi.com
14
FOD2711 — Optically Isolated Error Amplifier
Carrier Tape Specifications
PDP SPM™
Power-SPM™
PowerTrench®
Programmable Active Droop™
QFET®
QS™
Quiet Series™
RapidConfigure™
Saving our world, 1mW at a time™
SmartMax™
SMART START™
SPM®
STEALTH™
SuperFET™
SuperSOT™-3
SuperSOT™-6
SuperSOT™-8
SupreMOS™
SyncFET™
FPS™
F-PFS™
FRFET®
SM
Global Power Resource
Green FPS™
Green FPS™e-Series™
GTO™
IntelliMAX™
ISOPLANAR™
MegaBuck™
MICROCOUPLER™
MicroFET™
MicroPak™
MillerDrive™
MotionMax™
Motion-SPM™
OPTOLOGIC®
OPTOPLANAR®
Build it Now™
CorePLUS™
CorePOWER™
CROSSVOLT™
CTL™
Current Transfer Logic™
EcoSPARK®
EfficentMax™
EZSWITCH™ *
™
®
Fairchild®
®
Fairchild Semiconductor
FACT Quiet Series™
FACT®
FAST®
FastvCore™
FlashWriter® *
®
®
The Power Franchise
TinyBoost™
TinyBuck™
®
TinyLogic
TINYOPTO™
TinyPower™
TinyPWM™
TinyWire™
µSerDes™
UHC®
Ultra FRFET™
UniFET™
VCX™
VisualMax™
®
* EZSWITCH™ and FlashWriter® are 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 customers from the 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 Fairchild Distributors 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
Advance Information
Formative / In Design
Preliminary
First Production
No Identification Needed
Full Production
Obsolete
Not In Production
Definition
Datasheet contains the design specifications for product development. Specifications may change in
any manner without notice.
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.
Datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes
at any time without notice to improve the design.
Datasheet contains specifications on a product that is discontinued by Fairchild Semiconductor. The
datasheet is for reference information only.
Rev. I35
©2003 Fairchild Semiconductor Corporation
FOD2711 Rev. 1.0.1
www.fairchildsemi.com
15
FOD2711 — Optically Isolated Error Amplifier
TRADEMARKS
The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidiaries, and is not
intended to be an exhaustive list of all such trademarks.