LM6171AIM [ROCHESTER]
Video Amplifier, 1 Channel(s), 1 Func, Bipolar, PDSO8, SO-8;
| 型号： | LM6171AIM |
| 厂家： | 
Rochester Electronics |
| 描述： | Video Amplifier, 1 Channel(s), 1 Func, Bipolar, PDSO8, SO-8 放大器 光电二极管 商用集成电路 |
| 文件： | 总22页 (文件大小：1519K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
February 2003
LM6171
High Speed Low Power Low Distortion Voltage Feedback
Amplifier
General Description
Features
The LM6171 is a high speed unity-gain stable voltage feed-
back amplifier. It offers a high slew rate of 3600V/µs and a
unity-gain bandwidth of 100 MHz while consuming only 2.5
mA of supply current. The LM6171 has very impressive AC
and DC performance which is a great benefit for high speed
signal processing and video applications.
(Typical Unless Otherwise Noted)
n Easy-To-Use Voltage Feedback Topology
n Very High Slew Rate: 3600V/µs
n Wide Unity-Gain-Bandwidth Product: 100 MHz
n −3dB Frequency AV = +2: 62 MHz
n Low Supply Current: 2.5 mA
n High CMRR: 110 dB
@
The 15V power supplies allow for large signal swings and
give greater dynamic range and signal-to-noise ratio. The
LM6171 has high output current drive, low SFDR and THD,
ideal for ADC/DAC systems. The LM6171 is specified for
5V operation for portable applications.
n High Open Loop Gain: 90 dB
n Specified for 15V and 5V Operation
Applications
™
The LM6171 is built on National’s advanced VIP III (Verti-
cally Integrated PNP) complementary bipolar process.
n Multimedia Broadcast Systems
n Line Drivers, Switchers
n Video Amplifiers
n NTSC, PAL® and SECAM Systems
n ADC/DAC Buffers
n HDTV Amplifiers
n Pulse Amplifiers and Peak Detectors
n Instrumentation Amplifier
n Active Filters
Typical Performance Characteristics
Closed Loop Frequency Responsevs. Supply Voltage
(AV = +1)
Large Signal Pulse Response
AV = +1, VS
=
15
01233609
01233605
™
VIP is a trademark of National Semiconductor Corporation.
PAL® is a registered trademark of and used under licence from Advanced Micro Devices, Inc.
© 2003 National Semiconductor Corporation
DS012336
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Connection Diagram
8-Pin DIP/SO
01233601
Top View
Ordering Information
Package
Temperature Range
Transport Media
NSC Drawing
Industrial
−40˚C to +85˚C
8-Pin
LM6171AIN
Rails
N08E
M08A
Molded DIP
8-Pin
LM6171BIN
LM6171AIM, LM6171BIM
LM6171AIMX, LM6171BIMX
Rails
Small Outline
2.5k Units Tape and Reel
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2
Absolute Maximum Ratings (Note 1)
Soldering Information
Infrared or Convection Reflow
(20 sec.)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
235˚C
260˚C
Wave Soldering Lead Temp
(10 sec.)
ESD Tolerance (Note 2)
Supply Voltage (V+–V−)
Differential Input Voltage
Common-Mode Voltage Range
Input Current
2.5 kV
36V
10V
Operating Ratings (Note 1)
Supply Voltage
V++0.3V to V− −0.3V
10mA
5.5V ≤ VS ≤ 34V
Operating Temperature Range
LM6171AI, LM6171BI
Output Short Circuit to Ground
(Note 3)
−40˚C to +85˚C
Continuous
Thermal Resistance (θJA
)
Storage Temperature Range
Maximum Junction Temperature
(Note 4)
−65˚C to +150˚C
N Package, 8-Pin Molded DIP
108˚C/W
172˚C/W
M Package, 8-Pin Surface Mount
150˚C
15V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = +15V, V− = −15V, VCM = 0V, and RL = 1 kΩ. Boldface
limits apply at the temperature extremes
Typ
LM6171AI
LM6171BI
Symbol
Parameter
Input Offset Voltage
Conditions
(Note 5)
Limit
Limit
Units
(Note 6)
(Note 6)
VOS
1.5
3
6
mV
max
µV/˚C
µA
5
8
TC VOS
IB
Input Offset Voltage Average Drift
Input Bias Current
6
1
3
4
2
3
3
4
2
3
max
µA
IOS
Input Offset Current
Input Resistance
0.03
max
MΩ
RIN
Common Mode
40
4.9
14
Differential Mode
RO
Open Loop
Ω
Output Resistance
Common Mode
Rejection Ratio
Power Supply
CMRR
PSRR
VCM
AV
VCM
VS
=
10V
110
95
80
75
85
80
75
70
80
75
dB
min
dB
min
V
=
15V to 5V
Rejection Ratio
Input Common-Mode
Voltage Range
Large Signal Voltage
Gain (Note 7)
CMRR ≥ 60 dB
RL = 1 kΩ
13.5
90
80
70
80
70
dB
min
dB
min
V
RL = 100Ω
RL = 1 kΩ
83
70
70
60
60
VO
Output Swing
13.3
−13.3
11.6
−10.5
116
12.5
12
12.5
12
min
V
−12.5
−12
9
−12.5
−12
9
max
V
RL = 100Ω
8.5
−9
8.5
−9
min
V
−8.5
90
−8.5
90
max
mA
min
Continuous Output Current
(Open Loop) (Note 8)
Sourcing, RL = 100Ω
85
85
3
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15V DC Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = +15V, V− = −15V, VCM = 0V, and RL = 1 kΩ. Boldface
limits apply at the temperature extremes
Typ
LM6171AI
Limit
(Note 6)
90
LM6171BI
Limit
(Note 6)
90
Symbol
Parameter
Conditions
(Note 5)
Units
Sinking, RL = 100Ω
105
mA
max
mA
mA
mA
mA
mA
max
85
85
Continuous Output Current
(in Linear Region)
Output Short
Sourcing, RL = 10Ω
Sinking, RL = 10Ω
Sourcing
100
80
ISC
IS
135
135
2.5
Circuit Current
Sinking
Supply Current
4
4
4.5
4.5
15V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = +15V, V− = −15V, VCM = 0V, and RL = 1 kΩ. Boldface
limits apply at the temperature extremes
Typ
LM6171AI LM6171BI
Symbol
SR
Parameter
Slew Rate (Note 9)
Conditions
(Note 5)
Limit
Limit
Units
(Note 6)
(Note 6)
AV = +2, VIN = 13 VPP
AV = +2, VIN = 10 VPP
3600
3000
100
160
62
V/µs
GBW
Unity Gain-Bandwidth Product
−3 dB Frequency
MHz
MHz
MHz
deg
ns
AV = +1
AV = +2
φm
Phase Margin
40
ts
Settling Time (0.1%)
AV = −1, VOUT
=
5V
48
RL = 500Ω
Propagation Delay
VIN
=
5V, RL = 500Ω,
6
ns
AV = −2
AD
φD
en
Differential Gain (Note 10)
Differential Phase (Note 10)
Input-Referred
0.03
0.5
12
%
deg
f = 1 kHz
f = 1 kHz
Voltage Noise
Input-Referred
Current Noise
in
1
5V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = +5V, V− = −5V, VCM = 0V, and RL = 1 kΩ. Boldface lim-
its apply at the temperature extremes
Typ
LM6171AI
LM6171BI
Symbol
VOS
TC VOS
IB
Parameter
Conditions
(Note 5)
Limit
Limit
Units
(Note 6)
(Note 6)
Input Offset Voltage
1.2
4
3
6
mV
max
5
8
Input Offset Voltage
Average Drift
µV/˚C
Input Bias Current
1
2.5
3.5
1.5
2.5
3.5
1.5
µA
max
µA
IOS
Input Offset Current
0.03
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4
5V DC Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = +5V, V− = −5V, VCM = 0V, and RL = 1 kΩ. Boldface lim-
its apply at the temperature extremes
Typ
LM6171AI
Limit
LM6171BI
Limit
Symbol
Parameter
Conditions
(Note 5)
Units
(Note 6)
2.2
(Note 6)
2.2
max
RIN
Input Resistance
Common Mode
40
4.9
14
MΩ
Differential Mode
RO
Open Loop
Ω
Output Resistance
Common Mode
Rejection Ratio
Power Supply
CMRR
PSRR
VCM
AV
VCM
VS
=
2.5V
105
95
80
75
85
80
75
70
80
75
dB
min
dB
min
V
=
15V to 5V
Rejection Ratio
Input Common-Mode
Voltage Range
Large Signal Voltage
Gain (Note 7)
CMRR ≥ 60 dB
RL = 1 kΩ
3.7
84
75
65
75
65
dB
min
dB
RL = 100Ω
RL = 1 kΩ
80
70
70
60
60
min
V
VO
Output Swing
3.5
−3.4
3.2
−3.0
32
3.2
3
3.2
3
min
V
−3.2
−3
−3.2
−3
max
V
RL = 100Ω
2.8
2.5
−2.8
−2.5
28
2.8
2.5
−2.8
−2.5
28
min
V
max
mA
min
mA
max
mA
mA
mA
max
Continuous Output Current
(Open Loop) (Note 8)
Sourcing, RL = 100Ω
Sinking, RL = 100Ω
25
25
30
28
28
25
25
ISC
IS
Output Short
Sourcing
Sinking
130
100
2.3
Circuit Current
Supply Current
3
3
3.5
3.5
5V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = +5V, V− = −5V, VCM = 0V, and RL = 1 kΩ. Boldface
limits apply at the temperature extremes
Typ
LM6171AI LM6171BI
Symbol
Parameter
Slew Rate (Note 9)
Conditions
(Note 5)
Limit
Limit
Units
(Note 6)
(Note 6)
SR
AV = +2, VIN = 3.5 VPP
750
70
V/µs
MHz
GBW
Unity Gain-Bandwidth
Product
−3 dB Frequency
AV = +1
AV = +2
130
45
MHz
φm
Phase Margin
57
deg
ns
ts
Settling Time (0.1%)
AV = −1, VOUT = +1V,
60
RL = 500Ω
5
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5V AC Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = +5V, V− = −5V, VCM = 0V, and RL = 1 kΩ. Boldface
limits apply at the temperature extremes
Typ
LM6171AI LM6171BI
Symbol
Parameter
Propagation Delay
Conditions
(Note 5)
Limit
Limit
Units
(Note 6)
(Note 6)
VIN
=
1V, RL = 500Ω,
8
ns
AV = −2
AD
φD
en
Differential Gain (Note 10)
Differential Phase (Note 10)
Input-Referred
0.04
0.7
11
%
deg
f = 1 kHz
f = 1 kHz
Voltage Noise
Input-Referred
Current Noise
in
1
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Human body model, 1.5 kΩ in series with 100 pF.
Note 3: Continuous short circuit operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature of 150˚C.
Note 4: The maximum power dissipation is a function of T
, θ , and T . The maximum allowable power dissipation at any ambient temperature is P =
A D
J(max) JA
(T
− T )/θ . All numbers apply for packages soldered directly into a PC board.
J(max)
A JA
Note 5: Typical Values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: Large signal voltage gain is the total output swing divided by the input signal required to produce that swing. For V
=
15V, V
=
5V. For V = +5V,
S
S
OUT
V
=
1V.
OUT
Note 8: The open loop output current is the output swing with the 100Ω load resistor divided by that resistor.
Note 9: Slew rate is the average of the rising and falling slew rates.
Note 10: Differential gain and phase are measured with A = +2, V = 1 V at 3.58 MHz and both input and output 75Ω terminated.
V
IN
PP
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6
Typical Performance Characteristics Unless otherwise noted, TA = 25˚C
Supply Current vs. Supply Voltage
Supply Current vs. Temperature
01233620
01233621
Input Offset Voltage vs. Temperature
Input Bias Current vs. Temperature
01233622
01233623
Input Offset Voltage vs. Common Mode Voltage
Short Circuit Current vs. Temperature (Sourcing)
01233625
01233624
7
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Typical Performance Characteristics Unless otherwise noted, TA = 25˚C (Continued)
Short Circuit Current vs. Temperature (Sinking)
Output Voltage vs. Output Current
01233626
01233627
Output Voltage vs. Output Current
CMRR vs. Frequency
01233629
01233628
PSRR vs. Frequency
PSRR vs. Frequency
01233630
01233631
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8
Typical Performance Characteristics Unless otherwise noted, TA = 25˚C (Continued)
Open Loop Frequency Response
Open Loop Frequency Response
01233632
01233633
Gain Bandwidth Product vs. Supply Voltage
Gain Bandwidth Product vs. Load Capacitance
01233635
01233634
Large Signal Voltage Gain vs. Load
Large Signal Voltage Gain vs. Load
01233636
01233637
9
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Typical Performance Characteristics Unless otherwise noted, TA = 25˚C (Continued)
Input Voltage Noise vs. Frequency
Input Voltage Noise vs. Frequency
01233638
01233639
Input Current Noise vs. Frequency
Input Current Noise vs. Frequency
01233640
01233641
Slew Rate vs. Supply Voltage
Slew Rate vs. Input Voltage
01233642
01233643
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10
Typical Performance Characteristics Unless otherwise noted, TA = 25˚C (Continued)
Slew Rate vs. Load Capacitance
Open Loop Output Impedance vs. Frequency
01233645
01233644
Large Signal Pulse Response
Open Loop Output Impedance vs. Frequency
AV = −1, VS
=
15V
01233647
01233646
Large Signal Pulse Response
Large Signal Pulse Response
AV = +1, VS 15V
AV = −1, VS
=
5V
=
01233648
01233649
11
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Typical Performance Characteristics Unless otherwise noted, TA = 25˚C (Continued)
Large Signal Pulse Response
AV = +1, VS 5V
Large Signal Pulse Response
AV = +2, VS 15V
=
=
01233650
01233651
Large Signal Pulse Response
AV = +2, VS 5V
Small Signal Pulse Response
AV = −1, VS 15V
=
=
01233652
01233653
Small Signal Pulse Response
AV = −1, VS 5V
Small Signal Pulse Response
AV = +1, VS 15V
=
=
01233654
01233655
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12
Typical Performance Characteristics Unless otherwise noted, TA = 25˚C (Continued)
Small Signal Pulse Response
AV = +1, VS 5V
Small Signal Pulse Response
AV = +2, VS 15V
=
=
01233656
01233657
Small Signal Pulse Response
AV = +2, VS 5V
Closed Loop Frequency Response vs. SupplyVoltage
(AV = +1)
=
01233658
01233659
Closed Loop Frequency Response vs. Supply Voltage
(AV = +2)
Closed Loop Frequency Response vs. Capacitive Load
(AV = +1)
01233660
01233661
13
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Typical Performance Characteristics Unless otherwise noted, TA = 25˚C (Continued)
Closed Loop Frequency Response vs. Capacitive Load
(AV = +1)
Closed Loop Frequency Response vs. Capacitive Load
(AV = +2)
01233662
01233663
Closed Loop Frequency Response vs. Capacitive Load
(AV = +2)
Total Harmonic Distortion vs. Frequency
01233664
01233665
Total Harmonic Distortion vs. Frequency
Total Harmonic Distortion vs. Frequency
01233666
01233667
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14
Typical Performance Characteristics Unless otherwise noted, TA = 25˚C (Continued)
Total Harmonic Distortion vs. Frequency
Undistorted Output Swing vs. Frequency
01233668
01233669
Undistorted Output Swing vs. Frequency
Undistorted Output Swing vs. Frequency
01233670
01233671
Undistorted Output Swing vs. Frequency
Total Power Dissipation vs. Ambient Temperature
01233673
01233672
15
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LM6171 Simplified Schematic
01233610
Application Information
LM6171 PERFORMANCE DISCUSSION
When a very fast large signal pulse is applied to the input of
an amplifier, some overshoot or undershoot occurs. By plac-
ing an external series resistor such as 1 kΩ to the input of
LM6171, the bandwidth is reduced to help lower the over-
shoot.
The LM6171 is a high speed, unity-gain stable voltage feed-
back amplifier. It consumes only 2.5 mA supply current while
providing a gain-bandwidth product of 100 MHz and a slew
rate of 3600V/µs. It also has other great features such as low
differential gain and phase and high output current. The
LM6171 is a good choice in high speed circuits.
LAYOUT CONSIDERATION
The LM6171 is a true voltage feedback amplifier. Unlike
current feedback amplifiers (CFAs) with a low inverting input
impedance and a high non-inverting input impedance, both
inputs of voltage feedback amplifiers (VFAs) have high im-
pedance nodes. The low impedance inverting input in CFAs
will couple with feedback capacitor and cause oscillation. As
a result, CFAs cannot be used in traditional op amp circuits
such as photodiode amplifiers, I-to-V converters and integra-
tors.
Printed Circuit Boards and High Speed Op Amps
There are many things to consider when designing PC
boards for high speed op amps. Without proper caution, it is
very easy and frustrating to have excessive ringing, oscilla-
tion and other degraded AC performance in high speed
circuits. As a rule, the signal traces should be short and wide
to provide low inductance and low impedance paths. Any
unused board space needs to be grounded to reduce stray
signal pickup. Critical components should also be grounded
at a common point to eliminate voltage drop. Sockets add
capacitance to the board and can affect frequency perfor-
mance. It is better to solder the amplifier directly into the PC
board without using any socket.
LM6171 CIRCUIT OPERATION
The class AB input stage in LM6171 is fully symmetrical and
has a similar slewing characteristic to the current feedback
amplifiers. In the LM6171 Simplfied Schematic, Q1 through
Q4 form the equivalent of the current feedback input buffer,
RE the equivalent of the feedback resistor, and stage A
buffers the inverting input. The triple-buffered output stage
isolates the gain stage from the load to provide low output
impedance.
Using Probes
Active (FET) probes are ideal for taking high frequency
measurements because they have wide bandwidth, high
input impedance and low input capacitance. However, the
probe ground leads provide a long ground loop that will
produce errors in measurement. Instead, the probes can be
grounded directly by removing the ground leads and probe
jackets and using scope probe jacks.
LM6171 SLEW RATE CHARACTERISTIC
The slew rate of LM6171 is determined by the current avail-
able to charge and discharge an internal high impedance
node capacitor. The current is the differential input voltage
divided by the total degeneration resistor RE. Therefore, the
slew rate is proportional to the input voltage level, and the
higher slew rates are achievable in the lower gain configu-
rations.
Components Selection And Feedback Resistor
It is important in high speed applications to keep all compo-
nent leads short because wires are inductive at high fre-
quency. For discrete components, choose carbon
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16
Application Information (Continued)
TERMINATION
composition-type resistors and mica-type capacitors. Sur-
face mount components are preferred over discrete compo-
nents for minimum inductive effect.
In high frequency applications, reflections occur if signals
are not properly terminated. Figure 3 shows a properly ter-
minated signal while Figure 4 shows an improperly termi-
nated signal.
Large values of feedback resistors can couple with parasitic
capacitance and cause undesirable effects such as ringing
or oscillation in high speed amplifiers. For LM6171, a feed-
back resistor of 510Ω gives optimal performance.
COMPENSATION FOR INPUT CAPACITANCE
The combination of an amplifier’s input capacitance with the
gain setting resistors adds a pole that can cause peaking or
oscillation. To solve this problem, a feedback capacitor with
a value
>
CF (RG x CIN)/RF
can be used to cancel that pole. For LM6171, a feedback
capacitor of 2 pF is recommended. Figure 1 illustrates the
compensation circuit.
01233614
FIGURE 3. Properly Terminated Signal
01233611
FIGURE 1. Compensating for Input Capacitance
POWER SUPPLY BYPASSING
Bypassing the power supply is necessary to maintain low
power supply impedance across frequency. Both positive
and negative power supplies should be bypassed individu-
ally by placing 0.01 µF ceramic capacitors directly to power
supply pins and 2.2 µF tantalum capacitors close to the
power supply pins.
01233615
FIGURE 4. Improperly Terminated Signal
01233612
FIGURE 2. Power Supply Bypassing
17
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For example, for the LM6171 in a SO-8 package, the maxi-
mum power dissipation at 25˚C ambient temperature is
730 mW.
Application Information (Continued)
To minimize reflection, coaxial cable with matching charac-
teristic impedance to the signal source should be used. The
other end of the cable should be terminated with the same
value terminator or resistor. For the commonly used cables,
RG59 has 75Ω characteristic impedance, and RG58 has
50Ω characteristic impedance.
Thermal resistance, θJA, depends on parameters such as
die size, package size and package material. The smaller
the die size and package, the higher θJA becomes. The 8-pin
DIP package has a lower thermal resistance (108˚C/W) than
that of 8-pin SO (172˚C/W). Therefore, for higher dissipation
capability, use an 8-pin DIP package.
DRIVING CAPACITIVE LOADS
The total power dissipated in a device can be calculated as:
PD = PQ + PL
Amplifiers driving capacitive loads can oscillate or have ring-
ing at the output. To eliminate oscillation or reduce ringing,
an isolation resistor can be placed as shown below in Figure
5. The combination of the isolation resistor and the load
capacitor forms a pole to increase stablility by adding more
phase margin to the overall system. The desired perfor-
mance depends on the value of the isolation resistor; the
bigger the isolation resistor, the more damped the pulse
response becomes. For LM6171, a 50Ω isolation resistor is
recommended for initial evaluation. Figure 6 shows the
LM6171 driving a 200 pF load with the 50Ω isolation resistor.
PQ is the quiescent power dissipated in a device with no load
connected at the output. PL is the power dissipated in the
device with a load connected at the output; it is not the power
dissipated by the load.
Furthermore,
PQ
PL
=
supply current x total supply voltage with no load
=
output current x (voltage difference between
supply voltage and output voltage of the same
supply)
For example, the total power dissipated by the LM6171 with
VS 15V and output voltage of 10V into 1 kΩ load resistor
=
(one end tied to ground) is
PD = PQ + PL
= (2.5 mA) x (30V) + (10 mA) x (15V − 10V)
= 75 mW + 50 mW
= 125 mW
01233613
APPLICATION CIRCUITS
FIGURE 5. Isolation Resistor Used
to Drive Capacitive Load
Fast Instrumentation Amplifier
01233617
01233616
FIGURE 6. The LM6171 Driving a 200 pF Load
with a 50Ω Isolation Resistor
POWER DISSIPATION
The maximum power allowed to dissipate in a device is
defined as:
PD = (TJ(max) − TA)/θJA
Where PD is the power dissipation in a device
TJ(max) is the maximum junction temperature
TA is the ambient temperature
θ
JA is the thermal resistance of a particular package
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18
Application Information (Continued)
Pulse Width Modulator
Multivibrator
01233619
01233618
DESIGN KIT
A design kit is available for the LM6171. The design kit
contains:
•
•
•
LM6171 in 8-pin DIP Package
LM6171 Datasheet
•
•
•
•
High Speed Evaluation Board
LM6171 in 8-pin DIP Package
LM6171 Datasheet
Pspice Macromodel Diskette With the LM6171 Macro-
model
Contact your local National Semiconductor sales office to
obtain a pitch pack.
Pspice Macromodel Diskette With the LM6171 Macro-
model
•
An Amplifier Selection Guide
PITCH PACK
A pitch pack is available for the LM6171. The pitch pack
contains:
•
High Speed Evaluation Board
19
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Physical Dimensions inches (millimeters) unless otherwise noted
8-Pin Small Outline Package
NS Package Number M08A
8-Pin Molded DIP Package
NS Package Number N08E
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20
Notes
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL 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
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 to the user.
2. A critical component is 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.
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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
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