LM2901MDCT - Texas Instruments High-Performance Analog

LM139/LM239/LM339/LM2901/LM3302

Low Power Low Offset Voltage Quad Comparators

General Description

The LM139 series consists of four independent precision

voltage comparators with an offset voltage specification as

low as 2 mV max for all four comparators. These were

designed specifically to operate from a single power supply

over a wide range of voltages. Operation from split power

supplies is also possible and the low power supply current

drain is independent of the magnitude of the power supply

voltage. These comparators also have a unique

characteristic in that the input common-mode voltage range

includes ground, even though operated from a single power

supply voltage.

Application areas include limit comparators, simple analog to

digital converters; pulse, squarewave and time delay

generators; wide range VCO; MOS clock timers;

multivibrators and high voltage digital logic gates. The

LM139 series was designed to directly interface with TTL

and CMOS. When operated from both plus and minus power

supplies, they will directly interface with MOS logic— where

the low power drain of the LM339 is a distinct advantage

over standard comparators.

Features

nWide supply voltage range

nLM139/139A Series 2 to 36 V

or ±1to±

18 V

nLM2901: 2 to 36 V

or ±1to±

18 V

nLM3302: 2 to 28 V

or ±1to±

14 V

nVery low supply current drain (0.8 mA) — independent

of supply voltage

nLow input biasing current: 25 nA

nLow input offset current: ±5nA

nOffset voltage: ±3mV

nInput common-mode voltage range includes GND

nDifferential input voltage range equal to the power

supply voltage

nLow output saturation voltage: 250 mV at 4 mA

nOutput voltage compatible with TTL, DTL, ECL, MOS

and CMOS logic systems

Advantages

nHigh precision comparators

nReduced V

drift over temperature

nEliminates need for dual supplies

nAllows sensing near GND

nCompatible with all forms of logic

nPower drain suitable for battery operation

One-Shot Multivibrator with Input Lock Out

DS005706-12

August 2000

LM139/LM239/LM339/LM2901/LM3302 Low Power Low Offset Voltage Quad Comparators

Absolute Maximum Ratings (Note 10)

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales

Office/Distributors for availability and specifications.

LM139/LM239/LM339

LM139A/LM239A/LM339A LM3302

LM2901

Supply Voltage, V

36 V

or ±18 V

28 V

or ±14 V

Differential Input Voltage (Note 8) 36 V

28 V

Input Voltage −0.3 V

to +36 V

−0.3 V

to +28 V

Input Current (V

<−0.3 V

(Note 3) 50 mA 50 mA

Power Dissipation (Note 1)

Molded DIP 1050 mW 1050 mW

Cavity DIP 1190 mW

Small Outline Package 760 mW

Output Short-Circuit to GND,

(Note 2) Continuous Continuous

Storage Temperature Range −65˚C to +150˚C −65˚C to +150˚C

Lead Temperature

(Soldering, 10 seconds) 260˚C 260˚C

Operating Temperature Range −40˚C to +85˚C

LM339/LM339A 0˚C to +70˚C

LM239/LM239A −25˚C to +85˚C

LM2901 −40˚C to +85˚C

LM139/LM139A −55˚C to +125˚C

Soldering Information

Dual-In-Line Package

Soldering (10 seconds) 260˚C 260˚C

Small Outline Package

Vapor Phase (60 seconds) 215˚C 215˚C

Infrared (15 seconds) 220˚C 220˚C

See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” for other methods of soldering surface mount

devices.

ESD rating (1.5 kΩin series with 100 pF) 600V 600V

Electrical Characteristics

=5 V

= 25˚C, unless otherwise stated)

Parameter Conditions LM139A LM239A, LM339A LM139 Units

Min Typ Max Min Typ Max Min Typ Max

Input Offset Voltage (Note 9) 1.0 2.0 1.0 2.0 2.0 5.0 mV

Input Bias Current I

IN(+)

or I

IN(−)

with Output in 25 100 25 250 25 100 nA

Linear Range, (Note 5), V

=0V

Input Offset Current I

IN(+)

−I

IN(−)

=0V 3.0 25 5.0 50 3.0 25 nA

Input Common-Mode V

=30 V

(LM3302, 0 V

−1.5 0 V

−1.5 V

Voltage Range V

=28 V

) (Note 6)

Supply Current R

=∞on all Comparators, 0.8 2.0 0.8 2.0 0.8 2.0 mA

=∞,V

=36V, 1.0 2.5 1.0 2.5 mA

(LM3302, V

=28 V

)

Voltage Gain R

≥15 kΩ,V

=15 V

50 200 50 200 50 200 V/mV

=1V

to 11 V

Large Signal V

=TTL Logic Swing, V

REF

= 300 300 300 ns

Response Time 1.4 V

=5 V

=5.1 kΩ

Response Time V

=5 V

=5.1 kΩ, 1.3 1.3 1.3 µs

(Note 7)

LM139/LM239/LM339/LM2901/LM3302

www.national.com 2

Electrical Characteristics (Continued)

=5 V

= 25˚C, unless otherwise stated)

Parameter Conditions LM139A LM239A, LM339A LM139 Units

Min Typ Max Min Typ Max Min Typ Max

Output Sink Current V

IN(−)

=1 V

IN(+)

=0, 6.0 16 6.0 16 6.0 16 mA

≤1.5 V

Saturation Voltage V

IN(−)

=1 V

IN(+)

=0, 250 400 250 400 250 400 mV

SINK

≤4mA

Output Leakage V

IN(+)

=1 V

IN(−)

=0, 0.1 0.1 0.1 nA

Current V

=5 V

Electrical Characteristics

=5 V

= 25˚C, unless otherwise stated)

Parameter Conditions LM239, LM339 LM2901 LM3302 Units

Min Typ Max Min Typ Max Min Typ Max

Input Offset Voltage (Note 9) 2.0 5.0 2.0 7.0 3 20 mV

Input Bias Current I

IN(+)

or I

IN(−)

with Output in 25 250 25 250 25 500 nA

Linear Range, (Note 5), V

=0V

Input Offset Current I

IN(+)

−I

IN(−)

=0V 5.0 50 5 50 3 100 nA

Input Common-Mode V

=30 V

(LM3302, 0 V

−1.5 0 V

−1.5 V

Voltage Range V

=28 V

) (Note 6)

Supply Current R

=∞on all Comparators, 0.8 2.0 0.8 2.0 0.8 2.0 mA

=∞,V

=36V, 1.0 2.5 1.0 2.5 1.0 2.5 mA

(LM3302, V

=28 V

)

Voltage Gain R

≥15 kΩ,V

=15 V

50 200 25 100 2 30 V/mV

=1V

to 11 V

Large Signal V

=TTL Logic Swing, V

REF

= 300 300 300 ns

Response Time 1.4 V

=5 V

=5.1 kΩ,

Response Time V

=5 V

=5.1 kΩ, 1.3 1.3 1.3 µs

(Note 7)

Output Sink Current V

IN(−)

=1 V

IN(+)

=0, 6.0 16 6.0 16 6.0 16 mA

≤1.5 V

Saturation Voltage V

IN(−)

=1 V

IN(+)

=0, 250 400 250 400 250 500 mV

SINK

≤4mA

Output Leakage V

IN(+)

=1 V

IN(−)

=0, 0.1 0.1 0.1 nA

Current V

=5 V

Electrical Characteristics

= 5.0 V

, (Note 4))

Parameter Conditions LM139A LM239A,

LM339A LM139 Units

Min Typ Max Min Typ Max Min Typ Max

Input Offset Voltage (Note 9) 4.0 4.0 9.0 mV

Input Offset Current I

IN(+)

−I

IN(−)

=0V 100 150 100 nA

Input Bias Current I

IN(+)

or I

IN(−)

with Output in 300 400 300 nA

Linear Range, V

=0V (Note 5)

Input Common-Mode V

=30 V

(LM3302, 0 V

−2.0 0 V

−2.0 V

Voltage Range V

=28 V

) (Note 6)

Saturation Voltage V

IN(−)

=1 V

IN(+)

=0, 700 700 700 mV

SINK

≤4mA

LM139/LM239/LM339/LM2901/LM3302

www.national.com3

Electrical Characteristics (Continued)

= 5.0 V

, (Note 4))

Parameter Conditions LM139A LM239A,

LM339A LM139 Units

Min Typ Max Min Typ Max Min Typ Max

Output Leakage Current V

IN(+)=

IN(−)

=0, 1.0 1.0 1.0 µA

=30 V

, (LM3302,

=28 V

)

Differential Input Voltage Keep all V

’s≥0V

(or V

−

,363636V

if used), (Note 8)

Electrical Characteristics

= 5.0 V

, (Note 4))

Parameter Conditions LM239, LM339 LM2901 LM3302 Units

Min Typ Max Min Typ Max Min Typ Max

Input Offset Voltage (Note 9) 9.0 9 15 40 mV

Input Offset Current I

IN(+)

−I

IN(−)

=0V 150 50 200 300 nA

Input Bias Current I

IN(+)

or I

IN(−)

with Output in 400 200 500 1000 nA

Linear Range, V

=0V (Note

Input Common-Mode V

=30 V

(LM3302, V

=28

−2.0 0 V

−2.0 V

Voltage Range (Note 6)

Saturation Voltage V

IN(−)

=1 V

IN(+)

=0, 700 400 700 700 mV

SINK

≤4mA

Output Leakage Current V

IN(+)=

IN(−)

=0, 1.0 1.0 1.0 µA

=30 V

, (LM3302, V

=28

)

Differential Input Voltage Keep all V

’s≥0V

(or V

−

,363628V

if used), (Note 8)

Note 1: For operating at high temperatures, the LM339/LM339A, LM2901, LM3302 must be derated based on a 125˚C maximum junction temperature and a

thermal resistance of 95˚C/W which applies for the device soldered in a printed circuit board, operating in a still air ambient. The LM239 and LM139 must be derated

based on a 150˚C maximum junction temperature. The low bias dissipation and the “ON-OFF” characteristic of the outputs keeps the chip dissipation very small

(PD≤100 mW), provided the output transistors are allowed to saturate.

Note 2: Short circuits from the output to V+can cause excessive heating and eventual destruction. When considering short circuits to ground, the maximum output

current is approximately 20 mA independent of the magnitude of V+.

Note 3: This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP

transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral NPN parasitic transistor action

on the IC chip. This transistor action can cause the output voltages of the comparators to go to the V+voltage level (or to ground for a large overdrive) for the time

duration that an input is driven negative. This is not destructive and normal output states will re-establish when the input voltage, which was negative, again returns

to a value greater than −0.3 VDC (at 25˚)C.

Note 4: These specifications are limited to −55˚C≤TA≤+125˚C, for the LM139/LM139A. With the LM239/LM239A, all temperature specifications are limited to

−25˚C≤TA≤+85˚C, the LM339/LM339A temperature specifications are limited to 0˚C≤TA≤+70˚C, and the LM2901, LM3302 temperature range is −40˚C≤TA≤+85˚C.

Note 5: The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the outputso

no loading change exists on the reference or input lines.

Note 6: The input common-mode voltage or either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the common-mode

voltage range is V+−1.5V at 25˚C, but either or both inputs can go to +30 VDC without damage (25V for LM3302), independent of the magnitude of V+.

Note 7: The response time specified is a 100 mV input step with 5 mV overdrive. For larger overdrive signals 300 ns can be obtained, see typical performance

characteristics section.

Note 8: Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode range, the

comparator will provide a proper output state. The low input voltage state must not be less than −0.3 VDC (or 0.3 VDCbelow the magnitude of the negative power

supply, if used) (at 25˚C).

Note 9: At output switch point, VO.1.4 VDC,R

=0Ωwith V+from 5 VDC to 30 VDC; and over the full input common-mode range (0 VDC to V+−1.5 VDC), at 25˚C.

For LM3302, V+from 5 VDC to 28 VDC.

Note 10: Refer to RETS139AX for LM139A military specifications and to RETS139X for LM139 military specifications.

LM139/LM239/LM339/LM2901/LM3302

www.national.com 4

Typical Performance Characteristics LM139/LM239/LM339, LM139A/LM239A/LM339A, LM3302

Typical Performance Characteristics LM2901

Supply Current

DS005706-34

Input Current

DS005706-35

Output Saturation Voltage

DS005706-36

Response Time for Various

Input Overdrives—Negative

Transition

DS005706-37

Response Time for Various

Input Overdrives—Positive

Transition

DS005706-38

Supply Current

DS005706-39

Input Current

DS005706-40

Output Saturation Voltage

DS005706-41

LM139/LM239/LM339/LM2901/LM3302

www.national.com5

Typical Performance Characteristics LM2901 (Continued)

Application Hints

The LM139 series are high gain, wide bandwidth devices

which, like most comparators, can easily oscillate if the

output lead is inadvertently allowed to capacitively couple to

the inputs via stray capacitance. This shows up only during

the output voltage transition intervals as the comparator

changes states. Power supply bypassing is not required to

solve this problem. Standard PC board layout is helpful as it

reduces stray input-output coupling. Reducing this input

resistors to <10 kΩreduces the feedback signal levels and

finally, adding even a small amount (1 to 10 mV) of positive

feedback (hysteresis) causes such a rapid transition that

oscillations due to stray feedback are not possible. Simply

socketing the IC and attaching resistors to the pins will cause

input-output oscillations during the small transition intervals

unless hysteresis is used. If the input signal is a pulse

waveform, with relatively fast rise and fall times, hysteresis is

not required.

All pins of any unused comparators should be tied to the

negative supply.

The bias network of the LM139 series establishes a drain

current which is independent of the magnitude of the power

supply voltage over the range of from 2 V

to 30 V

It is usually unnecessary to use a bypass capacitor across

the power supply line.

The differential input voltage may be larger than V

without

damaging the device. Protection should be provided to

prevent the input voltages from going negative more than

−0.3 V

(at 25˚C). An input clamp diode can be used as

shown in the applications section.

The output of the LM139 series is the uncommitted collector

of a grounded-emitter NPN output transistor. Many collectors

can be tied together to provide an output OR’ing function.An

output pull-up resistor can be connected to any available

power supply voltage within the permitted supply voltage

range and there is no restriction on this voltage due to the

magnitude of the voltage which is applied to the V

terminal

of the LM139A package. The output can also be used as a

simple SPST switch to ground (when a pull-up resistor is not

used). The amount of current which the output device can

sink is limited by the drive available (which is independent of

) and the βof this device. When the maximum current limit

is reached (approximately 16 mA), the output transistor will

come out of saturation and the output voltage will rise very

rapidly. The output saturation voltage is limited by the

approximately 60ΩR

SAT

of the output transistor. The low

offset voltage of the output transistor (1 mV) allows the

output to clamp essentially to ground level for small load

currents.

Typical Applications (V

= 5.0 V

)

Response Time for Various

Input Overdrives—Negative

Transition

DS005706-42

Response Time for Various

Input Overdrives-Positive

Transition

DS005706-43

Basic Comparator

DS005706-3

Driving CMOS

DS005706-4

Driving TTL

DS005706-5

LM139/LM239/LM339/LM2901/LM3302

www.national.com 6

Typical Applications (V

= 5.0 V

) (Continued)

Typical Applications (V

=15V

)

AND Gate

DS005706-8

OR Gate

DS005706-9

One-Shot Multivibrator

DS005706-10

Bi-Stable Multivibrator

DS005706-11

LM139/LM239/LM339/LM2901/LM3302

www.national.com7

Typical Applications (V

=15V

) (Continued)

One-Shot Multivibrator with Input Lock Out

DS005706-12

Pulse Generator

DS005706-17

LM139/LM239/LM339/LM2901/LM3302

www.national.com 8

Typical Applications (V

=15V

) (Continued)

Large Fan-In AND Gate

DS005706-13

ORing the Outputs

DS005706-15

LM139/LM239/LM339/LM2901/LM3302

www.national.com9

Typical Applications (V

=15V

) (Continued)

Time Delay Generator

DS005706-14

Non-Inverting Comparator with Hysteresis

DS005706-18

Inverting Comparator with Hysteresis

DS005706-19

LM139/LM239/LM339/LM2901/LM3302

www.national.com 10

Typical Applications (V

=15V

) (Continued)

Squarewave Oscillator

DS005706-16

Basic Comparator

DS005706-21

Limit Comparator

DS005706-24

Comparing Input Voltages

of Opposite Polarity

DS005706-20

LM139/LM239/LM339/LM2901/LM3302

www.national.com11

Typical Applications (V

=15V

) (Continued)

Output Strobing

DS005706-22

* Or open-collector logic gate without pull-up resistor

Crystal Controlled Oscillator

DS005706-25

LM139/LM239/LM339/LM2901/LM3302

www.national.com 12

Typical Applications (V

=15V

) (Continued)

Two-Decade High-Frequency VCO

DS005706-23

V+=+30 VDC

250 mVDC≤VC≤+50 VDC

700 Hz≤fo≤100 kHz

LM139/LM239/LM339/LM2901/LM3302

www.national.com13

Typical Applications (V

=15V

) (Continued)

Split-Supply Applications (V

=+15 V

and V

−

=−15 V

)

Transducer Amplifier

DS005706-28

Zero Crossing Detector (Single Power Supply)

DS005706-30

MOS Clock Driver

DS005706-31

LM139/LM239/LM339/LM2901/LM3302

www.national.com 14

Split-Supply Applications (V

=+15 V

and V

−

=−15 V

) (Continued)

Schematic Diagram

Zero Crossing Detector

DS005706-32

Comparator With a Negative

Reference

DS005706-33

DS005706-1

LM139/LM239/LM339/LM2901/LM3302

www.national.com15

Connection Diagrams

Note 11: Available per JM38510/11201

Note 12: Available per SMD#5962-8873901

Note 13: See STD Mil Dwg 5962R96738 for Radiation Tolerant Device

Dual-In-Line Package

DS005706-2

Order Number LM139J, LM139J/883 (Note 11), LM139AJ,

LM139AJ/883 (Note 12), LM239J, LM239AJ, LM339J

See NS Package Number J14A

Order Number LM339AM, LM339AMX, LM339M, LM339MX or LM2901M

See NS Package Number M14A

Order Number LM339N, LM339AN, LM2901N or LM3302N

See NS Package Number N14A

DS005706-27

Order Number LM139AW/883 or LM139W/883 (Note 11)

See NS Package Number W14B,

LM139AWGRQMLV (Note 13)

See NS Package Number WG14A

LM139/LM239/LM339/LM2901/LM3302

www.national.com 16

Physical Dimensions inches (millimeters) unless otherwise noted

Ceramic Dual-In-Line Package (J)

Order Number LM139J, LM139J/883, LM139AJ,

LM139AJ/883, LM239J, LM239AJ, LM339J

NS Package Number J14A

S.O. Package (M)

Order Number LM339AM, LM339AMX, LM339M, LM339MX, LM2901M or LM2901MX

NS Package Number M14A

LM139/LM239/LM339/LM2901/LM3302

www.national.com17

Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

Molded Dual-In-Line Package (N)

Order Number LM339N, LM339AN, LM2901N or LM3302N

NS Package Number N14A

Order Number LM139AW/883, LM139W/883, LM139AWG/883 or LM139WG/883

NS Package Number W14B

LM139/LM239/LM339/LM2901/LM3302

www.national.com 18

Notes

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COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or

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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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Tel: 1-800-272-9959

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LM139/LM239/LM339/LM2901/LM3302 Low Power Low Offset Voltage Quad Comparators

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.

Products > Analog - Comparators> LM2901

Product Folder

LM2901 Low Power Low Offset Voltage Quad Comparator

Generic P/N 2901

Contents

General Description●

Features●

Applications●

Datasheet●

Package Availability, Models, Samples &

Pricing

●

Design Tools●

Application Notes●

Parametric Table

Number of Channels 4

Response Time, typ (us) .50

Supply Voltage, min (Volt) 3

Supply Voltage, max (Volt) 36

Supply Current per Channel, typ (mA) .20

Input Range Vcm to V-

Output Type Open Drain

Output Current, typ (mA) 16

Vos, Room max (mV) 7

Input Bias Current, max (nA) 500

General Description

The LM139 series consists of four independent precision voltage comparators with an offset voltage

specification as low as 2 mV max for all four comparators. These were designed specifically to operate

from a single power supply over a wide range of voltages. Operation from split power supplies is also

possible and the low power supply current drain is independent of the magnitude of the power supply

voltage. These comparators also have a unique characteristic in that the input common-mode voltage

range includes ground, even though operated from a single power supply voltage.

Application areas include limit comparators, simple analog to digital converters; pulse, squarewave and

time delay generators; wide range VCO; MOS clock timers; multivibrators and high voltage digital logic

gates. The LM139 series was designed to directly interface with TTL and CMOS. When operated from

both plus and minus power supplies, they will directly interface with MOS logic- where the low power

drain of the LM339 is a distinct advantage over standard comparators.

Features

National P/N LM2901 - Low Power Low Offset Voltage Quad Comparator

file:///d|/chechi/LM2901.html (1 of 4) [10/11/2001 2:20:11 PM]

Wide supply voltage range

LM139/139A Series 2 to 36 VDC

or ±1 to ±18 VDC

LM2901: 2 to 36 VDC

or ±1 to ±18 VDC

LM3302: 2 to 28 VDC

or ±1 to ±14 VDC

Very low supply current drain (0.8 mA) - independent of supply voltage

Low input biasing current: 25 nA

Low input offset current: ±5 nA

Offset voltage: ±3 mV

Input common-mode voltage range includes GND

Differential input voltage range equal to the power supply voltage

Low output saturation voltage: 250 mV at 4 mA

Output voltage compatible with TTL, DTL, ECL, MOS and CMOS logic systems

Applications

High precision comparators●

Reduced VOS drift over temperature●

Eliminates need for dual supplies●

Allows sensing near GND●

Compatible with all forms of logic●

Power drain suitable for battery operation●

Datasheet

Title Size

(in Kbytes) Date View

Online Download Receive via

LM139/LM239/LM339/LM2901/LM3302 Low Power Low

Offset Voltage Quad Comparators 400 Kbytes 5-Mar-01 View

Online Download Receive via

Please use Adobe Acrobat to view PDF file(s).

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Package Availability, Models, Samples & Pricing

Part

Number

Package Status Models Samples

Electronic

Orders

Budgetary

Pricing Std

Pack

Size

Package

Marking

Type #

pins SPICE IBIS Quantity $US

each

LM2901M SOIC

NARROW(MCM) 14 Full

production N/A N/A

Buy Now

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LM2901M

LM2901MX SOIC

NARROW(MCM) 14 Full

production N/A N/A

Buy Now

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2500

[logo]¢U¢Z¢2¢T

LM2901M

CTMKSC MDIP(MCM) 14 Preliminary N/A N/A tube

N/A

[logo]¢U¢Z¢3¢T¢P

CTMKSC

CTMKSC2 MDIP(MCM) 14 Full

production N/A N/A tube

N/A

[logo]¢U¢Z¢3¢T¢P

CTMKSC2

CTMKSC3 MDIP(MCM) 14 Full

production N/A N/A tube

N/A

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CTMKSC3

LM2901N MDIP(MCM) 14 Full

production N/A N/A

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LM2901N

LM2901

MDA Die Full

production N/A N/A tray

N/A -

LM2901

MWA Wafer Full

production N/A N/A N/A -

LM2901

MDC Die Full

production N/A N/A tray

N/A -

LM2901

MDCT Die Full

production N/A N/A tray

N/A -

LM2901

MWC Wafer Full

production N/A N/A N/A -

Design Tools

Title Size

(in Kbytes) Date View Online Download Receive via Email

Amplifiers Selection Guide software for Windows 10 Kbytes 22-Aug-2001 View

National P/N LM2901 - Low Power Low Offset Voltage Quad Comparator

file:///d|/chechi/LM2901.html (3 of 4) [10/11/2001 2:20:11 PM]

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If you have trouble printing, see Printing Problems.
Application Notes
Title Size
(in Kbytes) Date View Online Download Receive via Email
AN-607: Pulse Width Modulation A/D Conversion
Techniques with COP800 Family Microcontrollers 148 Kbytes 5-Aug-95 View Online Download Receive via Email
SB-106: Adaptive Breaking System (ABS) 110 Kbytes 28-Jun-96 View Online Download Receive via Email
Please use Adobe Acrobat to view PDF file(s).
If you have trouble printing, see Printing Problems.
[Information as of 29-Aug-2001]
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National P/N LM2901 - Low Power Low Offset Voltage Quad Comparator
file:///d|/chechi/LM2901.html (4 of 4) [10/11/2001 2:20:11 PM]