NSC LM392M, LM2924N, LM392N Datasheet

July 1992

LM392/LM2924
Low Power Operational Amplifier/Voltage Comparator

LM392/LM2924 Low Power Operational Amplifier/Voltage Comparator

General Description

The LM392 series consists of 2 independent building block
circuits. One is a high gain, internally frequency compensat­ed operational amplifier, and the other is a precision voltage
comparator. Both the operational amplifier and the voltage
comparator have been specifically designed to operate from
a single power supply over a wide range of voltages. Both
circuits have input stages which will common-mode input
down to ground when operating from a single power supply.
Operation from split power supplies is also possible and the
low power supply current is independent of the magnitude
of the supply voltage.

Application areas include transducer amplifier with pulse
shaper, DC gain block with level detector, VCO, as well as
all conventional operational amplifier or voltage comparator
circuits. Both circuits can be operated directly from the stan­dard 5 V
and the output of the comparator will interface directly with

power supply voltage used in digital systems,

DC

either TTL or CMOS logic. In addition, the low power drain
makes the LM392 extremely useful in the design of portable
equipment.

Advantages

Y

Eliminates need for dual power supplies

Y

An internally compensated op amp and a precision
comparator in the same package

Y

Allows sensing at or near ground

Y

Power drain suitable for battery operation

Y

Pin-out is the same as both the LM358 dual op amp
and the LM393 dual comparator

Connection Diagram (Top View)

(Amplifier A

(Amplifier B

e

Dual-In-Line Package

Features

Y

Wide power supply voltage range
Single supply 3V to 32V
Dual supply

Y

Low supply current drainÐessentially independent of

supply voltage 600 mA

Y

Low input biasing current 50 nA

Y

Low input offset voltage 2 mV

Y

Low input offset current 5 nA

Y

Input common-mode voltage range includes ground

Y

Differential input voltage range equal to the power sup-

ply voltage

ADDITIONAL OP AMP FEATURES

Y

Internally frequency compensated for unity gain

Y

Large DC voltage gain 100 dB

Y

Wide bandwidth (unity gain) 1 MHz

Y

Large output voltage swing 0V to V

ADDITIONAL COMPARATOR FEATURES

Y

Low output saturation voltage 250 mV at 4 mA

Y

Output voltage compatible with all types of logic sys-

tems

e

Comparator)

Operational Amplifier)

g

1.5V tog16V

a

b

1.5V

Order Number LM392M or LM2924M

TL/H/7793– 1

See NS Package Number M08A

Order Number LM392N or LM2924N

See NS Package Number N08E

C

1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.

TL/H/7793

Absolute Maximum Ratings

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Supply Voltage, V

a

Differential Input Voltage 32V 26V

Input Voltage

Power Dissipation (Note 1)

Molded DIP (LM392N, LM2924N) 820 mW 820 mW
Small Outline Package (LM392M, LM2924M) 530 mW 530 mW

Output Short-Circuit to Ground (Note 2) Continuous Continuous

k

Input Current (V

b

0.3 VDC) (Note 3) 50 mA 50 mA

IN

Operating Temperature Range 0

Storage Temperature Range

Lead Temperature (Soldering, 10 seconds) 260§C 260§C

ESD rating to be determined.

Soldering Information

Dual-in-Line Package

Soldering (10 seconds) 260

Small Outline Package

Vapor Phase (60 seconds) 215
Infrared (15 seconds) 220

See AN-450 ‘‘Surface Mounting Methods and Their Effect on Product Reliability’’ for other methods of soldering
surface mount devices.

a

Electrical Characteristics (V

e

5VDC; specifications apply to both amplifiers unless otherwise stated)

(Note 4)

Parameter Conditions

Input Offset Voltage T

Input Bias Current IN(a)orIN(b), T

Input Offset Current IN(a)bIN(b), T

Input Common-Mode Voltage V
Range (Note 7) (LM2924, 0 V

Supply Current R

Supply Current R

Amplifier-to-Amplifier Coupling fe1 kHz to 20 kHz,

e

25§C, (Note 5)

A

(Note 6), V

V

(LM2924, V

T
(Note 8)

CM

a

e

30 VDC,T

a

e

26 VDC)

a

e %

,V

L

L

A

a

a

e %

,V

e

25§C, Input Referred,

e

A

e

0V

e

A

e

A

e

30V,

e

26V)

e

5V 0.5 1 0.5 1 mA

Min Typ Max Min Typ Max

25§C,

25§C

25§C,

Input Offset Voltage (Note 5)

Input Bias Current IN(a)orIN(b) 400 500 nA

Input Offset Current IN(a)bIN(b) 150 200 nA

a

Input Common-Mode Voltage V
Range (LM2924, V

Differential Input Voltage Keep All VIN’st0V

e

30 VDC, (Note 7)

a

e

26 VDC)

(or Vb, if Used), (Note 9)

DC

OP AMP ONLY

a

Large Signal Voltage Gain V

e

15 VDC,Voswing

1VDCto 11 VDC, 25 100 25 100 V/mV

e

R

2kX,T

L

A

e

e

25§C

LM392 LM2924

32V org16V 26V org13V

b

0.3V toa32V

Ctoa70§C

§

b

65§Ctoa150§C

C 260§C

§

C 215§C

§

C 220§C

§

b

0.3V toa26V

b

40§Ctoa85§C

b

65§Ctoa150§C

LM392 LM2924

g

g

2

5

g

g

2

7mV

50 250 50 250 nA

g

g

5

50

a

b

1.5 0 V

g

g

5

50 nA

a

b

1.5 V

12 1 2mA

b

100

g

7

a

b

0V

20 V

b

100 dB

g

10 mV

a

b

2V

32 26 V

Units

2