Datasheet LM310N, LM310J, LM310H, LM210J, LM110N Datasheet (NSC)

TL/H/7761

LM110/LM210/LM310 Voltage Follower

November 1994

LM110/LM210/LM310 Voltage Follower

General Description

The LM110 series are monolithic operational amplifiers in­ternally connected as unity-gain non-inverting amplifiers.
They use super-gain transistors in the input stage to get low
bias current without sacrificing speed. Directly interchange­able with 101, 741 and 709 in voltage follower applications,
these devices have internal frequency compensation and
provision for offset balancing.

The LM110 series are useful in fast sample and hold cir­cuits, active filters, or as general-purpose buffers. Further,
the frequency response is sufficiently better than standard
IC amplifiers that the followers can be included in the feed­back loop without introducing instability. They are plug-in
replacements for the LM102 series voltage followers, offer-

ing lower offset voltage, drift, bias current and noise in addi­tion to higher speed and wider operating voltage range.

The LM110 is specified over a temperature range

b

55§C

s

T

A

s

a

125§C, the LM210 fromb25§CsT

A

s

a

85§C and

the LM310 from 0

§

CsT

A

s

a

70§C.

Features

Y

Input current 10 nA max over temperature

Y

Small signal bandwidth 20 MHz

Y

Slew rate 30 V/ms

Y

Supply voltage range

g

5V tog18V

Schematic Diagram

TL/H/7761– 1

C

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

Absolute Maximum Ratings

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
(Note 6)

Supply Voltage

g

18V

Power Dissipation (Note 1) 500 mW

Input Voltage (Note 2)

g

15V

Output Short Circuit Duration (Note 3) Indefinite

Operating Temperature Range

LM110

b

55§Ctoa125§C

LM210

b

25§Ctoa85§C

LM310 0

§

Ctoa70§C

Storage Temperature Range

b

65§Ctoa150§C

Lead Temperature (Soldering, 10 sec.) 260§C

Soldering Information

Dual-In-Line Package

Soldering (10 sec.) 260

§

C

Small Outline Package

Vapor Phase (60 sec.) 215

§

C

Infrared (15 sec.) 220

§

C

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

ESD rating to be determined.

Electrical Characteristics (Note 4)

Parameter Conditions

LM110 LM210 LM310

Units

Min Typ Max Min Typ Max Min Typ Max

Input Offset Voltage T

A

e

25§C 1.5 4.0 1.5 4.0 2.5 7.5 mV

Input Bias Current T

A

e

25§C 1.0 3.0 1.0 3.0 2.0 7.0 nA

Input Resistance T

A

e

25§C10

101012

101010

12

101010

12

X

Input Capacitance 1.5 1.5 1.5 pF

Large Signal Voltage T

A

e

25§C, V

S

e

g

15V

0.999 0.9999 0.999 0.9999 0.999 0.9999 V/V

Gain V

OUT

e

g

10V, R

L

e

8kX

Output Resistance T

A

e

25§C 0.75 2.5 0.75 2.5 0.75 2.5 X

Supply Current T

A

e

25§C 3.9 5.5 3.9 5.5 3.9 5.5 mA

Input Offset Voltage 6.0 6.0 10 mV

Offset Voltage

b

55§CsT

A

s

a

85§C6 6 mV/§C

Temperature Drift

a

85sT

A

s

125§C12 mV/§C

0

§

CsT

A

s

a

70§C10mV/§C

Input Bias Current 10 10 10 nA

Large Signal Voltage V

S

e

g

15V, V

OUT

e

g

10V

0.999 0.999 0.999 V/V

Gain R

L

e

10 kX

Output Voltage V

S

e

g

15V, R

L

e

10 kX

g

10

g

10

g

10 V

Swing (Note 5)

Supply Current T

A

e

125§C 2.0 4.0 2.0 4.0 mA

Supply Voltage

g

5VsV

S

s

g

18V

70 80 70 80 70 80 dB

Rejection Ratio

Note 1: The maximum junction temperature of the LM110 is 150§C, of the LM210 is 100§C, and of the LM310 is 85§C. For operating at elevated temperatures,
devices in the HO8 package must be derated based on a thermal resistance of 165

§

C/W, junction to ambient, or 22§C/W, junction to case. The thermal resistance

of the dual-in-line package is 100

§

C/W, junction to ambient.

Note 2: For supply voltages less than

g

15V, the absolute maximum input voltage is equal to the supply voltage.

Note 3: Continuous short circuit for the LM110 and LM210 is allowed for case temperatures to 125

§

C and ambient temperatures to 70§C, and for the LM310, 70§C

case temperature or 55

§

C ambient temperature. It is necessary to insert a resistor greater than 2 kX in series with the input when the amplifier is driven from low

impedance sources to prevent damage when the output is shorted. R

S

e

5k min, 10k typical is recommended for dynamic stability in all applications.

Note 4: These specifications apply for

g

5VsV

S

s

g

18V andb55§CsTA125§C for the LM110,b25§CsT

A

s

85§C for the LM210, and 0§CsT

A

s

70§C for

the LM310 unless otherwise specified.

Note 5: Increased output swing under load can be obtained by connecting an external resistor between the booster and V

b

terminals. See curve.

Note 6: Refer to RETS110X for LM110H, LM110J military specifications.

Application Hint

The input must be driven from a source impedance of typically 10 kX (5 kX min.) to maintain stability. The total source
impedance will be reduced at high frequencies if there is stray capacitance at the input pin. In these cases, a 10 kX resistor
should be inserted in series with the input, physically close to the input pin to minimize the stray capacitance and prevent
oscillation.

2

Typical Performance Characteristics (LM110/LM210)

Input Current Output Noise Voltage Response

Large Signal Pulse

Phase Lag

Voltage Gain and

Phase Lag

Voltage Gain and

Voltage Gain

Output Resistance Symmetrical Output Swing Positive Output Swing

Frequency Response

Large Signal

Power Supply Rejection Supply Current

TL/H/7761– 28

3

Typical Performance Characteristics (LM310)

Input Current Output Noise Voltage Response

Large Signal Pulse

Phase Lag

Voltage Gain and

Phase Lag

Voltage Gain and

Voltage Gain

Output Resistance Symmetrical Output Swing Positive Output Swing

Frequency Response

Large Signal

Power Supply Rejection Supply Current

TL/H/7761– 29

4

Auxiliary Circuits

Offset Balancing Circuit

TL/H/7761– 2

Increasing Negative Swing Under Load

TL/H/7761– 3

*May be added to reduce internal dissipation

Typical Applications

Differential Input Instrumentation Amplifier

TL/H/7761– 4

R4

R2

e

R5

R3

A

V

e

R4

R2

Fast Integrator with Low Input Current

TL/H/7761– 5

5

Typical Applications (Continued)

Fast Inverting Amplifier with High Input Impedance

TL/H/7761– 6

Comparator for Signals of Opposite Polarity

TL/H/7761– 7

Zero Crossing Detector

TL/H/7761– 9

6

Typical Applications (Continued)

Driver for A/D Ladder Network

TL/H/7761– 8

Buffer for Analog Switch*

TL/H/7761– 10

*Switch substrates are boot-strapped to reduce output capacitance of switch.

7

Typical Applications (Continued)

Comparator for AC Coupled Signals

TL/H/7761– 11

High Input Impedance AC Amplifier

TL/H/7761– 12

Comparator for A/D Converter Using a Binary-Weighted Network

TL/H/7761– 13

8

Typical Applications (Continued)

Bilateral Current Source

TL/H/7761– 14

I

OUT

e

R3V

IN

R1 R5

R3

eR4a

R5

R1

e

R2

Comparator for A/D Converter Using a Ladder Network

TL/H/7761– 15

Sine Wave Oscillator

f

o

e

10 kHz

TL/H/7761– 16

9

Typical Applications (Continued)

Low Pass Active Filter

TL/H/7761– 18

*Values are for 10 kHz cutoff. Use silvered mica capacitors for good temperature stability.

High Pass Active Filter

TL/H/7761– 19

*Values are for 100 Hz cutoff. Use metalized polycarbonate capacitors for good temperature stability.

Simulated Inductor

TL/H/7761– 21

10

Typical Applications (Continued)

Adjustable Q Notch Filter

TL/H/7761– 22

f

o

e

1

2qR1C1

R1

eR2e

2R3

C1

eC2e

C3/2

Bandpass Filter

TL/H/7761– 23

Sample and Hold

TL/H/7761– 24

²

Use capacitor with polycarbonate teflon or polythylene dietetric

11

Typical Applications (Continued)

Buffered Reference Source

TL/H/7761– 25

Low Drift Sample and Hold*

²

Teflon polyethylene or polycarbonate dielectric capacitor

*Worst case drift less than 3 mV/sec TL/H/7761– 26

Variable Capacitance Multiplier

C

e

#

1

a

R

b

R

a

J

C

1

TL/H/7761– 27

12

Connection Diagrams

Metal Can Package

TL/H/7761– 30

Package is connected to Pin 4 (Vb)

Top View

Order Number LM110H, LM210H or LM310H

LM110H/883*

See NS Package Number H08C

Dual-In-Line Package

TL/H/7761– 31

Top View

Order Number LM110J, LM210J,

LM310J or LM110J/883*

See NS Package Number J14A

Dual-In-Line Package

TL/H/7761– 32

Top View

Order Number LM310M, LM310N or LM110J-8/883*

See NS Package Number J08A, M08A or N08E

*Available per SMDÝ5962-8760601

13

Physical Dimensions inches (millimeters)

Metal Can Package (H)

Order Number LM110H, LM110H/883, LM210H or LM310H

NS Package Number H08C

Dual-In-Line Package (J)

Order Number LM110J-8/883

NS Package Number J08A

14

Physical Dimensions inches (millimeters) (Continued)

Ceramic Dual-In-Line Package (J)

Order Number LM110J/883

NS Package Number J14A

S.O. Package (M)

Order Number LM310M

NS Package Number M08A

15

LM110/LM210/LM310 Voltage Follower

Physical Dimensions inches (millimeters) (Continued)

Molded Dual-In-Line Package (N)

Order Number LM310N

NS Package Number N08E

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