NSC LMC6484IN, LMC6484IMX Datasheet

LMC6484
CMOS Quad Rail-to-Rail Input and Output Operational
Amplifier

General Description

The LMC6484 provides a common-mode range that extends
to both supply rails. This rail-to-rail performance combined
with excellent accuracy, due to a high CMRR, makes it
unique among rail-to-rail input amplifiers.

It is ideal for systems, such as data acquisition, that require
a large input signal range. The LMC6484 is also anexcellent
upgrade for circuits using limited common-mode range am­plifiers such as the TLC274 and TLC279.

Maximum dynamic signal range is assured in low voltage
and single supply systems by the LMC6484’s rail-to-rail out­put swing.TheLMC6484’srail-to-railoutputswing is guaran­teed for loads down to 600Ω.

Guaranteed low voltage characteristics and low power dissi­pation make the LMC6484 especially well-suited for
battery-operated systems.

See the LMC6482 data sheet for a Dual CMOS operational
amplifier with these same features.

Features

(Typical unless otherwise noted)
n Rail-to-Rail Input Common-Mode Voltage Range

(Guaranteed Over Temperature)

n Rail-to-Rail Output Swing (within 20 mV of supply rail,

100 kΩ load)

n Guaranteed 3V, 5V and 15V Performance
n Excellent CMRR and PSRR: 82 dB
n Ultra Low Input Current: 20 fA
n High Voltage Gain (R

L

=

500 kΩ): 130 dB

n Specified for 2 kΩ and 600Ω loads

Applications

n Data Acquisition Systems
n Transducer Amplifiers
n Hand-held Analytic Instruments
n Medical Instrumentation
n Active Filter, Peak Detector, Sample and Hold, pH

Meter, Current Source

n Improved Replacement for TLC274, TLC279

3V Single Supply Buffer Circuit

Rail-to-Rail Input

DS011714-1

Rail-to-Rail Output

DS011714-3

DS011714-2

May 1999

LMC6484 CMOS Quad Rail-to-Rail Input and Output Operational Amplifier

© 1999 National Semiconductor Corporation DS011714 www.national.com

Connection Diagram

Ordering Information

Package Temperature Range NSC

Drawing

Transport

Media

Military Industrial

−55˚C to +125˚C −40˚C to +85˚C

14-pin LMC6484MN LMC6484AIN N14A Rail
Molded DIP LMC6484IN
14-pin LMC6484AIM M14A Rail
Small Outline LMC6484IM Tape and

Reel

14-pin Ceramic
DIP

LMC6484AMJ/883 J14A Rail

14-pin
Ceramic SOIC

LMC6484AMWG/883 WG14A Tray

DS011714-4

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Absolute Maximum Ratings (Note 1)

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

ESD Tolerance (Note 2) 2.0 kV
Differential Input Voltage

±

Supply Voltage

Voltage at Input/Output Pin (V

+

) + 0.3V, (V−) − 0.3V

Supply Voltage (V

+−V−

) 16V

Current at Input Pin (Note 12)

±

5mA

Current at Output Pin

(Notes 3, 8)

±

30 mA
Current at Power Supply Pin 40 mA
Lead Temp. (Soldering, 10 sec.) 260˚C

Storage Temperature Range −65˚C to +150˚C
Junction Temperature (Note 4) 150˚C

Operating Ratings (Note 1)

Supply Voltage 3.0V ≤ V

+

≤ 15.5V

Junction Temperature Range

LMC6484AM −55˚C ≤ T

J

≤ +125˚C

LMC6484AI, LMC6484I −40˚C ≤ T

J

≤ +85˚C

Thermal Resistance (θ

JA

)
N Package, 14-Pin Molded DIP 70˚C/W
M Package, 14-Pin

Surface Mount 110˚C/W

DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for T

J

=

25˚C, V

+

=

5V, V

−

=

0V, V

CM

=

V

O

=

V

+

/2 and R

L

>

1M. Boldface

limits apply at the temperature extremes.

Typ LMC6484AI LMC6484I LMC6484M

Symbol Parameter Conditions (Note 5) Limit Limit Limit Units

(Note 6) (Note 6) (Note 6)

V

OS

Input Offset Voltage 0.110 0.750 3.0 3.0 mV

1.35 3.7 3.8 max

TCV

OS

Input Offset Voltage 1.0 µV/˚C
Average Drift

I

B

Input Current (Note 13) 0.02 4.0 4.0 100 pA max

I

OS

Input Offset Current (Note 13) 0.01 2.0 2.0 50 pA max

C

IN

Common-Mode 3 pF
Input Capacitance

R

IN

Input Resistance

>

10 Tera Ω

CMRR Common Mode 0V ≤ V

CM

≤ 15.0V, 82 70 65 65 dB

min

Rejection Ratio V

+

=

15V 67 62 60

0V ≤ V

CM

≤ 5.0V 82 70 65 65

V

+

=

5V 67 62 60

+PSRR Positive Power Supply 5V ≤ V

+

≤ 15V, 82 70 65 65 dB

Rejection Ratio V

−

=

0V, V

O

=

2.5V 67 62 60 min

−PSRR Negative Power Supply −5V ≤ V

−

≤ −15V, 82 70 65 65 dB

Rejection Ratio V

+

=

0V, V

O

=

−2.5V 67 62 60 min

V

CM

Input Common-Mode V

+

=

5V and 15V V

−

− 0.3 −0.25 −0.25 −0.25 V

Voltage Range For CMRR ≥ 50 dB 000max

V

+

+ 0.3 V++ 0.25 V++ 0.25 V++ 0.25 V

V

+

V

+

V

+

min

A

V

Large Signal R

L

=

2kΩ Sourcing 666 140 120 120 V/mV

Voltage Gain (Notes 7, 13) 84 72 60 min

Sinking 75 35 35 35 V/mV

20 20 18 min

R

L

=

600Ω Sourcing 300 80 50 50 V/mV

(Notes 7, 13) 48 30 25 min

Sinking 35 20 15 15 V/mV

13 10 8 min

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DC Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for T

J

=

25˚C, V

+

=

5V, V

−

=

0V, V

CM

=

V

O

=

V

+

/2 and R

L

>

1M. Boldface

limits apply at the temperature extremes.

Typ LMC6484AI LMC6484I LMC6484M

Symbol Parameter Conditions (Note 5) Limit Limit Limit Units

(Note 6) (Note 6) (Note 6)

V

O

Output Swing V

+

=

5V 4.9 4.8 4.8 4.8 V

R

L

=

2kΩto V

+

/2 4.7 4.7 4.7 min

0.1 0.18 0.18 0.18 V

0.24 0.24 0.24 max

V

+

=

5V 4.7 4.5 4.5 4.5 V

R

L

=

600Ω to V

+

/2 4.24 4.24 4.24 min

0.3 0.5 0.5 0.5 V

0.65 0.65 0.65 max

V

+

=

15V 14.7 14.4 14.4 14.4 V

R

L

=

2kΩto V

+

/2 14.2 14.2 14.2 min

0.16 0.32 0.32 0.32 V

0.45 0.45 0.45 max

V

+

=

15V 14.1 13.4 13.4 13.4 V

R

L

=

600Ω to V

+

/2 13.0 13.0 13.0 min

0.5 1.0 1.0 1.0 V

1.3 1.3 1.3 max

I

SC

Output Short Circuit Sourcing, V

O

=

0V 20 16 16 16 mA
Current 12 12 10 min
V+=5V Sinking, V

O

=

5V 15 11 11 11 mA

9.5 9.5 8.0 min

I

SC

Output Short Circuit Sourcing, V

O

=

0V 30 28 28 28 mA
Current 22 22 20 min
V

+

=

15V Sinking, V

O

=

12V 30 30 30 30 mA

(Note 8) 24 24 22 min

I

S

Supply Current All Four Amplifiers 2.0 2.8 2.8 2.8 mA

V

+

=

+5V, V

O

=

V

+

/2 3.6 3.6 3.8 max
All Four Amplifiers 2.6 3.0 3.0 3.0 mA
V

+

=

+15V, V

O

=

V

+

/2 3.8 3.8 4.0 max

AC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for T

J

=

25˚C, V

+

=

5V, V

−

=

0V, V

CM

=

V

O

=

V

+

/2 and R

L

>

1M. Boldface

limits apply at the temperature extremes.

Typ LMC6484A LMC6484I LMC6484M

Symbol Parameter Conditions (Note 5) Limit Limit Limit Units

(Note 6) (Note 6) (Note 6)

SR Slew Rate (Note 9) 1.3 1.0 0.9 0.9 V/µs

0.7 0.63 0.54 min

GBW Gain-Bandwidth Product V

+

=

15V 1.5 MHz

φ

m

Phase Margin 50 Deg

G

m

Gain Margin 15 dB
Amp-to-Amp Isolation (Note 10) 150 dB

e

n

Input-Referred f=1 kHz 37

Voltage Noise V

CM

=

1V

i

n

Input-Referred f=1 kHz 0.03
Current Noise

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AC Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for T

J

=

25˚C, V

+

=

5V, V

−

=

0V, V

CM

=

V

O

=

V

+

/2 and R

L

>

1M. Boldface

limits apply at the temperature extremes.

Typ LMC6484A LMC6484I LMC6484M

Symbol Parameter Conditions (Note 5) Limit Limit Limit Units

(Note 6) (Note 6) (Note 6)

T.H.D. Total Harmonic Distortion f=1 kHz, A

V

=

−2 0.01

%

R

L

=

10 kΩ,V

O

=

4.1 V

PP

f=10 kHz, A

V

=

−2

R

L

=

10 kΩ,V

O

=

8.5 V

PP

0.01

%

V

+

=

10V

DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for T

J

=

25˚C, V

+

=

3V, V

−

=

0V, V

CM

=

V

O

=

V

+

/2 and R

L

>

1M

Typ LMC6484AI LMC6484I LMC6484M

Symbol Parameter Conditions (Note 5) Limit Limit Limit Units

(Note 6) (Note 6) (Note 6)

V

OS

Input Offset Voltage 0.9 2.0 3.0 3.0 mV

2.7 3.7 3.8 max

TCV

OS

Input Offset Voltage 2.0 µV/˚C
Average Drift

I

B

Input Bias Current 0.02 pA

I

OS

Input Offset Current 0.01 pA

CMRR Common Mode 0V ≤ V

CM

≤ 3V 74 64 60 60 dB

Rejection Ratio min

PSRR Power Supply 3V ≤ V

+

≤ 15V, V

−

=

0V 80 68 60 60 dB

Rejection Ratio min

V

CM

Input Common-Mode For CMRR ≥ 50 dB V−− 0.25 0 0 0 V
Voltage Range max

V

+

+ 0.25 V

+

V

+

V

+

V

min

V

O

Output Swing R

L

=

2kΩto V

+

/2 2.8 V

0.2 V

R

L

=

600Ω to V

+

/2 2.7 2.5 2.5 2.5 V

min

0.37 0.6 0.6 0.6 V
max

I

S

Supply Current All Four Amplifiers 1.65 2.5 2.5 2.5 mA

3.0 3.0 3.2 max

AC Electrical Characteristics

Unless otherwise specified, V

+

=

3V, V

−

=

0V, V

CM

=

V

O

=

V

+

/2 and R

L

>

1M

Typ LMC6484AI LMC6484I LMC6484M

Symbol Parameter Conditions (Note 5) Limit Limit Limit Units

(Note 6) (Note 6) (Note 6)
SR Slew Rate (Note 11) 0.9 V/µs
GBW Gain-Bandwidth Product 1.0 MHz
T.H.D. Total Harmonic Distortion f=10 kHz, A

V

=

−2 0.01

%

R

L

=

10 kΩ,V

O

=

2V

PP

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.All pins rated per method 3015.6 of MIL-STD-883. This is a class 2 device rating.

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AC Electrical Characteristics (Continued)

Note 3: Applies to both single supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the maxi-

mum allowed junction temperature of 150˚C. Output currents in excess of

±

30 mA over long term may adversely affect reliability.

Note 4: The maximum power dissipation is a function of T

J(max)

, θJA, and TA. The maximum allowable power dissipation at any ambient temperature is P

D

=

(T

J(max)

−TA)/θJA. All numbers apply for packages soldered directly into a PC board.

Note 5: Typical Values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: V

+

=

15V, V

CM

=

7.5V and R

L

connected to 7.5V. For Sourcing tests, 7.5V ≤ VO≤ 11.5V. For Sinking tests, 3.5V ≤ VO≤ 7.5V.

Note 8: Do not short circuit output to V

+

, when V+is greater than 13V or reliability will be adversely affected.

Note 9: V

+

=

15V. Connected as Voltage Follower with 10V step input. Number specified is the slower of either the positive or negative slew rates.

Note 10: Input referred, V

+

=

15V and R

L

=

100 kΩ connected to 7.5V. Each amp excited in turn with 1 kHz to produce V

O

=

12 V

PP

.

Note 11: Connected as Voltage Follower with 2V step input. Number specified is the slower of either the positive or negative slew rates.
Note 12: Limiting input pin current is only necessary for input voltages that exceed absolute maximum input voltage ratings.
Note 13: Guaranteed limits are dictated by tester limitations and not device performance. Actual performance is reflected in the typical value.
Note 14: For guaranteed Military Temperature Range parameters see RETSMC6484X.

Typical Performance Characteristics V

S

=

+15V, Single Supply, T

A

=

25˚C unless otherwise

specified

Supply Current vs
Supply Voltage

DS011714-39

Input Current vs
Temperature

DS011714-40

Sourcing Current vs
Output Voltage

DS011714-41

Sourcing Current vs
Output Voltage

DS011714-42

Sourcing Current vs
Output Voltage

DS011714-43

Sinking Current vs
Output Voltage

DS011714-44

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Typical Performance Characteristics V

S

=

+15V, Single Supply, T

A

=

25˚C unless otherwise

specified (Continued)

Sinking Current vs
Output Voltage

DS011714-45

Sinking Current vs
Output Voltage

DS011714-46

Output Voltage Swing
vs Supply Voltage

DS011714-47

Input Voltage Noise
vs Frequency

DS011714-48

Input Voltage Noise
vs Input Voltage

DS011714-49

Input Voltage Noise
vs Input Voltage

DS011714-50

Input Voltage Noise
vs Input Voltage

DS011714-51

Crosstalk Rejection
vs Frequency

DS011714-52

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