National Semiconductor LMC6484 Technical data

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

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

May 1999

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-railoutput swing 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.

3V Single Supply Buffer Circuit

Rail-to-Rail Input

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
n Specified for 2 kΩ and 600Ω loads

=

500 kΩ): 130 dB

L

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

Rail-to-Rail Output

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DS011714-2

© 1999 National Semiconductor Corporation DS011714 www.national.com

DS011714-3

Connection Diagram

Ordering Information

Package Temperature Range NSC

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

14-pin Ceramic
DIP

14-pin
Ceramic SOIC

DS011714-4

Military Industrial

−55˚C to +125˚C −40˚C to +85˚C

LMC6484AMJ/883 J14A Rail

LMC6484AMWG/883 WG14A Tray

Drawing

Transport

Media

Reel

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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
Voltage at Input/Output Pin (V
Supply Voltage (V

+−V−

) 16V
Current at Input Pin (Note 12)
Current at Output Pin

(Notes 3, 8)
Current at Power Supply Pin 40 mA
Lead Temp. (Soldering, 10 sec.) 260˚C

±

Supply Voltage

+

) + 0.3V, (V−) − 0.3V

±

5mA

±

30 mA

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

Operating Ratings (Note 1)

Supply Voltage 3.0V ≤ V
Junction Temperature Range

LMC6484AM −55˚C ≤ T
LMC6484AI, LMC6484I −40˚C ≤ T

Thermal Resistance (θ

)

JA

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

Surface Mount 110˚C/W

+

≤ 15.5V

≤ +125˚C

J

≤ +85˚C

J

DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for T
limits apply at the temperature extremes.

=

J

25˚C, V

+

=

5V, V

−

=

0V, V

CM

+

=

=

/2 and R

V

V

O

>

1M. Boldface

L

Typ LMC6484AI LMC6484I LMC6484M

Symbol Parameter Conditions (Note 5) Limit Limit Limit Units

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

V

Input Offset Voltage 0.110 0.750 3.0 3.0 mV

OS

1.35 3.7 3.8 max

TCV

Input Offset Voltage 1.0 µV/˚C

OS

Average Drift
I
I
C

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

B

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

OS

Common-Mode 3 pF

IN

Input Capacitance
R

IN

Input Resistance
CMRR Common Mode 0V ≤ V

+

=

Rejection Ratio V

15V 67 62 60

0V ≤ V

+

=

V

5V 67 62 60

+PSRR Positive Power Supply 5V ≤ V

−

Rejection Ratio V

=

0V, V

−PSRR Negative Power Supply −5V ≤ V

+

Rejection Ratio V
V

Input Common-Mode V

CM

=

0V, V

+

=

5V and 15V V

≤ 15.0V, 82 70 65 65 dB

CM

≤ 5.0V 82 70 65 65

CM

+

≤ 15V, 82 70 65 65 dB

=

2.5V 67 62 60 min

O

−

≤ −15V, 82 70 65 65 dB

=

−2.5V 67 62 60 min

O

>

10 Tera Ω

−

− 0.3 −0.25 −0.25 −0.25 V

min

Voltage Range For CMRR ≥ 50 dB 000max

+

V

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

A

Large Signal R

V

=

2kΩ Sourcing 666 140 120 120 V/mV

L

+

V

+

V

+

V

min

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

Sinking 75 35 35 35 V/mV

20 20 18 min

=

R

600Ω Sourcing 300 80 50 50 V/mV

L

(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
limits apply at the temperature extremes.

=

J

25˚C, V

+

Symbol Parameter Conditions (Note 5) Limit Limit Limit Units

+

V

I

Output Swing V

O

Output Short Circuit Sourcing, V

SC

=

5V 4.9 4.8 4.8 4.8 V

=

R

2kΩto V

L

+

=

V

5V 4.7 4.5 4.5 4.5 V

=

R

600Ω to V

L

+

=

V

15V 14.7 14.4 14.4 14.4 V

=

R

2kΩto V

L

+

=

V

15V 14.1 13.4 13.4 13.4 V

=

R

600Ω to V

L

+

/2 4.7 4.7 4.7 min

+

/2 4.24 4.24 4.24 min

+

/2 14.2 14.2 14.2 min

+

/2 13.0 13.0 13.0 min

=

0V 20 16 16 16 mA

O

Current 12 12 10 min
V+=5V Sinking, V

I

Output Short Circuit Sourcing, V

SC

=

5V 15 11 11 11 mA

O

=

0V 30 28 28 28 mA

O

Current 22 22 20 min

+

=

V

15V Sinking, V

=

12V 30 30 30 30 mA

O

(Note 8) 24 24 22 min

I

Supply Current All Four Amplifiers 2.0 2.8 2.8 2.8 mA

S

+

=

V

+5V, V

+

=

/2 3.6 3.6 3.8 max

V

O

All Four Amplifiers 2.6 3.0 3.0 3.0 mA
V

+

=

+15V, V

+

=

/2 3.8 3.8 4.0 max

V

O

=

5V, V

−

=

0V, V

CM

+

=

=

/2 and R

V

V

O

>

1M. Boldface

L

Typ LMC6484AI LMC6484I LMC6484M

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

0.1 0.18 0.18 0.18 V

0.24 0.24 0.24 max

0.3 0.5 0.5 0.5 V

0.65 0.65 0.65 max

0.16 0.32 0.32 0.32 V

0.45 0.45 0.45 max

0.5 1.0 1.0 1.0 V

1.3 1.3 1.3 max

9.5 9.5 8.0 min

AC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for T
limits apply at the temperature extremes.

=

J

25˚C, V

+

=

5V, V

−

=

0V, V

CM

+

=

=

/2 and R

V

V

O

>

1M. Boldface

L

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

φ

G

Phase Margin 50 Deg

m

Gain Margin 15 dB

m

15V 1.5 MHz

Amp-to-Amp Isolation (Note 10) 150 dB

e

i

n

Input-Referred f=1 kHz 37

n

Voltage Noise V

=

1V

CM

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
limits apply at the temperature extremes.

=

J

25˚C, V

+

Symbol Parameter Conditions (Note 5) Limit Limit Limit Units

=

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

=

R

10 kΩ,V

L

f=10 kHz, A

=

R

10 kΩ,V

L
+

=

V

10V

−2 0.01

V

=

4.1 V

O

V

O

PP

=

−2

=

8.5 V

PP

=

5V, V

−

=

0V, V

CM

+

=

=

/2 and R

V

V

O

L

Typ LMC6484A LMC6484I LMC6484M

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

0.01

>

1M. Boldface

%

%

DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for T

=

J

25˚C, V

+

=

3V, V

−

=

0V, V

CM

+

=

=

/2 and R

V

V

O

>

1M

L

Typ LMC6484AI LMC6484I LMC6484M

Symbol Parameter Conditions (Note 5) Limit Limit Limit Units

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

V

Input Offset Voltage 0.9 2.0 3.0 3.0 mV

OS

2.7 3.7 3.8 max

TCV

Input Offset Voltage 2.0 µV/˚C

OS

Average Drift

I

B

I

OS

CMRR Common Mode 0V ≤ V

Input Bias Current 0.02 pA
Input Offset Current 0.01 pA

≤ 3V 74 64 60 60 dB

CM

Rejection Ratio min

PSRR Power Supply 3V ≤ V

+

≤ 15V, V

−

=

0V 80 68 60 60 dB

Rejection Ratio min

V

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

CM

Voltage Range max

+

V

+ 0.25 V

+

+

V

+

V

V

min

V

Output Swing R

O

=

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

+

=

=

/2 and R

V

V

O

>

1M

L

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

=

R

10 kΩ,V

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.

L

−2 0.01

V

=

2V

O

PP

%

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

−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
Note 8: Do not short circuit output to V
Note 9: V
Note 10: Input referred, V
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.

=

+

=

=

15V, V

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

CM

7.5V and R

+

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

L

+

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

=

15V and R

=

L

J(max)

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

±

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

30 mA over long term may adversely affect reliability.

=

O

12 V

.

PP

=

(T

D

J(max)

Typical Performance Characteristics V

specified

Supply Current vs
Supply Voltage

DS011714-39

Sourcing Current vs
Output Voltage

Input Current vs
Temperature

Sourcing Current vs
Output Voltage

=

+15V, Single Supply, T

S

DS011714-40

=

25˚C unless otherwise

A

Sourcing Current vs
Output Voltage

Sinking Current vs
Output Voltage

DS011714-41

DS011714-42

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DS011714-43

DS011714-44

Typical Performance Characteristics V

specified (Continued)

=

+15V, Single Supply, T

S

=

25˚C unless otherwise

A

Sinking Current vs
Output Voltage

Input Voltage Noise
vs Frequency

DS011714-45

Sinking Current vs
Output Voltage

DS011714-48

DS011714-46

Input Voltage Noise
vs Input Voltage

Output Voltage Swing
vs Supply Voltage

DS011714-47

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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