National Semiconductor LMC6482 Technical data

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LMC6482 CMOS Dual Rail-To-Rail Input and Output Operational Amplifier

November 1997

General Description

The LMC6482 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 LMC6482 is also anexcellent upgrade for circuits using limited common-mode range amplifiers such as the TLC272 and TLC277.

Maximum dynamic signal range is assured in low voltage and single supply systems by the LMC6482’s rail-to-rail output swing.TheLMC6482’srail-to-railoutput swing is guaranteed for loads down to 600Ω.

Guaranteed low voltage characteristics and low power dissipation make the LMC6482 especially well-suited for battery-operated systems.

LMC6482 is also available in MSOP package which is almost half the size of a SO-8 device.

See the LMC6484 data sheet for a Quad 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 n Available in MSOP Package

=

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 TLC272, TLC277

Rail-To-Rail Output

DS011713-2

DS011713-1

DS011713-3

Connection Diagram

DS011713-4

Ordering Information

Package Temperature Range NSC

Military Industrial

−55˚C to +125˚C −40˚C to +85˚C

8-Pin LMC6482MN LMC6482AIN, N08E Rail LMC6482MN, Molded DIP LMC6482IN LMC6482AIN, LMC6482IN 8-pin LMC6482AIM, M08A Rail LMC6482AIM, LMC6482IM Small Outline LMC6482IM Tape and Reel 8-pin LMC6482AMJ/883 J08A Rail LMC6482AMJ/883Q5962-9453401MPA Ceramic DIP 8-pin LMC6482IMM MUA08A Rail A10 Mini SO Tape and Reel

Drawing

Transport

Media

Package Marking

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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) 1.5 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 Temperature

(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+ ≤ 15.5V Junction Temperature Range

LMC6482AM −55˚C ≤ T LMC6482AI, LMC6482I −40˚C ≤ T

Thermal Resistance (θ

)

JA

N Package, 8-Pin Molded DIP 90˚C/W M Package, 8-Pin Surface Mount 155˚C/W MSOP package, 8-Pin Mini SO 194˚C/W

≤ +125˚C

J

≤ +85˚C

J

DC Electrical Characteristics

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

Symbol Parameter Conditions Typ

V

TCV

Input Offset Voltage 0.11 0.750 3.0 3.0 mV

OS

Input Offset Voltage 1.0 µV/˚C

OS

=

J

25˚C, V

+

=

(Note 5)

5V, V

Average Drift

I

C

Input Current (Note 13) 0.02 4.0 4.0 10.0 pA

B

Input Offset Current (Note 13) 0.01 2.0 2.0 5.0 pA

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

=

O

−PSRR Negative Power Supply −5V ≤ V Rejection Ratio V

V

Input Common-Mode V

CM

=

O +

=

5V and 15V V

≤ 15.0V 82 70 65 65 dB

CM

≤ 5.0V 82 70 65 65

CM

+

≤ 15V, V

−

=

0V 82 70 65 65 dB

2.5V 67 62 60 min

−

≤ −15V, V

+

=

0V 82 70 65 65 dB

−2.5V 67 62 60 min

>

−

− 0.3 − 0.25 − 0.25 − 0.25 V

Voltage Range For CMRR ≥ 50 dB 000max

+

V

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

A

Large Signal R

V

=

2kΩ Sourcing 666 140 120 120 V/mV

L

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

Sinking 75 35 35 35 V/mV

=

R

600Ω Sourcing 300 80 50 50 V/mV

L

(Notes 7, 13) 48 30 25 min

Sinking 35 20 15 15 V/mV

−

=

0V, V

CM

+

=

/2 and R

V

O

>

1M. Boldface

L

LMC6482AI LMC6482I LMC6482M Units

Limit Limit Limit

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

1.35 3.7 3.8 max

max

10 TeraΩ

min

+

V

+

V

+

V

min

20 20 18 min

13 10 8 min

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DC Electrical Characteristics (Continued)

25˚C, V

+

=

5V, V

(Note 5)

0.1 0.18 0.18 0.18 V

0.3 0.5 0.5 0.5 V

0.16 0.32 0.32 0.32 V

0.5 1.0 1.0 1.0 V

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

=

J

Symbol Parameter Conditions Typ

+

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 Both Amplifiers 1.0 1.4 1.4 1.4 mA

S

+

=

V

+5V, V

+

=

/2 1.8 1.8 1.9 max

V

O

Both Amplifiers 1.3 1.6 1.6 1.6 mA

+

=

V

15V, V

O

+

=

/2

V

−

=

0V, V

CM

+

=

/2 and R

V

O

>

1M. Boldface

L

LMC6482AI LMC6482I LMC6482M Units

Limit Limit Limit

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

0.24 0.24 0.24 max

0.65 0.65 0.65 max

0.45 0.45 0.45 max

1.3 1.3 1.3 max

9.5 9.5 8.0 min

1.9 1.9 2.0 max

AC Electrical Characteristics

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

Symbol Parameter Conditions Typ

=

J

25˚C, V

+

=

5V, V

(Note 5)

−

=

0V, V

CM

+

=

/2, and R

V

O

>

1M. Boldface

L

LMC6482AI LMC6482I LMC6482M Units

Limit Limit Limit

(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 nV/√Hz

n

Voltage Noise V

=

1V

cm

Input-Referred F=1 kHz 0.03 pA/√Hz Current Noise

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AC Electrical Characteristics (Continued)

25˚C, V

=

−2

=

4.1 V

=

−2

=

8.5 V

PP

+

=

5V, V

(Note 5)

0.01

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

=

J

Symbol Parameter Conditions Typ

T.H.D. Total Harmonic Distortion F=10 kHz, A

=

R

L

F=10 kHz, A

=

R

L

+

=

V

10 kΩ,V

10 kΩ,V 10V

V

O

V

O

−

=

0V, V

CM

+

=

/2, and R

V

O

>

1M. Boldface

L

LMC6482AI LMC6482I LMC6482M Units

Limit Limit Limit

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

%

DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for T

Symbol Parameter Conditions Typ

V

OS

TCV

Input Offset Voltage 0.9 2.0 3.0 3.0 mV

Input Offset Voltage 2.0 µV/˚C

OS

=

J

25˚C, V

+

=

(Note 5)

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

CM

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

+

V

+ 0.25 V

2kΩto V

+

/2 2.8 V

V

O

Output Swing R

=

L

0.2 V

R

L

=

600Ω to V

+

/2 2.7 2.5 2.5 2.5 V

0.37 0.6 0.6 0.6 V

I

S

Supply Current Both Amplifiers 0.825 1.2 1.2 1.2 mA

3V, V

−

=

0V, V

CM

+

=

/2 and R

V

O

>

L

LMC6482AI LMC6482I LMC6482M Units

Limit Limit Limit

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

2.7 3.7 3.8 max

+

V

1.5 1.5 1.6 max

1M.

V

+

V

min

max

AC Electrical Characteristics

Unless otherwise specified, V

Symbol Parameter Conditions Typ

+

=

3V, V

−

=

0V, V

CM

+

=

/2, and R

V

O

>

L

(Note 5)

1M.

LMC6482AI LMC6482I LMC6482M Units

Limit Limit Limit

(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 limts 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 1 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

maximum 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 parameters see RETS6482X.

=

+

=

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

=

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

L

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

J(max)

±

30 mA over long term may adversely affect reliability.

=

O

12 V

=

(T

D

J(max)

.

PP

Typical Performance Characteristics V

specified

Supply Current vs Supply Voltage

DS011713-40

Sourcing Current vs Output Voltage

Input Current vs Temperature

Sourcing Current vs Output Voltage

=

+15V, Single Supply, T

S

DS011713-41

=

25˚C unless otherwise

A

Sourcing Current vs Output Voltage

Sinking Current vs Output Voltage

DS011713-42

DS011713-43

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DS011713-44

DS011713-45

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

Input Voltage Noise vs Input Voltage

DS011713-46

DS011713-49

Sinking Current vs Output Voltage

Input Voltage Noise vs Input Voltage

Crosstalk Rejection vs Frequency

DS011713-47

DS011713-50

Output Voltage Swing vs Supply Voltage

DS011713-48

Input Voltage Noise vs Input Voltage

DS011713-51

DS011713-52

DS011713-53

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