NSC LMC6574BIM, LMC6574AIMX, LMC6574AIM, LMC6572BIMMX, LMC6572BIMM Datasheet

LMC6572 Dual/LMC6574 Quad Low Voltage (2.7V and 3V) Operational Amplifier

December 1996

General Description

Low voltage operation and low power dissipation make the LMC6574/2 ideal for battery-powered systems.

3V amplifier performance is backed by 2.7V guarantees to ensure operation throughout battery lifetime. These guarantees also enable analog circuits to operate from the same

3.3V supply used for digital logic. Battery life is maximized because each amplifier dissipates

only micro-watts of power. The LMC6574/2 does not sacrifice functionality for low volt-

age operation. The LMC6574/2 generates 120 dB of open-loop gain just like a conventional amplifier, but the LMC6574/2 can do this from a 2.7V supply.

These amplifiers are designed with features that optimize low voltage operation. The output voltage swings rail-to-rail to maximize signal-to-noise ratio and dynamic signal range. The common-mode input voltage range extends from 800 mV below the positive supply to 100 mV below ground.

This device is built with National’s advanced Double-Poly Silicon-Gate CMOS process.

LMC6572 is also available in MSOP package which is almost half the size of a SO-8 device.

Connection Diagrams

8-Pin DIP/SO/MSOP

Features

(Typical unless otherwise noted)

n Guaranteed 2.7V and 3V Performance n Rail-to-Rail Output Swing (within 5 mV of supply rail,

100 kΩ load)

n Ultra-Low Supply Current: 40 µA/Amplifier n Low Cost n Ultra-Low Input Current: 20 fA n High Voltage Gain n Specified for 100 kΩ and 5 kΩ loads n Available in MSOP Package

=

@

V

S

2.7V, R

=

100 kΩ: 120 dB

L

Applications

n Transducer Amplifier n Portable or Remote Equipment n Battery-Operated Instruments n Data Acquisition Systems n Medical Instrumentation n Improved Replacement for TLV2322 and TLV2324

14-Pin DIP/SO

DS011934-1

Order Number LMC6572AIN, LMC6572BIN,

LMC6572AIM, LMC6572BIM or LMC6572BIMM

See NS Package Number N08E, M08A or MUA08A

Order Number LMC6574AIN, LMC6574BIN,

LMC6574AIM or LMC6574BIM

See NS Package Number N14A or M14A

DS011934-2

Ordering Information

Package Temperature Range NSC Drawing Transport

Industrial, −40˚C to +85˚C Media

8-Pin Molded DIP LMC6572AIN, LMC6572BIN N08E Rail 8-Pin Small Outline LMC6572AIM, LMC6572BIM M08A Rail

LMC6572AIMX, LMC6572BIMX Tape and Reel

8-Pin Mini SO LMC6572BIMM MUA08A Rail

LMC6572BIMMX Tape and Reel 14-Pin Molded DIP LMC6574AIN, LMC6574BIN N14A Rail 14-Pin Small Outline LMC6574AIM, LMC6574BIM M14A Rail

LMC6574AIMX, LMC6574BIMX Tape and Reel

www.national.com 2

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) 2000V Differential Input Voltage Voltage at Input/Output Pin (V

+−V−

Supply Voltage (V

) 12V Current at Input Pin Current at Output Pin (Note 3) Current at Power Supply Pin 35 mA Lead Temperature

(Soldering, 10 Seconds) 260˚C

Storage Temperature Range −65˚C to +150˚C

±

Supply Voltage

+

) +0.3V,

−

) −0.3V

(V

±

10 mA

5mA

Junction Temperature (Note 4) 150˚C

Operating Ratings (Note 1)

Supply Voltage 2.7V ≤ V Junction Temperature Range

LMC6572AI, LMC6572BI −40˚C ≤ T LMC6574AI, LMC6574BI −40˚C ≤ T

Thermal Resistance (θ

)

JA

N Package, 8-Pin Molded DIP 115˚C/W M Package, 8-Pin Surface Mount 193˚C/W MSOP Package, 8-Pin Mini SO 217˚C/W N Package, 14-Pin Molded DIP 81˚C/W M Package, 14-Pin Surface Mount 126˚C/W

+

≤ 11V

≤ +85˚C

J

≤ +85˚C

J

2.7V DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for T

face limits apply at the temperature extremes.

Symbol Parameter Conditions Typ

+

V

OS

TCV

Input Offset Voltage V

Input Offset Voltage 1.5 µV/˚C

OS

=

2.7V and 3V 0.5 3 7 mV

=

J

25˚C. V

+

=

2.7V, V

−

=

(Note 5)

Average Drift

I

B

I

OS

R C

Input Current 0.02 pA

Input Offset Current 0.01 pA

Input Resistance

IN

Common-Mode 3 pF

IN

>

Input Capacitance

CMRR Common Mode 0V ≤ V

Rejection Ratio V

+PSRR Positive Power Supply 2.7V ≤ V

Rejection Ratio V

−PSRR Negative Power Supply −2.7V ≤ V Rejection Ratio V

V

Input Common-Mode V

CM

≤ 3.5V 75 63 60 dB

CM

+

=

5V 60 57 Min

+

≤ 5V, 75 67 60 dB

−

=

0V 65 58 Min

− + +

≤ −5V, 83 75 67 dB

=

0V 73 65 Min

=

2.7V and 3V −0.1 −0.05 −0.05 V

Voltage Range for CMRR ≥ 50 dB 00Max

+

V

− 0.8 V+− 1.0 V+− 1.0 V

A

Large Signal R

V

=

100 kΩ Sourcing 1000 V/mV

L

Voltage Gain (Note 7)

Sinking 500 V/mV

0V, V

=

/2 and R

V

CM

V

O

>

1MΩ. Bold-

L

+

=

LMC6574AI LMC6574BI Units LMC6572AI LMC6572BI

Limit Limit

(Note 6) (Note 6)

3.5 7.5 Max

10 10 Max

66Max

1 Tera Ω

+

V

− 1.3 V+− 1.3 Min

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2.7V DC Electrical Characteristics (Continued)

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

=

J

25˚C. V

+

=

Symbol Parameter Conditions Typ

+

V

I

SC

Output Swing V

O

Output Short Sourcing, V

=

2.7V 2.695 2.68 2.65 V

=

R

100 kΩ to V

L

+

=

V

2.7V 2.66 2.55 2.45 V

=

R

5kΩto V

L

+

=

V

3V 2.995 2.98 2.95 V

=

R

100 kΩ to V

L

+

=

V

3V 2.96 2.85 2.75 V

=

R

5kΩto V

L

+

/2 2.66 2.62 Min

+

/2 2.45 2.35 Min

+

/2 2.96 2.93 Min

+

/2 2.75 2.65 Min

=

0V 6.0 4.0 3.0 mA

O

Circuit Current 3.0 2.0 Min

=

+2.7V, V

=

2.7V 4.0 3.0 2.5 mA

O

+

=

/2 280 280 Max

V

O

Sinking, V

I

S

Supply Current Quad Package 160 240 240 µA

+

V Quad Package 160 240 240 µA

+

=

V

+3V, V

+

=

/2 280 280 Max

V

O

Dual Package 80 120 120 µA V

+

=

+2.7V, V

+

=

/2 140 140 Max

V

O

Dual Package 80 120 120 µA

+

=

V

+3V, V

+

=

/2 140 140 Max

V

O

−

=

2.7V, V

(Note 5)

0.005 0.03 0.06 V

0.04 0.15 0.25 V

0.005 0.03 0.06 V

0.04 0.15 0.25 V

+

=

0V, V

CM

/2 and R

V

O

LMC6574AI LMC6574BI Units LMC6572AI LMC6572BI

Limit Limit

(Note 6) (Note 6)

0.05 0.09 Max

0.25 0.35 Max

0.05 0.09 Max

0.25 0.35 Max

2.0 1.5 Min

>

1MΩ. Bold-

L

2.7V AC Electrical Characteristics

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

J

=

25˚C, V

+

=

2.7V, V

Symbol Parameter Conditions Typ

+

=

SR Slew Rate V

2.7V and 3V 90 30 30 V/ms

(Note 8) 10 10 Min

+

GBW Gain-Bandwidth Product V

φ

m

G

m

Phase Margin 60 Deg Gain Margin 12 dB

=

3V 0.22 MHz

Amp-to-Amp Isolation (Note 9) 120 dB

e

n

i

n

www.national.com 4

Input-Referred F=1 kHz 45 nV/√Hz Voltage Noise V

=

1V

CM

Input-Referred F=1 kHz 0.002 pA/√Hz

−

=

0V, V

(Note 5)

+

=

/2 and R

V

CM

V

O

>

1MΩ.Bold-

L

LMC6574AI LMC6574BI Units LMC6572AI LMC6572BI

Limit Limit

(Note 6) (Note 6)

NSC LMC6574BIM, LMC6574AIMX, LMC6574AIM, LMC6572BIMMX, LMC6572BIMM Datasheet

Specifications and Main Features

Frequently Asked Questions

User Manual