LF411

JFET-INPUT OPERATIONAL AMPLIFIER

SLOS011C – MARCH 1987 – REVISED OCTOBER 1997

2

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage, VCC+

18 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Supply voltage, VCC–

– 18 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Differential input voltage, VID

±30 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage, VI (see Note 1)

±15 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Duration of output short circuit

Unlimited

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous total power dissipation

500 mW

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance,

θJA (see Note 2): D package

197

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

P package

104

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, Tstg

–65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds

260

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NOTES:

1. Unless otherwise specified, the absolute maximum negative input voltage is equal to the negative power supply voltage.

2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace

length of zero.

recommended operating conditions

C SUFFIX

I SUFFIX

UNIT

MIN

MAX

MIN

MAX

UNIT

Supply voltage, VCC +

3.5

18

3.5

18

V

Supply voltage, VCC –

– 3.5

–18

– 3.5

–18

V

Operating free-air temperature, TA

0

70

–40

–85

°C

electrical characteristics over operating free-air temperature range, VCC± = ±15 V (unless otherwise

specified)

PARAMETER

TEST CONDITIONS

TA

MIN

TYP

MAX

UNIT

PARAMETER

TEST CONDITIONS

LF411C

LF411I

MIN

TYP

MAX

UNIT

VIO

Input offset voltage

VIC = 0,

RS = 10 kΩ

25

°C

25

°C

0.8

2

mV

αVIO

Average temperature coeffi-

cient of input offset voltage

VIC = 0,

RS = 10 kΩ

10

20†

µV/°C

IIO

Inp t offset c rrent‡

VIC =0

25

°C

25

°C

25

100

pA

IIO

Input offset current‡

VIC = 0

70

°C

85

°C

2

nA

IIB

Inp t bias c rrent‡

VIC =0

25

°C

25

°C

50

200

pA

IIB

Input bias current‡

VIC = 0

70

°C

85

°C

4

nA

VICR

Common-mode input voltage

range

±11

–11.5

to

14.5

V

VOM

Maximum peak output-voltage

swing

RL = 10 kΩ

±12 ±13.5

V

AVD

Large-signal differential

VO = ± 10 V

RL =2kΩ

25

°C

25

°C

25

200

V/mV

AVD

gg

voltage

VO = ± 10 V,

RL = 2 kΩ

0

°C to 70°C

–40

°C to 85°C

15

200

V/mV

ri

Input resistance

TJ = 25°C

1012

Ω

CMR

R

Common-mode rejection ratio

RS ≤ 10 kΩ

70

100

dB

kSVR

Supply-voltage rejection ratio

See Note 3

70

100

dB

ICC

Supply current

2

3.4

mA

† At least 90% of the devices meet this limit for

αVIO.

‡ Input bias currents of an FET-input operational amplifier are normal junction reverse currents, which are temperature sensitive. Pulse techniques

must be used that will maintain the junction temperatures as close to the ambient temperature as possible.

NOTE 3: Supply-voltage rejection ratio is measured for both supply magnitudes increasing or decreasing simultaneously.