LF411 AMPLIFIER Datasheet

LF411 Datasheet, PDF, Equivalent


Part Number

LF411

Description

JFET-INPUT OPERATIONAL AMPLIFIER

Manufacture

etcTI

Total Page 12 Pages
Datasheet
Download LF411 Datasheet


LF411
LF411
JFET-INPUT OPERATIONAL AMPLIFIER
D Low Input Bias Current, 50 pA Typ
D Low Input Noise Current, 0.01 pA/Hz Typ
D Low Supply Current, 2 mA Typ
D High Input impedance, 1012 Typ
D Low Total Harmonic Distortion
D Low 1/f Noise Corner, 50 Hz Typ
D Package Options Include Plastic
Small-Outline (D) and Standard (P) DIPs
SLOS011C – MARCH 1987 – REVISED OCTOBER 1997
D OR P PACKAGE
(TOP VIEW)
BAL1
IN –
IN +
VCC –
1
2
3
4
8 NC
7 VCC +
6 OUT
5 BAL2
NC – No internal connection
description
This device is a low-cost, high-speed, JFET-input operational amplifier with very low input offset voltage and
a maximum input offset voltage drift. It requires low supply current, yet maintains a large gain-bandwidth product
and a fast slew rate. In addition, the matched high-voltage JFET input provides very low input bias and offset
currents.
The LF411 can be used in applications such as high-speed integrators, digital-to-analog converters,
sample-and-hold circuits, and many other circuits.
The LF411C is characterized for operation from 0°C to 70°C. The LF411I is characterized for operation from
–40°C to 85°C.
symbol
IN –
IN +
BAL1
BAL2
2
3
1
5
+
6
OUT
AVAILABLE OPTIONS
PACKAGE
TA
VIOmax
AT 25°C
SMALL OUTLINE PLASTIC DIP
(D) (P)
0°C to 70°C
2 mV
LF411CD
LF411CP
–40°C to 85°C 2 mV
LF411ID
LF411IP
The D packages are available taped and reeled. Add the suffix R to the
device type (i.e., LF411CDR).
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1997, Texas Instruments Incorporated
1

LF411
LF411
JFET-INPUT OPERATIONAL AMPLIFIER
SLOS011C – MARCH 1987 – REVISED OCTOBER 1997
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
Supply voltage, VCC +
Supply voltage, VCC
Operating free-air temperature, TA
C SUFFIX
MIN MAX
3.5 18
– 3.5 – 18
0 70
I SUFFIX
MIN MAX
3.5 18
– 3.5 – 18
– 40 –85
UNIT
V
V
°C
electrical characteristics over operating free-air temperature range, VCC± = ±15 V (unless otherwise
specified)
PARAMETER
TEST CONDITIONS
TA
LF411C
LF411I
MIN TYP MAX UNIT
VIO
αVIO
Input offset voltage
Average temperature coeffi-
cient of input offset voltage
VIC = 0,
VIC = 0,
RS = 10 k
RS = 10 k
25°C
25°C
0.8 2 mV
10 20† µV/°C
IIO Input offset current‡
VIC = 0
25°C
70°C
25°C
85°C
25 100 pA
2 nA
IIB Input bias current‡
VIC = 0
25°C
70°C
25°C
85°C
50 200 pA
4 nA
VICR
Common-mode input voltage
range
–11.5
± 11 to
14.5
V
VOM
Maximum peak output-voltage
swing
RL = 10 k
± 12 ± 13.5
V
AVD
ri
CMR
R
Large-signal differential
voltage
Input resistance
VO = ± 10 V,
TJ = 25°C
Common-mode rejection ratio RS 10 k
RL = 2 k
25°C
25°C
0°C to 70°C –40°C to 85°C
25 200
15 200
1012
70 100
V/mV
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.
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Features LF411 JFET-INPUT OPERATIONAL AMPLIFIER D Low Input Bias Current, 50 pA Typ D L ow Input Noise Current, 0.01 pA/√Hz T yp D Low Supply Current, 2 mA Typ D Hig h Input impedance, 1012 Ω Typ D Low T otal Harmonic Distortion D Low 1/f Nois e Corner, 50 Hz Typ D Package Options I nclude Plastic Small-Outline (D) and St andard (P) DIPs SLOS011C – MARCH 198 7 – REVISED OCTOBER 1997 D OR P PACKA GE (TOP VIEW) BAL1 IN – IN + VCC – 1 2 3 4 8 NC 7 VCC + 6 OUT 5 BAL2 N C – No internal connection descripti on This device is a low-cost, high-spee d, JFET-input operational amplifier wit h very low input offset voltage and a m aximum input offset voltage drift. It r equires low supply current, yet maintai ns a large gain-bandwidth product and a fast slew rate. In addition, the match ed high-voltage JFET input provides ver y low input bias and offset currents. T he LF411 can be used in applications su ch as high-speed integrators, digital-t o-analog converters, sample-and-hold circuits, and many other circuits. The L.
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