LF351
JFET-INPUT
OPERATIONAL AMPLIFIER
SLOS014B – MARCH 1987 – REVISED AUGUST 1994
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Low Input Bias Current...50 pA Typ
D
Low Input Noise Voltage . . . 18 nV/√Hz Typ
D
Low Input Noise Current
0.01 pA/√Hz Typ
D
Low Supply Current...1.8 mA Typ
D
High Input impedance...10
12 Ω Typ
D
Low Total Harmonic Distortion
D
Internally Trimmed Offset Voltage
10 mV Typ
D
High Slew Rate...13 V/µs Typ
D
Gain Bandwidth...3 MHz
D
Pin Compatible With Standard 741
description
This device is a low-cost, high-speed, JFET-input operational amplifier with an internally trimmed input offset
voltage. 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. It uses the same
offset voltage adjustment circuits as the 741.
The LF351 can be used in applications such as high-speed integrators, digital-to-analog converters,
sample-and-hold circuits, and many other circuits.
The LF351 is characterized for operation from 0°C to 70°C.
symbol (each amplifier)
–
+
IN –
IN + OUT
BAL1
BAL2
2
3
1
5
6
AVAILABLE OPTIONS
VIOmax
PACKAGE
TA
VIOmax
AT 25°CSMALL OUTLINE
(D) PLASTIC DIP
(P)
0°C to 70°C10 mV LF351D LF351P
The D packages are available taped and reeled. Add the suffix R to the
device type (i.e., LF351DR).
Copyright 1994, Texas Instruments Incorporated
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.
1
2
3
4
8
7
6
5
BAL1
IN–
IN+
VCC–
NC
VCC+
OUT
BAL2
D OR P PACKAGE
(TOP VIEW)
NC – No internal connection
LF351
JFET-INPUT
OPERATIONAL AMPLIFIER
SLOS014B – MARCH 1987 – REVISED AUGUST 1994
2POST 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, V ID ±30 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI (see Note 1) ±15 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Duration of output short circuit unlimited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation 500 mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating temperature range 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NOTE 1: Unless otherwise specified, the absolute maximum negative input voltage is equal to the negative power supply voltage.
recommended operating conditions
MIN MAX UNIT
Supply voltage, VCC + 3.5 18 V
Supply voltage, VCC – –3.5 –18 V
electrical characteristics over operating free-air temperature range, VCC± = ±15 V (unless
otherwise noted)
PARAMETER TEST CONDITIONS TA†MIN TYP MAX UNIT
VIO
In
p
ut offset voltage
VIC =0
RS=10kΩ
25°C 5 10
mV
V
IO
Inp
u
t
offset
v
oltage
V
IC =
0
,
R
S =
10
kΩ
Full range 13
mV
αVIO Average temperature coefficient of input offset
voltage VIC = 0, RS = 10 kΩ10 µV/°C
IIO
Inp t offset c rrent‡
VIC =0
25°C 25 100 pA
I
IO
I
nput o
ff
set current
‡
V
IC =
0
70°C 4 nA
IIB
Inp t bias c rrent‡
VIC =0
25°C 50 200 pA
I
IB
I
nput
bi
as current
‡
V
IC =
0
70°C 8 nA
VICR Common-mode input voltage range ±11 –12
to
15 V
VOM Maximum peak output voltage swing RL = 10 kΩ±12 ±13.5 V
AVD
Large signal differential voltage
VO=±10 V
RL=2kΩ
25°C 25 200
V/mV
A
VD
Large
-
signal
differential
v
oltage
V
O =
±10
V
,
R
L =
2
kΩ
Full range 15 200
V/mV
riInput resistance TJ = 25°C 1012 Ω
CMRR Common-mode rejection ratio RS ≤ 10 kΩ70 100 dB
kSVR Supply-voltage rejection ratio See Note 2 70 100 dB
ICC Supply current 1.8 3.4 mA
†Full range is 0°C to 70°C.
‡Input bias currents of a 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 2: Supply-voltage rejection ratio is measured for both supply magnitudes increasing or decreasing simultaneously.
operating characteristics, VCC± = ±15 V
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SR Slew rate 8 13 V/µs
B1Unity-gain bandwidth 3 MHz
VnEquivalent input noise voltage f = 1 kHz , RS = 20 Ω 18 nV/√Hz
InEquivalent input noise current f = 1 kHz 0.01 pA/√Hz
PACKAGING INFORMATION
Orderable Device Status (1) Package
Type Package
Drawing Pins Package
Qty Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
LF351D OBSOLETE SOIC D 8 TBD Call TI Call TI
LF351DR OBSOLETE SOIC D 8 TBD Call TI Call TI
LF351P OBSOLETE PDIP P 8 TBD Call TI Call TI
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
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In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
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PACKAGE OPTION ADDENDUM
www.ti.com 30-Mar-2005
Addendum-Page 1
MECHANICAL DATA
MPDI001A – JANUARY 1995 – REVISED JUNE 1999
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
P (R-PDIP-T8) PLASTIC DUAL-IN-LINE
8
4
0.015 (0,38)
Gage Plane
0.325 (8,26)
0.300 (7,62)
0.010 (0,25) NOM
MAX
0.430 (10,92)
4040082/D 05/98
0.200 (5,08) MAX
0.125 (3,18) MIN
5
0.355 (9,02)
0.020 (0,51) MIN
0.070 (1,78) MAX
0.240 (6,10)
0.260 (6,60)
0.400 (10,60)
1
0.015 (0,38)
0.021 (0,53)
Seating Plane
M
0.010 (0,25)
0.100 (2,54)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-001
For the latest package information, go to http://www.ti.com/sc/docs/package/pkg_info.htm
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