LF347, LF347B
JFET-INPUT
QUAD OPERATIONAL AMPLIFIERS
SLOS013B – 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 Current
0.01 pA/√Hz Typ
D
Low Total Harmonic Distortion
D
Low Supply Current... 8 mA Typ
D
Gain Bandwidth...3 MHz Typ
D
High Slew Rate...13 V/µs Typ
D
Pin Compatible With the LM348
description
These devices are low-cost, high-speed, JFET-input operational amplifiers. They require low supply current yet
maintain a large gain-bandwidth product and a fast slew rate. In addition, their matched high-voltage JFET
inputs provide very low input bias and offset current.
The LF347 and LF347B can be used in applications such as high-speed integrators, digital-to-analog
converters, sample-and-hold circuits, and many other circuits.
The LF347 and LF347B are characterized for operation from 0°C to 70°C.
symbol (each amplifier)
–
+
IN –
IN + OUT
AVAILABLE OPTIONS
VIOmax
PACKAGE
TA
V
IO
max
AT 25°CSMALL OUTLINE
(D) PLASTIC DIP
(N)
0
°
Cto70
°
C
10 mV LF347D LF347N
0°C
to
70°C
5 mV LF347BD LF347BN
The D packages are available taped and reeled. Add R suffix to the device
type (e.g., LF347DR).
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 See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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.
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
5
6
7
14
13
12
11
10
9
8
1OUT
1IN –
1IN+
VCC+
2IN+
2IN–
2OUT
4OUT
4IN–
4IN +
VCC –
3IN+
3IN–
3OUT
D OR N PACKAGE
(TOP VIEW)
LF347, LF347B
JFET-INPUT
QUAD OPERATIONAL AMPLIFIERS
SLOS013B – MARCH 1987 – REVISED AUGUST 1994
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
DISSIPATION RATING TABLE
PACKAGE TA ≤ 25°C
POWER RATING DERATING
FACTOR DERATE
ABOVE TATA = 70°C
POWER RATING
D
N608 mW
680 mW 7.6 mW/°C
N/A 61°C
N/A 608 mW
680 mW
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 specified)
PARAMETER
TEST
T†
LF347 LF347B
UNIT
PARAMETER
CONDITIONS
T
A
†
MIN TYP MAX MIN TYP MAX
UNIT
VIO
In
p
ut offset voltage
V
IC
= 0, 25°C 5 10 3 5
mV
V
IO
Inp
u
t
offset
v
oltage
IC ,
RS = 10 kΩFull range 13 7
mV
αVIO Average temperature coef ficient of
input offset voltage VIC = 0,
RS = 10 kΩ18 18 µV/°C
IIO
Inp t offset c rrent‡
VIC =0
25°C 25 100 25 100 pA
I
IO
I
nput o
ff
set current
‡
V
IC =
0
70°C 4 4 nA
IIB
Inp t bias c rrent‡
VIC =0
25°C 50 200 50 200 pA
I
IB
I
nput
bi
as current
‡
V
IC =
0
70°C 8 8 nA
VICR Common-mode input voltage range ±11 –12
to
15 ±11 –12
to
15 V
VOM Maximum peak output voltage swing RL = 10 kΩ±12 ±13.5 ±12 ±13.5 V
AVD
Large signal differential voltage
V
O
= ±10 V, 25°C 25 100 50 100
V/mV
A
VD
Large
-
signal
differential
v
oltage
O,
RL = 2 kΩFull range 15 25
V/mV
riInput resistance TA = 25°C 1012 1012 Ω
CMRR Common-mode rejection ratio RS ≤ 2 kΩ70 100 80 100 dB
kSVR Supply-voltage rejection ratio See Note 2 70 100 80 100 dB
ICC Supply current 8 11 8 11 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
VO1/VO2 Crosstalk attentuation f = 1 kHz 120 dB
SR Slew rate 8 13 V/µs
B1Unity-gain bandwidth 3 MHz
VnEquivalent input noise voltage f = 1 kHz, RS = 20 Ω18 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)
LF347BD ACTIVE SOIC D 14 50 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
LF347BDE4 ACTIVE SOIC D 14 50 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
LF347BDG4 ACTIVE SOIC D 14 50 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
LF347BDR ACTIVE SOIC D 14 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
LF347BDRE4 ACTIVE SOIC D 14 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
LF347BDRG4 ACTIVE SOIC D 14 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
LF347BN ACTIVE PDIP N 14 25 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
LF347BNE4 ACTIVE PDIP N 14 25 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
LF347D ACTIVE SOIC D 14 50 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
LF347DE4 ACTIVE SOIC D 14 50 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
LF347DG4 ACTIVE SOIC D 14 50 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
LF347DR ACTIVE SOIC D 14 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
LF347DRE4 ACTIVE SOIC D 14 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
LF347DRG4 ACTIVE SOIC D 14 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
LF347N ACTIVE PDIP N 14 25 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
LF347NE4 ACTIVE PDIP N 14 25 Pb-Free
(RoHS) CU NIPDAU N / A for Pkg Type
(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), Pb-Free (RoHS Exempt), 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.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
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)
PACKAGE OPTION ADDENDUM
www.ti.com 23-Apr-2007
Addendum-Page 1
(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
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
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
to Customer on an annual basis.
PACKAGE OPTION ADDENDUM
www.ti.com 23-Apr-2007
Addendum-Page 2
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
LF347BDR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1
LF347DR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 20-Aug-2011
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
LF347BDR SOIC D 14 2500 333.2 345.9 28.6
LF347DR SOIC D 14 2500 333.2 345.9 28.6
PACKAGE MATERIALS INFORMATION
www.ti.com 20-Aug-2011
Pack Materials-Page 2
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