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
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accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty . Specific testing of all parameters of each device is not necessarily
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Copyright 1998, Texas Instruments Incorporated
