OPERATIONAL AMPLIFIER. LF351 Datasheet


LF351 AMPLIFIER. Datasheet pdf. Equivalent


Part Number

LF351

Description

WIDE-BANDWIDTH JFET-INPUT OPERATIONAL AMPLIFIER

Manufacture

etcTI

Total Page 3 Pages
Datasheet
Download LF351 Datasheet


LF351
Low Input Bias Current . . . 50 pA Typ
Low Input Noise Voltage . . . 18 nV/Hz Typ
Low Input Noise Current
0.01 pA/Hz Typ
Low Supply Current . . . 1.8 mA Typ
High Input impedance . . . 1012 Typ
Low Total Harmonic Distortion
Internally Trimmed Offset Voltage
10 mV Typ
High Slew Rate . . . 13 V/µs Typ
Wide Gain Bandwidth . . . 3 MHz
Pin Compatible With Standard 741
LF351
WIDE-BANDWIDTH JFET-INPUT
OPERATIONAL AMPLIFIER
SLOS014B – MARCH 1987 – REVISED AUGUST 1994
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 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)
2
IN – – 6
3 OUT
IN + +
BAL1
BAL2
1
5
AVAILABLE OPTIONS
PACKAGE
TA
VIOmax
AT 25°C
SMALL OUTLINE PLASTIC DIP
(D) (P)
0°C to 70°C
10 mV
LF351D
LF351P
The D packages are available taped and reeled. Add the suffix R to the
device type (ie., LF351DR).
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
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.
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.
Copyright © 1994, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443
2–1

LF351
LF351
WIDE-BANDWIDTH JFET-INPUT
OPERATIONAL AMPLIFIER
SLOS014B – MARCH 1987 – REVISED AUGUST 1994
recommended operating conditions
Supply voltage, VCC +
Supply voltage, VCC
MIN
3.5
– 3.5
MAX
18
– 18
UNIT
V
V
electrical characteristics over operating free-air temperature range, VCC± = ±15 V (unless
otherwise noted)
PARAMETER
VIO Input offset voltage
TEST CONDITIONS
VIC = 0,
RS = 10 k
TA†
25°C
Full range
MIN TYP MAX UNIT
5 10
mV
13
αVIO
Average temperature coefficient of input offset
voltage
VIC = 0,
RS = 10 k
10 µV/°C
IIO Input offset current‡
IIB Input bias current‡
VIC = 0
VIC = 0
25°C
70°C
25°C
70°C
25 100 pA
4 nA
50 200 pA
8 nA
VICR Common-mode input voltage range
– 12
± 11 to
15
V
VOM Maximum peak output voltage swing
RL = 10 k
± 12 ± 13.5
V
AVD Large-signal differential voltage
VO = ± 10 V, RL = 2 k
25°C
Full range
25 200
15 200
V/mV
ri Input resistance
TJ = 25°C
1012
CMRR Common-mode rejection ratio
RS 10 k
70 100
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
SR Slew rate
B1 Unity-gain bandwidth
Vn Equivalent input noise voltage
In Equivalent input noise current
TEST CONDITIONS
f = 1 kHz,
f = 1 kHz
RS = 20
MIN TYP MAX UNIT
8 13
V/µs
3 MHz
18 nV/Hz
0.01 pA/Hz
2–2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443


Features • Low Input Bias Current . . . 50 pA T yp • Low Input Noise Voltage . . . 18 nV/√Hz Typ • Low Input Noise Curre nt 0.01 pA/√Hz Typ • Low Supply Cur rent . . . 1.8 mA Typ • High Input im pedance . . . 1012 Ω Typ • Low Tota l Harmonic Distortion • Internally Tr immed Offset Voltage 10 mV Typ • High Slew Rate . . . 13 V/µs Typ • Wide Gain Bandwidth . . . 3 MHz • Pin Comp atible With Standard 741 LF351 WIDE-BA NDWIDTH JFET-INPUT OPERATIONAL AMPLIFIE R SLOS014B – MARCH 1987 – REVISED A UGUST 1994 D OR P PACKAGE (TOP VIEW) B AL1 IN – IN + VCC – 1 2 3 4 8 NC 7 VCC + 6 OUT 5 BAL2 NC – No interna l connection description This device i s a low-cost, high-speed, JFET-input op erational amplifier with an internally trimmed input offset voltage. It requir es low supply current yet maintains a l arge gain-bandwidth product and a fast slew rate. In addition, the matched hig h-voltage JFET input provides very low input bias and offset currents. It uses the same offset voltage adjustment circuits as the 741. The .
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