LF347, LF347B
JFET-INPUT
QUAD OPERATIONAL AMPLIFIERS
SLOS013B – MARCH 1987 – REVISED AUGUST 1994
D OR N PACKAGE
(TOP VIEW)
Low Input Bias Current . . . 50 pA Typ
Low Input Noise Current
0.01 pA/√Hz Typ
1OUT
1IN –
1IN+
1
2
3
4
5
6
7
14 4OUT
13 4IN–
12 4IN +
Low Total Harmonic Distortion
Low Supply Current . . . 8 mA Typ
Gain Bandwidth . . . 3 MHz Typ
High Slew Rate . . . 13 V/µs Typ
Pin Compatible With the LM348
V
11
10
9
V
CC+
CC –
2IN+
2IN–
2OUT
3IN+
3IN–
3OUT
8
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
PACKAGE
V
max
IO
T
A
SMALL OUTLINE
(D)
PLASTIC DIP
(N)
AT 25°C
10 mV
5 mV
LF347D
LF347N
0°C to 70°C
LF347BD
LF347BN
TheDpackagesareavailabletapedandreeled. AddRsuffixtothedevice
type (e.g., LF347DR).
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –18 V
CC +
CC –
Supply voltage V
,
Differential input voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±30 V
ID
Input voltage, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±15 V
I
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
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