LF347D [TI]
JFET-INPUT QUAD OPERATIONAL AMPLIFIERS; JFET输入四路运算放大器
| 型号： | LF347D |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | JFET-INPUT QUAD OPERATIONAL AMPLIFIERS |
| 文件： | 总3页 (文件大小：51K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
LF347, LF347B
JFET-INPUT
QUAD OPERATIONAL AMPLIFIERS
SLOS013B – MARCH 1987 – REVISED AUGUST 1994
DISSIPATION RATING TABLE
T ≤ 25°C
DERATING
FACTOR
DERATE
ABOVE T
T = 70°C
A
POWER RATING
A
PACKAGE
POWER RATING
A
D
N
608 mW
680 mW
7.6 mW/°C
61°C
N/A
608 mW
680 mW
N/A
recommended operating conditions
MIN
3.5
MAX
18
UNIT
V
Supply voltage, V
Supply voltage, V
CC +
CC –
–3.5
–18
V
electrical characteristics over operating free-air temperature range, V
otherwise specified)
= ±15 V (unless
CC±
LF347
TYP
5
LF347B
UNIT
TEST
CONDITIONS
†
PARAMETER
T
A
MIN
MAX
10
MIN
TYP
MAX
25°C
3
5
7
V
R
= 0,
= 10 kΩ
IC
S
V
IO
Input offset voltage
mV
Full range
13
Average temperature coefficient of
input offset voltage
V
R
= 0,
= 10 kΩ
IC
S
α
18
25
18
25
µV/°C
VIO
25°C
70°C
25°C
70°C
100
4
100
4
pA
nA
pA
nA
‡
I
IO
V
= 0
= 0
Input offset current
IC
IC
50
200
8
50
200
8
‡
I
IB
V
Input bias current
–12
to
15
–12
to
15
V
V
Common-mode input voltage range
±11
±11
V
ICR
Maximum peak output voltage swing
Large-signal differential voltage
Input resistance
R
= 10 kΩ
±12 ±13.5
±12 ±13.5
V
OM
L
25°C
25
15
100
50
25
100
V
R
= ±10 V,
= 2 kΩ
O
A
VD
V/mV
Full range
L
12
10
12
10
r
i
T
A
= 25°C
≤ 2 kΩ
Ω
CMRR Common-mode rejection ratio
R
70
70
100
100
8
80
80
100
100
8
dB
dB
mA
S
k
Supply-voltage rejection ratio
Supply current
See Note 2
SVR
I
11
11
CC
†
‡
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, V
= ±15 V
CC±
PARAMETER
Crosstalk attentuation
TEST CONDITIONS
f = 1 kHz
MIN
TYP
120
13
MAX
UNIT
dB
V
/V
O1 O2
SR
Slew rate
8
V/µs
B
V
Unity-gain bandwidth
Equivalent input noise voltage
Equivalent input noise current
3
MHz
1
f = 1 kHz,
f = 1 kHz
R
= 20 Ω
18
nV/√Hz
pA/√Hz
n
S
I
n
0.01
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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any product or service without notice, and advise customers to obtain the latest version of relevant information
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pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
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
performed, except those mandated by government requirements.
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DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
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Copyright 1998, Texas Instruments Incorporated
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