NSC LF353N, LF353MX, LF353M Datasheet
April 1998
LF353
Wide Bandwidth Dual JFET Input Operational Amplifier
LF353 Wide Bandwidth Dual JFET Input Operational Amplifier
General Description
These devices are low cost, high speed, dual JFET input operational amplifiers with an internally trimmed input offset
voltage (BI-FET II
current yet maintain a large gain bandwidth product and fast
slew rate. In addition, well matched high voltage JFET input
devices provide very low input bias and offset currents. The
LF353 is pin compatible with the standard LM1558 allowing
designers toimmediatelyupgradethe overall performance of
existing LM1558 and LM358 designs.
These amplifiers may be used in applications such as high
speed integrators, fast D/A converters, sample and hold circuits and many other circuits requiring low input offset voltage, low input bias current, high input impedance, high slew
rate and wide bandwidth. The devices also exhibit low noise
and offset voltage drift.
™
technology). They require low supply
Typical Connection
DS005649-14
Simplified Schematic
1/2 Dual
Features
n Internally trimmed offset voltage: 10 mV
n Low input bias current: 50pA
n Low input noise voltage: 25
n Low input noise current: 0.01
n Wide gain bandwidth: 4 MHz
n High slew rate: 13 V/µs
n Low supply current: 3.6 mA
n High input impedance: 10
n Low total harmonic distortion A
RL=10k, V
n Low 1/f noise corner: 50 Hz
n Fast settling time to 0.01%:2µs
=
20Vp−p, BW=20 Hz-20 kHz
O
12
Ω
=
10,:
V
Connection Diagrams
Metal Can Package
DS005649-15
Top View
Order Number LF353H
See NS Package Number H08A
Dual-In-Line Package
<
0.02
%
DS005649-17
Order Number LF353M or LF353N
See NS Package Number M08A or N08E
DS005649-16
BI-FET II™is a trademark of National Semiconductor Corporation.
© 1999 National Semiconductor Corporation DS005649 www.national.com
Top View
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
Power Dissipation (Note 2)
Operating Temperature Range 0˚C to +70˚C
(MAX) 150˚C
T
j
Differential Input Voltage
Input Voltage Range (Note 3)
Output Short Circuit Duration Continuous
Storage Temperature Range −65˚C to +150˚C
Lead Temp. (Soldering, 10 sec.) 260˚C
Soldering Information
Dual-In-Line Package
Soldering (10 sec.) 260˚C
±
18V
±
30V
±
15V
Small Outline Package
Vapor Phase (60 sec.) 215˚C
Infrared (15 sec.) 220˚C
See AN-450 “Surface Mounting Methods and Their Effect
on Product Reliability” for other methods of soldering
surface mount devices.
ESD Tolerance (Note 8) 1700V
M Package TBD
θ
JA
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to
the device may occur. Operating ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. Electrical
Characteristics state DC and AC electrical specifications under particular test
conditions which guarantee specific performance limits. This assumes that
the device is within the Operating Ratings. Specifications are not guaranteed
for parameters where no limit is given, however, the typical value is a good indication of device performance.
DC Electrical Characteristics
(Note 5)
Symbol Parameter Conditions LF353 Units
MIn Typ Max
V
OS
Input Offset Voltage R
=
S
Over Temperature 13 mV
∆V
/∆T Average TC of Input Offset Voltage R
OS
I
OS
I
B
R
IN
A
VOL
Input Offset Current T
Input Bias Current T
Input Resistance T
Large Signal Voltage Gain V
=
S
=
25˚C, (Notes 5, 6) 25 100 pA
j
T
≤70˚C 4 nA
j
=
25˚C, (Notes 5, 6) 50 200 pA
j
T
≤70˚C 8 nA
j
=
25˚C 10
j
=
S
=
V
O
Over Temperature 15 V/mV
V
O
V
CM
Output Voltage Swing V
Input Common-Mode Voltage V
=
S
=
S
Range −12 V
CMRR Common-Mode Rejection Ratio R
≤ 10kΩ 70 100 dB
S
PSRR Supply Voltage Rejection Ratio (Note 7) 70 100 dB
I
S
Supply Current 3.6 6.5 mA
=
10kΩ,T
25˚C 5 10 mV
A
10 kΩ 10 µV/˚C
12
=
±
15V, T
25˚C 25 100 V/mV
A
10V, R
15V, R
15V
L
L
=
=
2kΩ
10kΩ
±
±
±
12
13.5 V
11 +15 V
±
±
±
Ω
AC Electrical Characteristics
(Note 5)
Symbol Parameter Conditions LF353 Units
Min Typ Max
=
Amplifier to Amplifier Coupling T
SR Slew Rate V
GBW Gain Bandwidth Product V
e
n
i
n
Note 2: For operating at elevated temperatures, the device must be derated based on a thermal resistance of 115˚C/W typ junction to ambient for the N package,
and 158˚C/W typ junction to ambient for the H package.
www.national.com 2
Equivalent Input Noise Voltage T
Equivalent Input Noise Current T
25˚C, f=1 Hz−20 kHz −120 dB
A
(Input Referred)
=
S
=
S
=
25˚C, R
A
=
f
1000 Hz
=
25˚C, f=1000 Hz 0.01
j
±
15V, T
±
15V, T
=
25˚C 8.0 13 V/µs
A
=
25˚C 2.7 4 MHz
A
=
100Ω,16
S
AC Electrical Characteristics (Continued)
Note 3: Unless otherwise specified the absolute maximum negative input voltage is equal to the negative power supply voltage.
Note 4: The power dissipation limit, however, cannot be exceeded.
Note 5: These specifications apply for V
Note 6: The input bias currents are junction leakage currents which approximately double for every 10˚C increase in the junction temperature, T
production test time, the input bias currents measured are correlated to junction temperature. In normal operation the junction temperature rises above the ambient
temperature as a result of internal power dissipation, P
mended if input bias current is to be kept to a minimum.
Note 7: Supply voltage rejection ratio is measured for both supply magnitudes increasing or decreasing simultaneously in accordance with common practice. V
±
6V to±15V.
Note 8: Human body model, 1.5 kΩ in series with 100 pF.
=
±
15V and 0˚C≤TA≤+70˚C. VOS,IBand IOSare measured at V
S
D.Tj
=
where θjAis the thermal resistance from junction to ambient. Use of a heat sink is recom-
T
A+θjAPD
=
0.
CM
. Due to the limited
j
S
Typical Performance Characteristics
=
Input Bias Current
DS005649-18
Positive Common-Mode Input
Voltage Limit
Negative Current Limit
DS005649-21
Input Bias Current
DS005649-19
Negative Common-Mode Input
Voltage Limit
DS005649-22
Voltage Swing
Supply Current
DS005649-20
Positive Current Limit
DS005649-23
Output Voltage Swing
DS005649-24
DS005649-25
DS005649-26
www.national.com3
Typical Performance Characteristics (Continued)
Gain Bandwidth
DS005649-27
Distortion vs Frequency
DS005649-30
Common-Mode Rejection Ratio
Bode Plot
DS005649-28
Undistorted Output Voltage Swing
DS005649-31
Power Supply Rejection Ratio
Slew Rate
DS005649-29
Open Loop Frequency Response
DS005649-32
Equivalent Input Noise Voltage
DS005649-33
www.national.com 4
DS005649-34
DS005649-35
Loading...