LF442CN National Semiconductor, LF442CN Datasheet

no-image

LF442CN

Manufacturer Part Number
LF442CN
Description
IC, OP-AMP, 1MHZ, 1V/µs, DIP-8
Manufacturer
National Semiconductor
Datasheet

Specifications of LF442CN

Op Amp Type
Low Power
No. Of Amplifiers
2
Bandwidth
1MHz
Slew Rate
1V/µs
Supply Voltage Range
6V To 36V
Amplifier Case Style
DIP
No. Of Pins
8
Operating Temperature Range
0°C To +70°C
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LF442CN
Manufacturer:
NS
Quantity:
1 440
Part Number:
LF442CN
Manufacturer:
NS
Quantity:
1 000
Part Number:
LF442CN
Manufacturer:
ST
0
Part Number:
LF442CN
Manufacturer:
NS/国半
Quantity:
20 000
© 2004 National Semiconductor Corporation
LF442
Dual Low Power JFET Input Operational Amplifier
General Description
The LF442 dual low power operational amplifiers provide
many of the same AC characteristics as the industry stan-
dard LM1458 while greatly improving the DC characteristics
of the LM1458. The amplifiers have the same bandwidth,
slew rate, and gain (10 kΩ load) as the LM1458 and only
draw one tenth the supply current of the LM1458. In addition
the well matched high voltage JFET input devices of the
LF442 reduce the input bias and offset currents by a factor of
10,000 over the LM1458. A combination of careful layout
design and internal trimming guarantees very low input offset
voltage and voltage drift. The LF442 also has a very low
equivalent input noise voltage for a low power amplifier.
The LF442 is pin compatible with the LM1458 allowing an
immediate 10 times reduction in power drain in many appli-
cations. The LF442 should be used where low power dissi-
pation and good electrical characteristics are the major con-
siderations.
Typical Connection
Ordering Information
LF442XYZ
X indicates electrical grade
Y indicates temperature range
Z indicates package type
BI-FET II
“M” for military
“C” for commercial
“H” or “N”
is a trademark of National Semiconductor Corporation.
DS009155
00915501
Features
n 1/10 supply current of a LM1458:
n Low input bias current: 50 pA (max)
n Low input offset voltage: 1 mV (max)
n Low input offset voltage drift: 10 µV/˚C (max)
n High gain bandwidth: 1 MHz
n High slew rate: 1 V/µs
n Low noise voltage for low power:
n Low input noise current:
n High input impedance: 10
n High gain V
Connection Diagrams
Pin 4 connected to case
Order Number LF442AMH or LF442MH/883
Order Number LF442ACN or LF442CN
See NS Package Number H08A
See NS Package Number N08E
O
=
Dual-In-Line Package
±
Metal Can Package
10V, R
Top View
Top View
L
= 10k: 50k (min)
12
400 µA (max)
00915502
www.national.com
00915504
August 2000

Related parts for LF442CN

LF442CN Summary of contents

Page 1

... Low input noise current: n High input impedance High gain V O Connection Diagrams Pin 4 connected to case Order Number LF442AMH or LF442MH/883 00915501 See NS Package Number H08A Order Number LF442ACN or LF442CN See NS Package Number N08E DS009155 August 2000 400 µA (max) Ω 12 ± = 10V, R ...

Page 2

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. LF442A Supply Voltage Differential Input Voltage Input Voltage Range (Note 2) Output Short Circuit Continuous Duration (Note 3) H Package T max 150˚C ...

Page 3

AC Electrical Characteristics Symbol Parameter Amplifier to Amplifier Coupling SR Slew Rate GBW Gain-Bandwidth Product e Equivalent Input Noise n Voltage i Equivalent Input Noise n Current Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device ...

Page 4

Typical Performance Characteristics Input Bias Current Supply Current Negative Common-Mode Input Voltage Limit www.national.com 00915517 Positive Common-Mode 00915519 Positive Current Limit 00915521 4 Input Bias Current 00915518 Input Voltage Limit 00915520 00915522 ...

Page 5

Typical Performance Characteristics Negative Current Limit Output Voltage Swing Bode Plot (Continued) Output Voltage Swing 00915523 00915525 00915527 5 00915524 Gain Bandwidth 00915526 Slew Rate 00915528 www.national.com ...

Page 6

Typical Performance Characteristics Distortion vs Frequency Open Loop Frequency Response Power Supply Rejection Ratio www.national.com (Continued) Undistorted Output Voltage 00915529 Common-Mode Rejection 00915531 Equivalent Input Noise 00915533 6 Swing 00915530 Ratio 00915532 Voltage 00915534 ...

Page 7

Typical Performance Characteristics Open Loop Voltage Gain Inverter Settling Time (Continued) 00915535 00915537 7 Output Impedance 00915536 www.national.com ...

Page 8

Pulse Response kΩ Small Signal Inverting Small Signal Non-Inverting www.national.com = 00915507 Large Signal Non-Inverting 00915508 8 Large Signal Inverting 00915509 00915510 ...

Page 9

Application Hints This device is a dual low power op amp with internally trimmed input offset voltages and JFET input devices (BI- FET II). These JFETs have large reverse breakdown volt- ages from gate to source and drain eliminating the ...

Page 10

Typical Applications Trim 1M pot for 1 kHz full-scale output 15 mW power drain No integrator reset FET required Mount D1 and D2 in close proximity 1% linearity to 1 kHz • 75˚C control • A1’s output represents ...

Page 11

Typical Applications (Continued Tel Labs type Q81 T Trim 5k for 10 µA through the 5k–120k combination *1% film resistor Q1, Q2, Q3 are included on LM389 amplifier chip which is temperature-stabilized by the LM389 and Q2-Q3, which ...

Page 12

Detailed Schematic www.national.com 1/2 Dual 00915516 12 ...

Page 13

Physical Dimensions inches (millimeters) unless otherwise noted TO-5 Metal Can Package (H) Order Number LF442AMH or LF442MH/883 NS Package Number H08A 13 www.national.com ...

Page 14

... National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. inches (millimeters) unless otherwise noted (Continued) Molded Dual-In-Line Package (N) Order Number LF442ACN or LF442CN NS Package Number N08E 2. A critical component is any component of a life ...

Related keywords