LF444CMX Datasheet, PDF (1/18 Pages) Texas Instruments – LF444 Quad Low Power JFET Input Operational Ampli

LF444
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SNOSC04D – MAY 1998 – REVISED MARCH 2013
LF444 Quad Low Power JFET Input Operational Amplifier
Check for Samples: LF444
FEATURES
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•23 ¼ Supply Current of a LM148: 200 μA/Amplifier
(max)
• Low Input Bias Current: 50 pA (max)
• High Gain Bandwidth: 1 MHz
• High Slew Rate: 1 V/μs
• Low Noise Voltage for Low Power 35 nV/√Hz
• Low Input Noise Current 0.01 pA/√Hz
• High Input Impedance: 10¹²Î©
• High Gain: 50k (min)
DESCRIPTION
The LF444 quad low power operational amplifier
provides many of the same AC characteristics as the
industry standard LM148 while greatly improving the
DC characteristics of the LM148. The amplifier has
the same bandwidth, slew rate, and gain (10 kΩ load)
as the LM148 and only draws one fourth the supply
current of the LM148. In addition the well matched
high voltage JFET input devices of the LF444 reduce
the input bias and offset currents by a factor of
10,000 over the LM148. The LF444 also has a very
low equivalent input noise voltage for a low power
amplifier.
The LF444 is pin compatible with the LM148 allowing
an immediate 4 times reduction in power drain in
many applications. The LF444 should be used
wherever low power dissipation and good electrical
characteristics are the major considerations.
Simplified Schematic
Connection Diagram
Figure 1. 1/4 Quad
Figure 2. PDIP/SOIC Package
Top View
See Package Number NAK0014D, D0014A or
NFF0014A
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
BI-FET is a trademark of Texas Instruments.
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All other trademarks are the property of their respective owners.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1998–2013, Texas Instruments Incorporated