Datasheet > LF442

LF442

更新时间： 2024-11-09 02:58:55

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描述
Dual Low Power JFET Input Operational Amplifier

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LF442 数据手册

LF442

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SNOSC03E –APRIL 1999–REVISED OCTOBER 2013

LF442 Dual Low Power JFET Input Operational Amplifier

Check for Samples: LF442

FEATURES

DESCRIPTION

The LF442 dual low power operational amplifiers

provide many of the same AC characteristics as the

industry standard 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 ensures

very low input offset voltage and voltage drift. The

LF442 also has a very low equivalent input noise

voltage for a low power amplifier.

•

1/10 Supply Current of a LM1458: 400 μA (max)

Low Input Bias Current: 50 pA (max)

Low Input Offset Voltage: 1 mV (max)

Low Input Offset Voltage Drift: 10 μV/°C (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: 10¹²Ω

High Gain V_O= ±10V, R_L= 10k: 50k (min)

The LF442 is pin compatible with the LM1458

allowing an immediate 10 times reduction in power

drain in many applications. The LF442 should be

used where low power dissipation and good electrical

characteristics are the major considerations.

Typical Connection

Connection Diagrams

Pin 4 connected to case

PDIP Package Top View

Package Number P0008E

TO Package Top View

Package Number LMC0008C

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.

All trademarks are the property of their respective owners.

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.

12 3 4 5 6 7...20

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