Features 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: Low input noise current: High input impedance: 1012 High gain VO = ±10V, RL = 10k: 50k (min) 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 k 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 applications. The LF442 should be used where low power dissipation and good electrical characteristics are the major considerations.

Also Recommended LM8272▲ Wider Bandwidth,lower Power Consumption,RRIO, Unlimited Cap Drive,smaller Package

Typical Application click for larger image	Connection Diagram *click for larger image
Typical Performance click for larger image

Datasheets

Title		Size	Date	Other Language
	LF442 Dual Low Power JFET Input Operational Amplifier	501 Kbytes	13-Sep-04	日本語

Application Notes

Title		Size	Date	Other Language
	AN-447: Application Note 447	76 Kbytes	4-Nov-95
	AN-1485: Application Note 1485 The Effect of Heavy Loads on the Accuracy and Linearity of Operational Amplifier Circuits	752 Kbytes	15-Sep-08

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LF442ACN/NOPB LF442ACN RoHS Status	MDIP	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 80 AVNET-EM Worldwide 64 DIGI-KEY Worldwide 461 FARNELL Europe and Asia 16 MOUSER Worldwide 69 NEWARK Americas 129 TAYLOR Americas 80	$2.19 each at 1K+ pcs	rail of 40
LF442CN/NOPB LF442CN RoHS Status	MDIP	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 726 AVNET-EM Worldwide 5543 BRITESTONE South Korea 219 DIGI-KEY Worldwide 577 FARNELL Europe and Asia 1052 MOUSER Worldwide 931 NEWARK Americas 945 RS COMPONENTS Worldwide 230 RSL MICRO Asia Pacific 29000 TAYLOR Americas 2086	$0.49 each at 1K+ pcs	rail of 40
LF442AMH/NOPB LF442AMH RoHS Status	TO-99	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 331 AVNET-EM Worldwide 1 DIGI-KEY Worldwide 575 TAYLOR Americas 331	$14.00 each at 1K+ pcs	box of 500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LF442.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LF442 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LF442ACN/NOPB LF442ACN	508.252 510.002	MDIP	8	1 1	NA NA	Detail	Download	spice file	NSUZXYTTE# LF 442ACN
LF442CN/NOPB LF442CN	508.252 510.002	MDIP	8	1 1	NA NA	Detail	Download	spice file	NSUZXYTTE# LF 442CN
LF442AMH/NOPB LF442AMH	969.917 971.007	TO-99	8	1 1	NA NA	Detail	Download	spice file	NSZXYTTE# LF442AMH

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LF442.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LF442 is located at RoHS Status.

Design Tools

Title	Size	Date
Amplifiers Selection Guide software for Windows

CAD Symbols and Models Download LF442 CAD Symbols

Models spice file

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LF442ACN	BIFET	0	12875	0	0	1065000	4	302196657
LF442CN	BIFET	0	12875	0	0	1065000	4	302196657

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LF442.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LF442 is located at RoHS Status.