Features OP AMPREFERENCE • Low operating current: 300 µA (op amp) • Wide supply voltage range: 4V to 36V • Wide common-mode range: V- to (V+-1.8V) • Wide differential input voltage: ±36V • Available in low cost 8-pin DIP • Available in plastic package rated for Military Temperature Range Operation • Adjustable output voltage: 1.2V to 6.3V • Tight initial tolerance available: ±0.6% • Wide operating current range: 17 µA to 20 mA • Reference floats above ground • Tolerant of load capacitance Description The LM611 consists of a single-supply op-amp and a programmable voltage reference in one space saving 8-pin package. The op-amp out-performs most single-supply op-amps by providing higher speed and bandwidth along with low supply current. This device was specifically designed to lower cost and board space requirements in transducer, test, measurement and data acquisition systems. Combining a stable voltage reference with a wide output swing op-amp makes the LM611 ideal for single supply transducers, signal conditioning and bridge driving where large common-mode signals are common. The voltage reference consists of a reliable band-gap design that maintains low dynamic output impedance (1 typical), excellent initial tolerance (0.6%), and the ability to be programmed from 1.2V to 6.3V via two external resistors. The voltage reference is very stable even when driving large capacitive loads, as are commonly encountered in CMOS data acquisition systems. As a member of National's Super-Block™ family, the LM611 is a space-saving monolithic alternative to a multi-chip solution, offering a high level of integration without sacrificing performance. Applications • Transducer bridge driver • Process and Mass Flow Control systems • Power supply voltage monitor • Buffered voltage references for A/D's

MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

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

Datasheet

Title		Size	Date	Other Language
	LM611 Operational Amplifier and Adjustable Reference	812 Kbytes	24-Sep-04
	LM611 Mil-Aero Datasheet MNLM611AM-X	21 Kbytes

Featured Application Notes

Title		Size	Date	Other Language
	AN-1984: Application Note 1984 LM57 Temperature Switch vs Thermistors	210 Kbytes	28-Jul-09

More Application Notes

Title		Size	Date	Other Language
	AN-662: COP800 Based Automated Security/Monitoring System	137 Kbytes	5-Aug-95

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Standard Pack Size
LM611CM/NOPB RoHS	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 15 AVNET-EM Worldwide 195 DIGIKEY Worldwide 1527	$0.84 each at 1K+ pcs	rail of 55
LM611IM/NOPB RoHS	SOIC NARROW	Full production Lead Time: 12 weeks	Distributor Region Qty DIGIKEY Worldwide 4527 NEWARK Americas 33	$0.95 each at 1K+ pcs	rail of 55
LM611CMX/NOPB RoHS	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty DIGIKEY Worldwide 0	$0.84 each at 1K+ pcs	reel of 2500
LM611IMX/NOPB LM611IMX RoHS	SOIC NARROW	Full production Lead Time: 16 weeks	Distributor Region Qty DIGIKEY Worldwide 0	$0.95 each at 1K+ pcs	reel of 2500

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM611AIN	NONE	NONE	10 Mar 1998
LM611AMJ/883	NONE	NONE	05 Mar 2008
LM611BIN	NONE	NONE	10 Mar 1998
LM611CN	NONE	NONE	10 Mar 1998
LM611MN	NONE	NONE	10 Mar 1998

Design Tools

Title	Size	Date
Amplifiers Selection Guide software for Windows

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM611CM	SLM	0	44046	0	0	3532500	1	1002356520
LM611CMX	SLM	0	44046	0	0	3532500	1	1002356520
LM611IM	SLM	0	44046	0	0	3532500	1	1002356520
LM611IMX	SLM	0	44046	0	0	3532500	1	1002356520

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.

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM611AIN	NONE	NONE	10 Mar 1998
LM611AMJ/883	NONE	NONE	05 Mar 2008
LM611BIN	NONE	NONE	10 Mar 1998
LM611CN	NONE	NONE	10 Mar 1998
LM611MN	NONE	NONE	10 Mar 1998