Features (Typical unless otherwise noted) Rail-to-rail output swing Low supply current 55 µA Specified for 100 kOhm and 5 kOhm loads High voltage gain 120 dB Low input offset voltage 3 mV Low offset voltage drift 1.3 µV/°C Ultra low input bias current 2 fA Input common-mode range includes GND Operating range from +5V to +15V Low distortion 0.01% at 1 kHz Slew rate 0.11 V/µs Description The LPC661 CMOS operational amplifier is ideal for operation from a single supply. It features a wide range of operating supply voltage from +5V to +15V, rail-to-rail output swing and an input common-mode range that includes ground. Performance limitations that have plagued CMOS amplifiers in the past are not a problem with this design. Input VOS, drift, and broadband noise as well as voltage gain (into 100 kOhm and 5 kOhm) are all equal to or better than widely accepted bipolar equivalents, while the supply current requirement is typically 55 µA. This chip is built with National's advanced Double-Poly Silicon-Gate CMOS process. See the LPC660 datasheet for a Quad CMOS operational amplifier or the LPC662 data sheet for a Dual CMOS operational amplifier with these same features. Applications High-impedance buffer Precision current-to-voltage converter Long-term integrator High-impedance preamplifier Active filter Sample-and-Hold circuit Peak detector

Datasheets

Title		Size	Date	Other Language
	LPC661 Low Power CMOS Operational Amplifier	319 Kbytes	29-Aug-00	日本語

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LPC661IM/NOPB LPC661IM RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 805 AVNET-EM Worldwide 134 DIGI-KEY Worldwide 564 FARNELL Europe and Asia 604 MOUSER Worldwide 305 NEWARK Americas 96 TAYLOR Americas 805	$0.78 each at 1K+ pcs	rail of 95
LPC661IMX/NOPB LPC661IMX RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$0.78 each at 1K+ pcs	reel of 2500

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LPC661AIM	NONE	NONE	08 Sep 1998
LPC661AIMX	NONE	NONE	08 Sep 1998
LPC661AIN	NONE	NONE	08 Sep 1998
LPC661AMN	NONE	NONE	10 Mar 1998
LPC661IN	NONE	NONE	08 Sep 1998

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 LPC661.

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 LPC661 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
LPC661IM/NOPB LPC661IM	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	Download	spice file	NSZXTT LPC66 1IM
LPC661IMX/NOPB LPC661IMX	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	Download	spice file	NSZXTT LPC66 1IM

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 LPC661.

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 LPC661 is located at RoHS Status.

Design Tools

Title	Size	Date
Amplifiers Selection Guide software for Windows

CAD Symbols and Models Download LPC661 CAD Symbols

Models spice file

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LPC661IM	P2CMOS	0	50860	0	1	4503500	2	578995367
LPC661IMX	P2CMOS	0	50860	0	1	4503500	2	578995367

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 LPC661.

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 LPC661 is located at RoHS Status.

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LPC661AIM	NONE	NONE	08 Sep 1998
LPC661AIMX	NONE	NONE	08 Sep 1998
LPC661AIN	NONE	NONE	08 Sep 1998
LPC661AMN	NONE	NONE	10 Mar 1998
LPC661IN	NONE	NONE	08 Sep 1998