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

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Datasheet

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

Featured Application Notes

Title		Size	Date	Other Language
	AN-856: Application Note 856 A SPICE Compatible Macromodel for CMOS Operational Amplifiers	121 Kbytes	1-Oct-02

More Application Notes

Title		Size	Date	Other Language
	AN-856: Application Note 856 A SPICE Compatible Macromodel for CMOS Operational Amplifiers	121 Kbytes	1-Oct-02

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Standard Pack Size
LPC661IM/NOPB LPC661IM RoHS	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 268 AVNET-EM Worldwide 25 DIGIKEY Worldwide 1555 FARNELL Europe and Asia 1098 FUTURE Worldwide 615 NEWARK Americas 319	$0.78 each at 1K+ pcs	rail of 95
LPC661IMX/NOPB LPC661IMX RoHS	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty DIGIKEY 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

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)
LPC661IM	P2CMOS	0	49735	0	1	4330000	2	556689228
LPC661IMX	P2CMOS	0	49735	0	1	4330000	2	556689228

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.

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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