Features Demodulates ±15% deviation FM/FSK signals Carrier Detect Output with hysteresis Operation to 500 kHz input frequency Low THD-0.5% typ. for ±10% deviation 2V to 9V supply voltage range Low supply current drain Description The LMC568 is an amplitude-linear phase-locked loop consisting of a linear VCO, fully balanced phase detectors, and a carrier detect output. LMCMOS™ technology is employed for high performance with low power consumption. The VCO has a linearized control range of ±30% to allow demodulation of FM and FSK signals. Carrier detect is indicated when the PLL is locked to an input signal greater than 26 mVrms. LMC568 applications include FM SCA and TV second audio program decoders, FSK data demodulators, and voice pagers.

Typical Application click for larger image

Datasheets

Title		Size	Date	Other Language
	LMC568 Low Power Phase-Locked Loop	183 Kbytes	14-Oct-04

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LMC568CM/NOPB LMC568CM RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0 MOUSER Worldwide 204	$0.69 each at 1K+ pcs	rail of 95
LMC568CMX/NOPB LMC568CMX RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$0.69 each at 1K+ pcs	reel of 2500

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LMC568CN	NONE	NONE	01 Dec 2004

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 LMC568.

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 LMC568 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
LMC568CM/NOPB LMC568CM	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	N/A	N/A	NSZXTT LMC 568CM
LMC568CMX/NOPB LMC568CMX	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	N/A	N/A	NSZXTT LMC 568CM

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 LMC568.

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 LMC568 is located at RoHS Status.

CAD Symbols and Models N/A

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LMC568CM	CMOS	0	20300	0	0	2785000	2	790251354
LMC568CMX	CMOS	0	20300	0	0	2785000	2	790251354

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 LMC568.

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 LMC568 is located at RoHS Status.

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LMC568CN	NONE	NONE	01 Dec 2004