16 Phase Locked Loops (PLL) & Frequency Synthesis Circuits 2,400+

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Part	Manufacturer	Other IC type	Temperature Grade	No. of Terminals	Package Code	Package Shape	Surface Mount	Package Body Material	Maximum Supply Current (Isup)	No. of Functions	Technology	Screening Level	Terminal Form	Nominal Supply Voltage (Vsup)	Power Supplies (V)	Package Style (Meter)	Package Equivalence Code	Sub-Category	Terminal Pitch	Maximum Operating Temperature	Minimum Operating Temperature	Terminal Finish	Terminal Position	JESD-30 Code	Moisture Sensitivity Level (MSL)	Maximum Supply Voltage (Vsup)	Maximum Seated Height	Width (mm)	Qualification	Minimum Supply Voltage (Vsup)	Additional Features	JESD-609 Code	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Length
MB15E03SLWQN	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	HVQCCN	SQUARE	YES	PLASTIC/EPOXY		1	BICMOS		NO LEAD	3 V	2.5/3.3	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	LCC16,.16SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N16		3.6 V	.8 mm	4 mm	Not Qualified	2.4 V	DUAL MODULUS PRESCALER: 64/65 OR 128/129; 7-BIT SWALLOW COUNTER: 0 TO 127				4 mm
MB15E03LPV	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	VBCC	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS		BUTT	3 V		CHIP CARRIER, VERY THIN PROFILE				85 Cel	-40 Cel		BOTTOM	R-PBCC-B16		3.6 V	.8 mm	3.4 mm	Not Qualified	2.7 V	ALSO REQUIRES 2.7V TO 6V SUPPLY		NOT SPECIFIED	NOT SPECIFIED	4.55 mm
MB15E07SLWQN	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	QCCN	SQUARE	YES	PLASTIC/EPOXY			BICMOS		NO LEAD		2.5/3.3	CHIP CARRIER	LCC16,.16SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N16					Not Qualified
MB15C02PFV1	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	COMMERCIAL	16	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	2.2 mA	1	CMOS		GULL WING		1/1.5	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	TSSOP16,.25	PLL or Frequency Synthesis Circuits	.65 mm	60 Cel	-20 Cel		DUAL	R-PDSO-G16		1.5 V	1.45 mm	4.4 mm	Not Qualified	1 V			NOT SPECIFIED	NOT SPECIFIED	5 mm
MB15F07SLPV1	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	VBCC	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS		BUTT	3 V		CHIP CARRIER, VERY THIN PROFILE				85 Cel	-40 Cel		BOTTOM	R-PBCC-B16		3.6 V	.8 mm	4.2 mm	Not Qualified	2.4 V	BINARY 7-BIT SWALLOW COUNTER; 0 TO 127; DUAL MODULUS PRESCALER: 64/65, 128/129		NOT SPECIFIED	NOT SPECIFIED	4.55 mm
MB15E06PV1	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	VBCC	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS		BUTT	3 V		CHIP CARRIER, VERY THIN PROFILE				85 Cel	-40 Cel		BOTTOM	R-PBCC-B16		3.6 V	.8 mm	3.4 mm	Not Qualified	2.7 V			NOT SPECIFIED	NOT SPECIFIED	4.55 mm
IMI145158016SK	Infineon Technologies		MILITARY	16	DIP	RECTANGULAR	NO	CERAMIC			CMOS	38535Q/M;38534H;883B	THROUGH-HOLE	5 V	5	IN-LINE	DIP16,.3	PLL or Frequency Synthesis Circuits	2.54 mm	125 Cel	-55 Cel	Tin/Lead (Sn/Pb)	DUAL	R-XDIP-T16					Not Qualified			e0
MB15E03PFV1	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS		GULL WING	3 V		SMALL OUTLINE, LOW PROFILE, SHRINK PITCH			.65 mm	85 Cel	-40 Cel		DUAL	R-PDSO-G16		3.6 V	1.45 mm	4.4 mm	Not Qualified	2.7 V	ALSO REQUIRES 2.7V TO 6V SUPPLY		NOT SPECIFIED	NOT SPECIFIED	5 mm
WB1337XG	Infineon Technologies		INDUSTRIAL	16	SOP	RECTANGULAR	YES	PLASTIC/EPOXY			BICMOS		GULL WING		3/5	SMALL OUTLINE	SOP16,.25	PLL or Frequency Synthesis Circuits	1.27 mm	85 Cel	-40 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G16					Not Qualified			e0
MB15E05SLPV1	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	VBCC	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS		BUTT	3 V		CHIP CARRIER, VERY THIN PROFILE				85 Cel	-40 Cel		BOTTOM	R-PBCC-B16		3.6 V	.8 mm	3.4 mm	Not Qualified	2.4 V			NOT SPECIFIED	NOT SPECIFIED	4.55 mm
MB15E07LPV	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	VBCC	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS		BUTT	3 V		CHIP CARRIER, VERY THIN PROFILE				85 Cel	-40 Cel		BOTTOM	R-PBCC-B16		3.6 V	.8 mm	3.4 mm	Not Qualified	2.7 V	ALSO REQUIRES 0V TO 6V SUPPLY		NOT SPECIFIED	NOT SPECIFIED	4.55 mm
MB15E07PFV1	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS		GULL WING	3 V		SMALL OUTLINE, LOW PROFILE, SHRINK PITCH			.65 mm	85 Cel	-40 Cel		DUAL	R-PDSO-G16		3.6 V	1.45 mm	4.4 mm	Not Qualified	2.7 V			NOT SPECIFIED	NOT SPECIFIED	5 mm
MB15E07SRPFT	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	TSSOP	RECTANGULAR	YES	PLASTIC/EPOXY					GULL WING		2.7/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP16,.25	PLL or Frequency Synthesis Circuits	.635 mm	85 Cel	-40 Cel		DUAL	R-PDSO-G16					Not Qualified
IMI145158016PB	Infineon Technologies		INDUSTRIAL	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY			CMOS		THROUGH-HOLE	5 V	5	IN-LINE	DIP16,.3	PLL or Frequency Synthesis Circuits	2.54 mm	85 Cel	-40 Cel	TIN LEAD	DUAL	R-PDIP-T16					Not Qualified			e0
IMI145158016ST	Infineon Technologies		MILITARY	16	DIP	RECTANGULAR	NO	CERAMIC			CMOS		THROUGH-HOLE	5 V	5	IN-LINE	DIP16,.3	PLL or Frequency Synthesis Circuits	2.54 mm	125 Cel	-55 Cel	TIN LEAD	DUAL	R-XDIP-T16					Not Qualified			e0
MB15E07SRPV1	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	VBCC	RECTANGULAR	YES	PLASTIC/EPOXY		1			BUTT	3.75 V		CHIP CARRIER, VERY THIN PROFILE			.8 mm	85 Cel	-40 Cel		BOTTOM	R-PBCC-B16		5 V	.8 mm	3.4 mm	Not Qualified	2.7 V			NOT SPECIFIED	NOT SPECIFIED	4.55 mm
MB15E05SLPV	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	VBCC	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS		BUTT	3 V		CHIP CARRIER, VERY THIN PROFILE				85 Cel	-40 Cel		BOTTOM	R-PBCC-B16		3.6 V	.8 mm	3.4 mm	Not Qualified	2.4 V			NOT SPECIFIED	NOT SPECIFIED	4.55 mm
MB15E06SRPFT	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	TSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	11.5 mA				GULL WING	3 V	3	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP16,.25	PLL or Frequency Synthesis Circuits	.635 mm	85 Cel	-40 Cel		DUAL	R-PDSO-G16					Not Qualified
MB15E07SLPV	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	VBCC	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS		BUTT	3 V		CHIP CARRIER, VERY THIN PROFILE				85 Cel	-40 Cel		BOTTOM	R-PBCC-B16		3.6 V	.8 mm	3.4 mm	Not Qualified	2.4 V	ALSO REQUIRES 2.4V TO 5.5V SUPPLY		NOT SPECIFIED	NOT SPECIFIED	4.55 mm
MB15E06SRPV1	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	VBCC	RECTANGULAR	YES	PLASTIC/EPOXY		1			BUTT	3 V		CHIP CARRIER, VERY THIN PROFILE			.8 mm	85 Cel	-40 Cel		BOTTOM	R-PBCC-B16		4 V	.8 mm	3.4 mm	Not Qualified	2.7 V			NOT SPECIFIED	NOT SPECIFIED	4.55 mm
MB15E07SLPV1	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	VBCC	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS		BUTT	3 V		CHIP CARRIER, VERY THIN PROFILE				85 Cel	-40 Cel		BOTTOM	R-PBCC-B16		3.6 V	.8 mm	3.4 mm	Not Qualified	2.4 V			NOT SPECIFIED	NOT SPECIFIED	4.55 mm
MB15E07LPFV1	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS		GULL WING	3 V		SMALL OUTLINE, LOW PROFILE, SHRINK PITCH			.65 mm	85 Cel	-40 Cel		DUAL	R-PDSO-G16		3.6 V	1.45 mm	4.4 mm	Not Qualified	2.7 V	ALSO REQUIRES 0V TO 6V SUPPLY		NOT SPECIFIED	NOT SPECIFIED	5 mm
MB15E06SRPV	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	VBCC	RECTANGULAR	YES	PLASTIC/EPOXY		1			BUTT	3 V		CHIP CARRIER, VERY THIN PROFILE			.8 mm	85 Cel	-40 Cel		BOTTOM	R-PBCC-B16		4 V	.8 mm	3.4 mm	Not Qualified	2.7 V			NOT SPECIFIED	NOT SPECIFIED	4.55 mm
SDA3412X6	Infineon Technologies		COMMERCIAL EXTENDED	16	SOP	RECTANGULAR	YES	PLASTIC/EPOXY			BIPOLAR		GULL WING	5 V	5	SMALL OUTLINE	SOP16,.25	PLL or Frequency Synthesis Circuits	1.27 mm	80 Cel	-20 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G16					Not Qualified			e0
SDA3302X6	Infineon Technologies		COMMERCIAL EXTENDED	16	SOP	RECTANGULAR	YES	PLASTIC/EPOXY			BIPOLAR		GULL WING	5 V	5	SMALL OUTLINE	SOP16,.25	PLL or Frequency Synthesis Circuits	1.27 mm	80 Cel	-20 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G16					Not Qualified			e0
SDA6102X	Infineon Technologies		COMMERCIAL EXTENDED	16	SOP	RECTANGULAR	YES	PLASTIC/EPOXY			BIPOLAR		GULL WING	5 V	5	SMALL OUTLINE	SOP16,.25	PLL or Frequency Synthesis Circuits	1.27 mm	80 Cel	-20 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G16					Not Qualified			e0
SDA6102-5X	Infineon Technologies		COMMERCIAL EXTENDED	16	SOP	RECTANGULAR	YES	PLASTIC/EPOXY			BIPOLAR		GULL WING	5 V	5	SMALL OUTLINE	SOP16,.25	PLL or Frequency Synthesis Circuits	1.27 mm	80 Cel	-20 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G16					Not Qualified			e0
933809570118	Nexperia	PLL FREQUENCY SYNTHESIZER	AUTOMOTIVE	16	SOP	RECTANGULAR	YES	PLASTIC/EPOXY	.008 mA	1	CMOS		GULL WING	5 V		SMALL OUTLINE	SOP16,.25		1.27 mm	125 Cel	-40 Cel	NICKEL PALLADIUM GOLD	DUAL	R-PDSO-G16	1	5.5 V	1.75 mm	3.9 mm		4.5 V		e4	30	260	9.9 mm
PT7V4050TATHA30.720/16.665	Diodes Incorporated	PHASE DETECTOR	INDUSTRIAL	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY		1			THROUGH-HOLE	5 V		IN-LINE			2.54 mm	85 Cel	-40 Cel		DUAL	R-PDIP-T16		5.5 V	4.58 mm	7.62 mm		4.5 V	SEATED HEIGHT CALCULATED				20.32 mm
PT7V4050GATCA22.1184/19.440	Diodes Incorporated	PHASE DETECTOR	INDUSTRIAL	16	SON	RECTANGULAR	YES	PLASTIC/EPOXY		1			NO LEAD	5 V		SMALL OUTLINE			2.54 mm	85 Cel	-40 Cel		DUAL	R-PDSO-N16		5.5 V	4.15 mm	10.16 mm		4.5 V					20.32 mm
PT7V4050GACGA20.000/20.6208	Diodes Incorporated	PHASE DETECTOR	COMMERCIAL	16	SON	RECTANGULAR	YES	PLASTIC/EPOXY		1			NO LEAD	5 V		SMALL OUTLINE			2.54 mm	70 Cel	0 Cel		DUAL	R-PDSO-N16		5.5 V	4.15 mm	10.16 mm		4.5 V					20.32 mm
PT7V4050TATCA24.704/16.000	Diodes Incorporated	PHASE DETECTOR	INDUSTRIAL	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY		1			THROUGH-HOLE	5 V		IN-LINE			2.54 mm	85 Cel	-40 Cel		DUAL	R-PDIP-T16		5.5 V	4.58 mm	7.62 mm		4.5 V	SEATED HEIGHT CALCULATED				20.32 mm
PT7V4050TACGA19.440/20.9715	Diodes Incorporated	PHASE DETECTOR	COMMERCIAL	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY		1			THROUGH-HOLE	5 V		IN-LINE			2.54 mm	70 Cel	0 Cel		DUAL	R-PDIP-T16		5.5 V	4.58 mm	7.62 mm		4.5 V	SEATED HEIGHT CALCULATED				20.32 mm
PT7V4050TATGA38.880/15.360	Diodes Incorporated	PHASE DETECTOR	INDUSTRIAL	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY		1			THROUGH-HOLE	5 V		IN-LINE			2.54 mm	85 Cel	-40 Cel		DUAL	R-PDIP-T16		5.5 V	4.58 mm	7.62 mm		4.5 V	SEATED HEIGHT CALCULATED				20.32 mm
PT7V4050TATCA24.576/20.000	Diodes Incorporated	PHASE DETECTOR	INDUSTRIAL	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY		1			THROUGH-HOLE	5 V		IN-LINE			2.54 mm	85 Cel	-40 Cel		DUAL	R-PDIP-T16		5.5 V	4.58 mm	7.62 mm		4.5 V	SEATED HEIGHT CALCULATED				20.32 mm
PT7V4050TACFA33.330/17.664	Diodes Incorporated	PHASE DETECTOR	COMMERCIAL	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY		1			THROUGH-HOLE	5 V		IN-LINE			2.54 mm	70 Cel	0 Cel		DUAL	R-PDIP-T16		5.5 V	4.58 mm	7.62 mm		4.5 V	SEATED HEIGHT CALCULATED				20.32 mm
PT7V4050TATFA33.330/12.288	Diodes Incorporated	PHASE DETECTOR	INDUSTRIAL	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY		1			THROUGH-HOLE	5 V		IN-LINE			2.54 mm	85 Cel	-40 Cel		DUAL	R-PDIP-T16		5.5 V	4.58 mm	7.62 mm		4.5 V	SEATED HEIGHT CALCULATED				20.32 mm
PT7V4050GATCA34.368/23.7285	Diodes Incorporated	PHASE DETECTOR	INDUSTRIAL	16	SON	RECTANGULAR	YES	PLASTIC/EPOXY		1			NO LEAD	5 V		SMALL OUTLINE			2.54 mm	85 Cel	-40 Cel		DUAL	R-PDSO-N16		5.5 V	4.15 mm	10.16 mm		4.5 V					20.32 mm
PT7V4050TATHA17.920/15.360	Diodes Incorporated	PHASE DETECTOR	INDUSTRIAL	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY		1			THROUGH-HOLE	5 V		IN-LINE			2.54 mm	85 Cel	-40 Cel		DUAL	R-PDIP-T16		5.5 V	4.58 mm	7.62 mm		4.5 V	SEATED HEIGHT CALCULATED				20.32 mm
PT7V4050TACHA16.000/12.288	Diodes Incorporated	PHASE DETECTOR	COMMERCIAL	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY		1			THROUGH-HOLE	5 V		IN-LINE			2.54 mm	70 Cel	0 Cel		DUAL	R-PDIP-T16		5.5 V	4.58 mm	7.62 mm		4.5 V	SEATED HEIGHT CALCULATED				20.32 mm
PT7V4050GATFA16.777/17.664	Diodes Incorporated	PHASE DETECTOR	INDUSTRIAL	16	SON	RECTANGULAR	YES	PLASTIC/EPOXY		1			NO LEAD	5 V		SMALL OUTLINE			2.54 mm	85 Cel	-40 Cel		DUAL	R-PDSO-N16		5.5 V	4.15 mm	10.16 mm		4.5 V					20.32 mm
PT7V4050GATHA22.1184/20.9715	Diodes Incorporated	PHASE DETECTOR	INDUSTRIAL	16	SON	RECTANGULAR	YES	PLASTIC/EPOXY		1			NO LEAD	5 V		SMALL OUTLINE			2.54 mm	85 Cel	-40 Cel		DUAL	R-PDSO-N16		5.5 V	4.15 mm	10.16 mm		4.5 V					20.32 mm
PT7V4050TACCA49.152/23.7285	Diodes Incorporated	PHASE DETECTOR	COMMERCIAL	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY		1			THROUGH-HOLE	5 V		IN-LINE			2.54 mm	70 Cel	0 Cel		DUAL	R-PDIP-T16		5.5 V	4.58 mm	7.62 mm		4.5 V	SEATED HEIGHT CALCULATED				20.32 mm
PT7V4050GATGA27.000/20.000	Diodes Incorporated	PHASE DETECTOR	INDUSTRIAL	16	SON	RECTANGULAR	YES	PLASTIC/EPOXY		1			NO LEAD	5 V		SMALL OUTLINE			2.54 mm	85 Cel	-40 Cel		DUAL	R-PDSO-N16		5.5 V	4.15 mm	10.16 mm		4.5 V					20.32 mm
PT7V4050TACGA24.704/16.665	Diodes Incorporated	PHASE DETECTOR	COMMERCIAL	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY		1			THROUGH-HOLE	5 V		IN-LINE			2.54 mm	70 Cel	0 Cel		DUAL	R-PDIP-T16		5.5 V	4.58 mm	7.62 mm		4.5 V	SEATED HEIGHT CALCULATED				20.32 mm
PT7V4050TATGA24.576/17.184	Diodes Incorporated	PHASE DETECTOR	INDUSTRIAL	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY		1			THROUGH-HOLE	5 V		IN-LINE			2.54 mm	85 Cel	-40 Cel		DUAL	R-PDIP-T16		5.5 V	4.58 mm	7.62 mm		4.5 V	SEATED HEIGHT CALCULATED				20.32 mm
PT7V4050GACCA16.128/20.9715	Diodes Incorporated	PHASE DETECTOR	COMMERCIAL	16	SON	RECTANGULAR	YES	PLASTIC/EPOXY		1			NO LEAD	5 V		SMALL OUTLINE			2.54 mm	70 Cel	0 Cel		DUAL	R-PDSO-N16		5.5 V	4.15 mm	10.16 mm		4.5 V					20.32 mm
PT7V4050GBCHA12.288/12.288	Diodes Incorporated	PHASE DETECTOR	COMMERCIAL	16	SON	RECTANGULAR	YES	PLASTIC/EPOXY		1			NO LEAD	5 V		SMALL OUTLINE			2.54 mm	70 Cel	0 Cel		DUAL	R-PDSO-N16		5.5 V	4.15 mm	10.16 mm		4.5 V					20.32 mm

Phase Locked Loops (PLL) & Frequency Synthesis Circuits

Phase Locked Loops (PLL) and Frequency Synthesis Circuits are electronic circuits used to generate and control stable and precise frequencies for use in various applications, such as communication systems, signal processing, and instrumentation.

A PLL is a feedback system that compares the phase of an input signal to the phase of a reference signal and adjusts the output frequency to match the reference frequency. The basic components of a PLL include a phase detector, a low-pass filter, a voltage-controlled oscillator (VCO), and a frequency divider. The phase detector compares the phase of the input and reference signals and generates an error signal that is filtered and used to adjust the frequency of the VCO. The output of the VCO is divided by a frequency divider to generate the output frequency. PLLs are commonly used for frequency synthesis, clock recovery, and phase modulation/demodulation.

Frequency synthesis circuits are electronic circuits used to generate precise and stable frequencies by combining multiple signals with different frequencies. These circuits use various techniques, such as direct digital synthesis (DDS), fractional-N synthesis, and frequency mixing to generate frequencies. DDS is a technique that uses a digital signal generator to generate a waveform with a specific frequency, phase, and amplitude. Fractional-N synthesis is a technique that uses a PLL to generate a frequency that is a fraction of the reference frequency. Frequency mixing is a technique that combines two signals with different frequencies to generate a signal with a frequency equal to the difference between the two frequencies.

PLLs and frequency synthesis circuits are critical components in many electronic systems that require precise and stable frequencies. These circuits are used in communication systems, signal processing, instrumentation, and other applications where accurate frequency generation and control is required.