Toshiba Phase Locked Loops (PLL) & Frequency Synthesis Circuits 93

Reset All

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	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	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
TB31201FN(ER)	Toshiba	PLL FREQUENCY SYNTHESIZER	OTHER	16	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	11 mA	1		GULL WING	2.2 V		SMALL OUTLINE, LOW PROFILE, SHRINK PITCH			.65 mm	85 Cel	-30 Cel		DUAL	R-PDSO-G16	5.5 V	1.6 mm	4.4 mm	Not Qualified	1.9 V	5-BIT AUXILIARY INPUT COUNTER				5 mm
TD6359N	Toshiba	PLL FREQUENCY SYNTHESIZER	COMMERCIAL EXTENDED	20	SDIP	RECTANGULAR	NO	PLASTIC/EPOXY	80 mA	1	BIPOLAR	THROUGH-HOLE	5 V	5	IN-LINE, SHRINK PITCH	SDIP20,.3	PLL or Frequency Synthesis Circuits	1.778 mm	75 Cel	-20 Cel	TIN LEAD	DUAL	R-PDIP-T20	5.5 V	4.5 mm	7.62 mm	Not Qualified	4.5 V		e0			18.6 mm
TD7623FN	Toshiba	PLL FREQUENCY SYNTHESIZER	OTHER	16	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	42 mA	1	BIPOLAR	GULL WING	5 V	5,5/8	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SSOP16,.25	PLL or Frequency Synthesis Circuits	.65 mm	85 Cel	-20 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G16	5.5 V	1.6 mm	4.4 mm	Not Qualified	4.5 V	ADDITIONAL 9V ALSO REQUIRED	e0			5 mm
TD7603Z	Toshiba	PLL FREQUENCY SYNTHESIZER	COMMERCIAL EXTENDED	21	ZIP	RECTANGULAR	NO	PLASTIC/EPOXY	41 mA	1	BIPOLAR	THROUGH-HOLE	5 V	5	IN-LINE	ZIP21,.1,35	PLL or Frequency Synthesis Circuits	.89 mm	75 Cel	-20 Cel		ZIG-ZAG	R-PZIP-T21	5.5 V	8.03 mm	3.2 mm	Not Qualified	4.5 V	SELECTABLE 1/32 OR 1/33 PRESCALER		NOT SPECIFIED	NOT SPECIFIED	19.4 mm
TD6381Z	Toshiba	PLL FREQUENCY SYNTHESIZER	COMMERCIAL EXTENDED	21	SZIP	RECTANGULAR	NO	PLASTIC/EPOXY	66 mA	1	BIPOLAR	THROUGH-HOLE	5 V	5	IN-LINE, SHRINK PITCH	ZIP21,.1,35	PLL or Frequency Synthesis Circuits	.89 mm	75 Cel	-20 Cel	TIN LEAD	ZIG-ZAG	R-PZIP-T21	5.5 V	8.03 mm	3.2 mm	Not Qualified	4.5 V		e0			19.4 mm
TC9217F	Toshiba	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	20	SOP	RECTANGULAR	YES	PLASTIC/EPOXY	25 mA	1	CMOS	GULL WING	5 V	5	SMALL OUTLINE	SOP20,.3	PLL or Frequency Synthesis Circuits	1.27 mm	85 Cel	-40 Cel	TIN LEAD	DUAL	R-PDSO-G20	5.5 V	1.8 mm	5.3 mm	Not Qualified	4.5 V		e0			12.8 mm
TC7101F	Toshiba	PLL FREQUENCY SYNTHESIZER		8	SOP	RECTANGULAR	YES	PLASTIC/EPOXY		1		GULL WING			SMALL OUTLINE							DUAL	R-PDSO-G8	5.5 V			Not Qualified	1.8 V
TD6380Z	Toshiba	PLL FREQUENCY SYNTHESIZER	COMMERCIAL EXTENDED	21	SZIP	RECTANGULAR	NO	PLASTIC/EPOXY	66 mA	1	BIPOLAR	THROUGH-HOLE	5 V	5	IN-LINE, SHRINK PITCH	ZIP21,.1,35	PLL or Frequency Synthesis Circuits	.89 mm	75 Cel	-20 Cel	TIN LEAD	ZIG-ZAG	R-PZIP-T21	5.5 V	8.03 mm	3.2 mm	Not Qualified	4.5 V		e0			19.4 mm
TC9257AFG	Toshiba	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	20	SOP	RECTANGULAR	YES	PLASTIC/EPOXY	15 mA	1	CMOS	GULL WING	5 V	5	SMALL OUTLINE	SOP20,.3	PLL or Frequency Synthesis Circuits	1.27 mm	85 Cel	-40 Cel	TIN COPPER/TIN SILVER	DUAL	R-PDSO-G20	5.5 V	1.9 mm	5.3 mm	Not Qualified	4.5 V		e2			12.8 mm
TD6382P	Toshiba	PLL FREQUENCY SYNTHESIZER	COMMERCIAL EXTENDED	20	DIP	RECTANGULAR	NO	PLASTIC/EPOXY	66 mA	1	BIPOLAR	THROUGH-HOLE	5 V	5	IN-LINE	DIP20,.3	PLL or Frequency Synthesis Circuits	2.54 mm	75 Cel	-20 Cel	TIN LEAD	DUAL	R-PDIP-T20	5.5 V	4.45 mm	7.62 mm	Not Qualified	4.5 V		e0			24.6 mm
TB2118F	Toshiba	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	24	SSOP	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS	GULL WING	8.5 V	3.5,5,8.5	SMALL OUTLINE, SHRINK PITCH	SSOP24,.3	PLL or Frequency Synthesis Circuits	1 mm	85 Cel	-40 Cel		DUAL	R-PDSO-G24	10 V	2.2 mm	6 mm	Not Qualified	8 V	ALSO REQUIRES A 4.5V TO 5.5V & A 3V TO 5.5V SUPPLY		NOT SPECIFIED	NOT SPECIFIED	13 mm
TC9257P	Toshiba	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	20	DIP	RECTANGULAR	NO	PLASTIC/EPOXY	15 mA	1	CMOS	THROUGH-HOLE	5 V	5	IN-LINE	DIP20,.3	PLL or Frequency Synthesis Circuits	2.54 mm	85 Cel	-40 Cel	TIN LEAD	DUAL	R-PDIP-T20	5.5 V	4.45 mm	7.62 mm	Not Qualified	4.5 V		e0			24.6 mm
TD6350P	Toshiba	PLL FREQUENCY SYNTHESIZER	COMMERCIAL EXTENDED	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY	120 mA	1		THROUGH-HOLE	5 V		IN-LINE			2.54 mm	75 Cel	-20 Cel		DUAL	R-PDIP-T16	5.5 V	4.45 mm	7.62 mm	Not Qualified	4.5 V					19.25 mm
TD6381N	Toshiba	PLL FREQUENCY SYNTHESIZER	COMMERCIAL EXTENDED	20	SDIP	RECTANGULAR	NO	PLASTIC/EPOXY	66 mA	1	BIPOLAR	THROUGH-HOLE	5 V	5	IN-LINE, SHRINK PITCH	SDIP20,.3	PLL or Frequency Synthesis Circuits	1.778 mm	75 Cel	-20 Cel	TIN LEAD	DUAL	R-PDIP-T20	5.5 V	4.5 mm	7.62 mm	Not Qualified	4.5 V		e0			18.6 mm
TB2110FN	Toshiba	PLL FREQUENCY SYNTHESIZER	COMMERCIAL EXTENDED	24	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS	GULL WING	1.5 V	1.5,2.4	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SSOP24,.3	PLL or Frequency Synthesis Circuits	.65 mm	75 Cel	-20 Cel		DUAL	R-PDSO-G24	2.5 V	1.6 mm	5.6 mm	Not Qualified	1.2 V			NOT SPECIFIED	NOT SPECIFIED	7.8 mm
TC9223F	Toshiba	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	SOP	RECTANGULAR	YES	PLASTIC/EPOXY	20 mA	1	CMOS	GULL WING	5 V	5	SMALL OUTLINE	SOP16,.25	PLL or Frequency Synthesis Circuits	1.27 mm	85 Cel	-40 Cel	TIN LEAD	DUAL	R-PDSO-G16	5.5 V	1.9 mm	5.3 mm	Not Qualified	4.5 V		e0			10.3 mm
TC9256APG	Toshiba	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY	15 mA	1	CMOS	THROUGH-HOLE	5 V	5	IN-LINE	DIP16,.3	PLL or Frequency Synthesis Circuits	2.54 mm	85 Cel	-40 Cel	TIN SILVER	DUAL	R-PDIP-T16	5.5 V	4.45 mm	7.62 mm	Not Qualified	4.5 V		e2			19.25 mm
TD6128F	Toshiba	PLL FREQUENCY SYNTHESIZER		8	SOP	RECTANGULAR	YES	PLASTIC/EPOXY		1		GULL WING			SMALL OUTLINE			1.27 mm				DUAL	R-PDSO-G8		1.9 mm	4.4 mm	Not Qualified						5 mm
TD6352P	Toshiba	PLL FREQUENCY SYNTHESIZER	COMMERCIAL EXTENDED	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY	120 mA	1	BIPOLAR	THROUGH-HOLE	5 V		IN-LINE			2.54 mm	75 Cel	-20 Cel		DUAL	R-PDIP-T16	5.5 V	4.45 mm	7.62 mm	Not Qualified	4.5 V	5-BIT AUXILIARY INPUT COUNTER				19.25 mm
TD6383Z	Toshiba	PLL FREQUENCY SYNTHESIZER		21	SZIP	RECTANGULAR	NO	PLASTIC/EPOXY		1		THROUGH-HOLE	5 V		IN-LINE, SHRINK PITCH			.889 mm				ZIG-ZAG	R-PZIP-T21	5.5 V	8.03 mm	3.2 mm	Not Qualified	4.5 V					19.4 mm
TC9223FG	Toshiba		INDUSTRIAL	16	SOP	RECTANGULAR	YES	PLASTIC/EPOXY	20 mA		CMOS	GULL WING	5 V	5	SMALL OUTLINE	SOP16,.3	PLL or Frequency Synthesis Circuits	1.27 mm	85 Cel	-40 Cel		DUAL	R-PDSO-G16				Not Qualified
TD7624FN	Toshiba		OTHER	16	SSOP	RECTANGULAR	YES	PLASTIC/EPOXY	79 mA		BIPOLAR	GULL WING		5,9	SMALL OUTLINE, SHRINK PITCH	SSOP16,.25	PLL or Frequency Synthesis Circuits	.635 mm	85 Cel	-20 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G16				Not Qualified			e0
TB31201FN-TP1	Toshiba	PLL FREQUENCY SYNTHESIZER	OTHER	16	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	11 mA	1		GULL WING	2.2 V		SMALL OUTLINE, LOW PROFILE, SHRINK PITCH			.65 mm	85 Cel	-30 Cel		DUAL	R-PDSO-G16	5.5 V	1.6 mm	4.4 mm	Not Qualified	1.9 V	5-BIT AUXILIARY INPUT COUNTER				5 mm
TD7614F	Toshiba	PLL FREQUENCY SYNTHESIZER	COMMERCIAL EXTENDED	20	SOP	RECTANGULAR	YES	PLASTIC/EPOXY	65 mA	1	BIPOLAR	GULL WING	5 V	5,12,33	SMALL OUTLINE	SOP20,.3	PLL or Frequency Synthesis Circuits	1.27 mm	75 Cel	-20 Cel	TIN LEAD	DUAL	R-PDSO-G20	5.5 V	2.25 mm	5.3 mm	Not Qualified	4.5 V	SELECTABLE 1/32 OR 1/33 PRESCALER	e0			12.6 mm
TC9257F	Toshiba	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	20	SOP	RECTANGULAR	YES	PLASTIC/EPOXY	15 mA	1	CMOS	GULL WING	5 V	5	SMALL OUTLINE	SOP20,.3	PLL or Frequency Synthesis Circuits	1.27 mm	85 Cel	-40 Cel	TIN LEAD	DUAL	R-PDSO-G20	5.5 V	1.8 mm	5.3 mm	Not Qualified	4.5 V		e0			12.8 mm
TD6381P	Toshiba	PLL FREQUENCY SYNTHESIZER	COMMERCIAL EXTENDED	20	DIP	RECTANGULAR	NO	PLASTIC/EPOXY	66 mA	1	BIPOLAR	THROUGH-HOLE	5 V	5	IN-LINE	DIP20,.3	PLL or Frequency Synthesis Circuits	2.54 mm	75 Cel	-20 Cel	TIN LEAD	DUAL	R-PDIP-T20	5.5 V	4.45 mm	7.62 mm	Not Qualified	4.5 V		e0			24.6 mm
TD7603F	Toshiba	PLL FREQUENCY SYNTHESIZER	COMMERCIAL EXTENDED	20	SOP	RECTANGULAR	YES	PLASTIC/EPOXY	41 mA	1	BIPOLAR	GULL WING	5 V	5	SMALL OUTLINE	SOP20,.3	PLL or Frequency Synthesis Circuits	1.27 mm	75 Cel	-20 Cel	TIN LEAD	DUAL	R-PDSO-G20	5.5 V	1.8 mm	5.3 mm	Not Qualified	4.5 V	SELECTABLE 1/32 OR 1/33 PRESCALER	e0			12.8 mm
TB1232FN	Toshiba	PLL FREQUENCY SYNTHESIZER	OTHER	16	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS	GULL WING	5 V	5,12,33	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SSOP16,.25	PLL or Frequency Synthesis Circuits	.65 mm	85 Cel	-20 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G16	5.5 V	1.6 mm	4.4 mm	Not Qualified	4.5 V	ADDITIONAL 12V AND 33V ALSO REQUIRED	e0			5 mm
TB31202FN-TP1	Toshiba	PLL FREQUENCY SYNTHESIZER	OTHER	16	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	11 mA	1		GULL WING	2.2 V		SMALL OUTLINE, LOW PROFILE, SHRINK PITCH			.65 mm	85 Cel	-30 Cel		DUAL	R-PDSO-G16	5.5 V	1.6 mm	4.4 mm	Not Qualified	1.9 V	5-BIT AUXILIARY INPUT COUNTER				5 mm
TB31213FN	Toshiba	PLL FREQUENCY SYNTHESIZER	OTHER	24	TSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	22 mA	1	BICMOS	GULL WING	2.2 V	2.2	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SSOP24,.3	PLL or Frequency Synthesis Circuits	.65 mm	85 Cel	-30 Cel	TIN LEAD	DUAL	R-PDSO-G24	5.5 V	1.2 mm	5.6 mm	Not Qualified	1.9 V		e0			7.8 mm
TD7626AFN	Toshiba	PLL FREQUENCY SYNTHESIZER	OTHER	16	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	52 mA		BIPOLAR	GULL WING	5 V	5	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SSOP16,.25	PLL or Frequency Synthesis Circuits	.65 mm	85 Cel	-20 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G16		1.6 mm	4.4 mm	Not Qualified			e0			5 mm
TB31214FNG	Toshiba	PLL FREQUENCY SYNTHESIZER	OTHER	24	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	22 mA	1	BICMOS	GULL WING	2.2 V	2.2	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SSOP24,.3	PLL or Frequency Synthesis Circuits	.65 mm	85 Cel	-30 Cel		DUAL	R-PDSO-G24	5.5 V	1.6 mm	5.6 mm	Not Qualified	1.9 V			NOT SPECIFIED	NOT SPECIFIED	7.8 mm
TC7103F	Toshiba	PLL FREQUENCY SYNTHESIZER		10	SOP	RECTANGULAR	YES	PLASTIC/EPOXY		1		GULL WING			SMALL OUTLINE							DUAL	R-PDSO-G10	4.5 V			Not Qualified	1 V
TB31245FN	Toshiba	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	10	TSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	6.5 mA	1	BICMOS	GULL WING	3 V	3	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SSOP10,.2	PLL or Frequency Synthesis Circuits	.65 mm	85 Cel	-40 Cel	TIN LEAD	DUAL	R-PDSO-G10	5.5 V	1.2 mm	3.2 mm	Not Qualified	2.4 V		e0			4 mm
TC9172AP	Toshiba	PLL FREQUENCY SYNTHESIZER	COMMERCIAL EXTENDED	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY		1	CMOS	THROUGH-HOLE	5 V		IN-LINE			2.54 mm	75 Cel	-30 Cel	TIN LEAD	DUAL	R-PDIP-T16	5.5 V	4.45 mm	7.62 mm	Not Qualified	4.5 V		e0			19.25 mm
TB31201FN(EL)	Toshiba	PLL FREQUENCY SYNTHESIZER	OTHER	16	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	11 mA	1		GULL WING	2.2 V		SMALL OUTLINE, LOW PROFILE, SHRINK PITCH			.65 mm	85 Cel	-30 Cel		DUAL	R-PDSO-G16	5.5 V	1.6 mm	4.4 mm	Not Qualified	1.9 V	5-BIT AUXILIARY INPUT COUNTER				5 mm
TC9256F	Toshiba	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	SOP	RECTANGULAR	YES	PLASTIC/EPOXY	15 mA	1	CMOS	GULL WING	5 V	5	SMALL OUTLINE	SOP16,.3	PLL or Frequency Synthesis Circuits	1.27 mm	85 Cel	-40 Cel	TIN LEAD	DUAL	R-PDSO-G16	5.5 V	1.9 mm	5.3 mm	Not Qualified	4.5 V		e0			10.3 mm
TD6129P	Toshiba	PLL FREQUENCY SYNTHESIZER		8	DIP	RECTANGULAR	NO	PLASTIC/EPOXY		1		THROUGH-HOLE			IN-LINE			2.54 mm				DUAL	R-PDIP-T8		4.25 mm	7.62 mm	Not Qualified						9.6 mm
TB31202FNG	Toshiba	PLL FREQUENCY SYNTHESIZER	OTHER	16	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	11 mA	1	BICMOS	GULL WING	2.2 V	2.2	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SSOP16,.25	PLL or Frequency Synthesis Circuits	.65 mm	85 Cel	-30 Cel	TIN SILVER	DUAL	R-PDSO-G16	5.5 V	1.6 mm	4.4 mm	Not Qualified	1.9 V		e2			5 mm
TB31206FN(ER)	Toshiba	PLL FREQUENCY SYNTHESIZER	OTHER	16	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY		1		GULL WING	3 V		SMALL OUTLINE, LOW PROFILE, SHRINK PITCH			.65 mm	85 Cel	-30 Cel	TIN LEAD	DUAL	R-PDSO-G16	5.5 V	1.6 mm	4.4 mm	Not Qualified	2.7 V	6-BIT AUXILIARY INPUT COUNTER	e0			5 mm
TB31202FN(ER)	Toshiba	PLL FREQUENCY SYNTHESIZER	OTHER	16	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	11 mA	1		GULL WING	2.2 V		SMALL OUTLINE, LOW PROFILE, SHRINK PITCH			.65 mm	85 Cel	-30 Cel		DUAL	R-PDSO-G16	5.5 V	1.6 mm	4.4 mm	Not Qualified	1.9 V	5-BIT AUXILIARY INPUT COUNTER				5 mm
TD6128P	Toshiba	PLL FREQUENCY SYNTHESIZER		8	DIP	RECTANGULAR	NO	PLASTIC/EPOXY		1		THROUGH-HOLE			IN-LINE			2.54 mm				DUAL	R-PDIP-T8		4.25 mm	7.62 mm	Not Qualified						9.6 mm
TB31206FN	Toshiba	PLL FREQUENCY SYNTHESIZER	OTHER	16	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	21.5 mA	1	BICMOS	GULL WING	3 V	3	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SSOP16,.25	PLL or Frequency Synthesis Circuits	.65 mm	85 Cel	-30 Cel	TIN LEAD	DUAL	R-PDSO-G16	5.5 V	1.6 mm	4.4 mm	Not Qualified	2.7 V		e0			5 mm
TC9418FN	Toshiba	PLL FREQUENCY SYNTHESIZER	COMMERCIAL	24	LSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	15 mA	1	CMOS	GULL WING	3 V	2/3.3	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SSOP24,.3	PLL or Frequency Synthesis Circuits	.65 mm	60 Cel	-10 Cel	TIN LEAD	DUAL	R-PDSO-G24	3.6 V	1.6 mm	5.6 mm	Not Qualified	1.8 V		e0			7.8 mm
TC9256P	Toshiba	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	DIP	RECTANGULAR	NO	PLASTIC/EPOXY	15 mA	1	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	5.5 V	4.45 mm	7.62 mm	Not Qualified	4.5 V		e0			19.25 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.