QCCN Phase Locked Loops (PLL) & Frequency Synthesis Circuits 278

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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
LMX2531LQE1146E/NOPB	Texas Instruments	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	36	QCCN	SQUARE	YES	PLASTIC/EPOXY	49 mA		BICMOS		NO LEAD	3 V	3	CHIP CARRIER	LCC36,.25SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	MATTE TIN	QUAD	S-PQCC-N36	3				Not Qualified			e3	30	260
LMX2531LQX3010E/NOPB	Texas Instruments	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	36	QCCN	SQUARE	YES	PLASTIC/EPOXY	52 mA		BICMOS		NO LEAD	3 V	3	CHIP CARRIER	LCC36,.25SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	MATTE TIN	QUAD	S-PQCC-N36	3				Not Qualified			e3	30	260
LMX2332LSLBX/NOPB	Texas Instruments	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	24	QCCN	RECTANGULAR	YES	PLASTIC/EPOXY	4.1 mA	1	BICMOS		NO LEAD	3 V	3/5	CHIP CARRIER	LCC24,.17X.14,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	R-PQCC-N24		5.5 V	1.1 mm	3.5 mm	Not Qualified	2.7 V	SELECTABLE PRESCALER OF 64/65 OR 128/129 AND 8/9 OR 16/17				4.5 mm
LMX2531LQX1910E/NOPB	Texas Instruments	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	36	QCCN	SQUARE	YES	PLASTIC/EPOXY	46 mA		BICMOS		NO LEAD	3 V	3	CHIP CARRIER	LCC36,.25SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	MATTE TIN	QUAD	S-PQCC-N36	3				Not Qualified			e3	30	260
LMX2531LQX1570E/NOPB	Texas Instruments	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	36	QCCN	SQUARE	YES	PLASTIC/EPOXY	46 mA		BICMOS		NO LEAD	3 V	3	CHIP CARRIER	LCC36,.25SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	MATTE TIN	QUAD	S-PQCC-N36	3				Not Qualified			e3	30	260
LMX2531LQX1700E/NOPB	Texas Instruments	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	36	QCCN	SQUARE	YES	PLASTIC/EPOXY	46 mA		BICMOS		NO LEAD	3 V	3	CHIP CARRIER	LCC36,.25SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	MATTE TIN	QUAD	S-PQCC-N36	3				Not Qualified			e3	30	260
LMX2370SLBX	Texas Instruments	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	24	QCCN	RECTANGULAR	YES	UNSPECIFIED	8.5 mA	1	BICMOS		NO LEAD	3 V	3/5	CHIP CARRIER	LCC24,.17X.14,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	TIN LEAD	QUAD	R-XQCC-N24		5.5 V	1.2 mm	3.5 mm	Not Qualified	2.7 V		e0			4.5 mm
LMX2531LQX1515E/NOPB	Texas Instruments	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	36	QCCN	SQUARE	YES	PLASTIC/EPOXY	49 mA		BICMOS		NO LEAD	3 V	3	CHIP CARRIER	LCC36,.25SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	MATTE TIN	QUAD	S-PQCC-N36	3				Not Qualified			e3	30	260
LMX2331USLBX	Texas Instruments	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	24	QCCN	RECTANGULAR	YES	PLASTIC/EPOXY	3.8 mA	1	BICMOS		NO LEAD	3 V	3	CHIP CARRIER	LCC24,.17X.14,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	TIN LEAD	QUAD	R-PQCC-N24		5.5 V	1.1 mm	3.5 mm	Not Qualified	2.7 V	DUAL MODULUS PRESCALER (RF): 64/65 OR 128/129 AND DUAL MODULUS PRESCALER (IF): 8/9 OR 16/17	e0			4.5 mm
LMX2531LQX1778E/NOPB	Texas Instruments	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	36	QCCN	SQUARE	YES	PLASTIC/EPOXY	46 mA		BICMOS		NO LEAD	3 V	3	CHIP CARRIER	LCC36,.25SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	MATTE TIN	QUAD	S-PQCC-N36	3				Not Qualified			e3	30	260
LMX2354SLBX	Texas Instruments	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	24	QCCN	SQUARE	YES	UNSPECIFIED	8.5 mA	1	BICMOS		NO LEAD	3 V	3/5	CHIP CARRIER	LCC24,.17X.14,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	Nickel/Gold (Ni/Au)	QUAD	S-XQCC-N24	2	5.5 V	1.2 mm	3.5 mm	Not Qualified	2.7 V	SELECTABLE PRESCALER OF 16/17 OR 20/21 AND 8/9 OR 12/13	e4	30	235	4.5 mm
LMX2316SLBX	Texas Instruments	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	QCCN	SQUARE	YES	UNSPECIFIED		1	BICMOS		NO LEAD	3 V		CHIP CARRIER			.5 mm	85 Cel	-40 Cel		QUAD	S-XQCC-N16	2	5.5 V	1.1 mm	3.5 mm		2.3 V				235	3.5 mm
LMX2353SLBX	Texas Instruments	PHASE LOCKED LOOP	INDUSTRIAL	16	QCCN	SQUARE	YES	CERAMIC, METAL-SEALED COFIRED		1	BICMOS		NO LEAD	3 V	3	CHIP CARRIER	LCC16,.14SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	TIN LEAD	QUAD	S-CQCC-N16		5.5 V	1.1 mm	3.5 mm	Not Qualified	2.7 V		e0			3.5 mm
LMX2377USLBX	Texas Instruments	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	24	QCCN	RECTANGULAR	YES	PLASTIC/EPOXY	4.6 mA	1	BICMOS		NO LEAD	3 V	3	CHIP CARRIER	LCC24,.17X.14,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	TIN LEAD	QUAD	R-PQCC-N24		5.5 V	1.1 mm	3.5 mm	Not Qualified	2.7 V	SELECTABLE 32/33, 16/17 OR 8/9 PRESCALER	e0			4.5 mm
AD9901TE/883	Analog Devices	PHASE DETECTOR	MILITARY	20	QCCN	SQUARE	YES	CERAMIC, METAL-SEALED COFIRED		1		MIL-STD-883	NO LEAD	5 V	5/-5.2	CHIP CARRIER	LCC20,.35SQ	PLL or Frequency Synthesis Circuits	1.27 mm	125 Cel	-55 Cel	TIN LEAD	QUAD	S-CQCC-N20		5.5 V	2.54 mm	8.89 mm	Not Qualified	4.5 V	ALSO OPERATES AT -5.2 V SUPPLY	e0			8.89 mm
5962-9097901M2X	Analog Devices		MILITARY	20	QCCN	SQUARE	YES	CERAMIC, METAL-SEALED COFIRED		1			NO LEAD	5 V		CHIP CARRIER				125 Cel	-55 Cel		QUAD	S-CQCC-N20					Not Qualified		ALSO OPERATES AT -5.2 V SUPPLY
HMC1032LP6GETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY	100 mA				NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	MATTE TIN	QUAD	S-PQCC-N40	1				Not Qualified			e3	30	260
AD9959YSV	Analog Devices		INDUSTRIAL	56	QCCN	SQUARE	YES	PLASTIC/EPOXY			CMOS		NO LEAD		1.8,3.3	CHIP CARRIER	LCC56,.31SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N56					Not Qualified
HMC1034LP6GETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	MATTE TIN	QUAD	S-PQCC-N40	1				Not Qualified			e3	30	260
AD9959YSV-REEL7	Analog Devices		INDUSTRIAL	56	QCCN	SQUARE	YES	PLASTIC/EPOXY			CMOS		NO LEAD		1.8,3.3	CHIP CARRIER	LCC56,.31SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N56					Not Qualified
AD9901TE	Analog Devices	PHASE DETECTOR	MILITARY	20	QCCN	SQUARE	YES	CERAMIC			BIPOLAR		NO LEAD		5/-5.2	CHIP CARRIER	LCC20,.35SQ	PLL or Frequency Synthesis Circuits	1.27 mm	125 Cel	-55 Cel	Tin/Lead (Sn/Pb)	QUAD	S-XQCC-N20					Not Qualified			e0
5962-9097901M2A	Analog Devices	PHASE LOCKED LOOP	MILITARY	20	QCCN	SQUARE	YES	CERAMIC, METAL-SEALED COFIRED		1		MIL-STD-883	NO LEAD	5 V		CHIP CARRIER				125 Cel	-55 Cel	TIN LEAD	QUAD	S-CQCC-N20	1				Not Qualified		ALSO OPERATES AT -5.2 V SUPPLY	e0
HMC699LP5ERTR	Analog Devices		INDUSTRIAL	32	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD	5 V	5	CHIP CARRIER	LCC32,.2SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N32					Not Qualified
V62/11606-01YB	Analog Devices		MILITARY	20	QCCN	SQUARE	YES	PLASTIC/EPOXY	13 mA		BICMOS		NO LEAD	3 V	3	CHIP CARRIER	LCC20,.16SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	125 Cel	-55 Cel		QUAD	S-PQCC-N20
HMC699LP5RTR	Analog Devices		INDUSTRIAL	32	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD	5 V	5	CHIP CARRIER	LCC32,.2SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N32					Not Qualified
AD9958YSV	Analog Devices		INDUSTRIAL	56	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD		1.8,3.3	CHIP CARRIER	LCC56,.31SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N56					Not Qualified
AD9958YSV-REEL7	Analog Devices		INDUSTRIAL	56	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD		1.8,3.3	CHIP CARRIER	LCC56,.31SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N56					Not Qualified
AD9901TE/883B	Analog Devices	PHASE LOCKED LOOP	MILITARY	20	QCCN	SQUARE	YES	CERAMIC, METAL-SEALED COFIRED		1	BIPOLAR		NO LEAD	5 V	5/-5.2	CHIP CARRIER	LCC20,.35SQ	PLL or Frequency Synthesis Circuits	1.27 mm	125 Cel	-55 Cel	TIN LEAD	QUAD	S-CQCC-N20		5.5 V	2.54 mm	8.89 mm	Not Qualified	4.5 V		e0			8.89 mm
HMC831LP6CETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N40					Not Qualified				NOT SPECIFIED	NOT SPECIFIED
HMC820LP6CETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N40					Not Qualified				NOT SPECIFIED	NOT SPECIFIED
HMC840LP6CETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	MATTE TIN	QUAD	S-PQCC-N40	1				Not Qualified			e3	30	260
HMC700LP4RTR	Analog Devices		INDUSTRIAL	24	QCCN	SQUARE	YES	PLASTIC/EPOXY	110 mA		BICMOS		NO LEAD		3.3,5	CHIP CARRIER	LCC24,.16SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N24					Not Qualified
HMC828LP6CETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	MATTE TIN	QUAD	S-PQCC-N40	1				Not Qualified			e3		260
HMC778LP6CETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY	290 mA		CMOS		NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N40					Not Qualified				NOT SPECIFIED	NOT SPECIFIED
HMC824LP6CETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N40					Not Qualified				NOT SPECIFIED	NOT SPECIFIED
HMC837LP6CETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N40					Not Qualified				NOT SPECIFIED	NOT SPECIFIED
HMC807LP6CETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY	250 mA				NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N40					Not Qualified				NOT SPECIFIED	NOT SPECIFIED
HMC783LP6CETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY	190 mA				NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N40					Not Qualified				NOT SPECIFIED	NOT SPECIFIED
HMC764LP6CETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY	290 mA				NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	MATTE TIN	QUAD	S-PQCC-N40	3				Not Qualified			e3	30	260
HMC826LP6CETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N40					Not Qualified				NOT SPECIFIED	NOT SPECIFIED
HMC838LP6CETR	Analog Devices	PHASE DETECTOR	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N40					Not Qualified				NOT SPECIFIED	NOT SPECIFIED
HMC839LP6CETR	Analog Devices	PHASE DETECTOR	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N40					Not Qualified				NOT SPECIFIED	NOT SPECIFIED
HMC769LP6CETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY	300 mA				NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N40					Not Qualified				NOT SPECIFIED	NOT SPECIFIED
HMC822LP6CETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY			CMOS		NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N40					Not Qualified				NOT SPECIFIED	NOT SPECIFIED
HMC834LP6GETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	MATTE TIN	QUAD	S-PQCC-N40	1				Not Qualified			e3		260
HMC836LP6CETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N40					Not Qualified				NOT SPECIFIED	NOT SPECIFIED
HMC700LP4ERTR	Analog Devices		INDUSTRIAL	24	QCCN	SQUARE	YES	PLASTIC/EPOXY	110 mA		BICMOS		NO LEAD		3.3,5	CHIP CARRIER	LCC24,.16SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N24					Not Qualified
HMC767LP6CETR	Analog Devices	PHASE LOCKED LOOP	INDUSTRIAL	40	QCCN	SQUARE	YES	PLASTIC/EPOXY					NO LEAD		3.3,5	CHIP CARRIER	LCC40,.24SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	MATTE TIN	QUAD	S-PQCC-N40	3				Not Qualified			e3	30	260

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.