Infineon Technologies Phase Locked Loops (PLL) & Frequency Synthesis Circuits 146

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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
PMB2304R	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	TSSOP	RECTANGULAR	YES	PLASTIC/EPOXY		1	CMOS		GULL WING	5 V	3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP16,.25	PLL or Frequency Synthesis Circuits	.65 mm	85 Cel	-40 Cel		DUAL	R-PDSO-G16	3	5.5 V	1.2 mm	4.4 mm	Not Qualified	2.7 V				260	5 mm
PMB2309	Infineon Technologies		OTHER	16	TSSOP	RECTANGULAR	YES	PLASTIC/EPOXY			BIPOLAR		GULL WING		3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP16,.25	PLL or Frequency Synthesis Circuits	.635 mm	85 Cel	-20 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G16					Not Qualified			e0
PMB2303	Infineon Technologies		OTHER	20	TSSOP	RECTANGULAR	YES	PLASTIC/EPOXY			BIPOLAR		GULL WING		3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	PLL or Frequency Synthesis Circuits	.635 mm	85 Cel	-20 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G20					Not Qualified			e0
PMB2306T	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	14	SOP	RECTANGULAR	YES	PLASTIC/EPOXY		1	CMOS		GULL WING	3.3 V	3.3/5	SMALL OUTLINE	SOP14,.25	PLL or Frequency Synthesis Circuits	1.27 mm	85 Cel	-40 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G14		5.5 V	1.75 mm	4 mm	Not Qualified	3 V		e0			8.75 mm
PMB2349	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	24	VQCCN	SQUARE	YES	PLASTIC/EPOXY		1	BICMOS		NO LEAD	3.6 V	3/5	CHIP CARRIER, VERY THIN PROFILE	LCC24,.17X.14,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N24		5 V	.9 mm	3.5 mm	Not Qualified	2.7 V					4.5 mm
PMB2307-R	Infineon Technologies		INDUSTRIAL	16	TSSOP	RECTANGULAR	YES	PLASTIC/EPOXY			CMOS		GULL WING		3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP16,.25	PLL or Frequency Synthesis Circuits	.635 mm	85 Cel	-40 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G16					Not Qualified			e0
PMB2304T	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	14	SOP	RECTANGULAR	YES	PLASTIC/EPOXY		1	CMOS		GULL WING	5 V	3/5	SMALL OUTLINE	SOP14,.25	PLL or Frequency Synthesis Circuits	1.27 mm	85 Cel	-40 Cel		DUAL	R-PDSO-G14		5.5 V	1.75 mm	4 mm	Not Qualified	2.7 V					8.75 mm
PMB2251V1.3	Infineon Technologies		OTHER	28	TSSOP	RECTANGULAR	YES	PLASTIC/EPOXY					GULL WING		3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP28,.25	PLL or Frequency Synthesis Circuits	.635 mm	85 Cel	-30 Cel		DUAL	R-PDSO-G28					Not Qualified
PMB2341	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	10	TSSOP	SQUARE	YES	PLASTIC/EPOXY	4 mA	1	BICMOS		GULL WING		2.7/4.5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP10,.19,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel	TIN LEAD	DUAL	S-PDSO-G10		4.5 V	1.1 mm	3 mm	Not Qualified	2.7 V	SELECTABLE PRESCALER OF 32/33 OR 64/65	e0			3 mm
PMB2308	Infineon Technologies		OTHER	16	TSSOP	RECTANGULAR	YES	PLASTIC/EPOXY			BIPOLAR		GULL WING		3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP16,.25	PLL or Frequency Synthesis Circuits	.635 mm	85 Cel	-20 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G16					Not Qualified			e0
PMB2302	Infineon Technologies		OTHER	20	TSSOP	RECTANGULAR	YES	PLASTIC/EPOXY			BIPOLAR		GULL WING		3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	PLL or Frequency Synthesis Circuits	.635 mm	85 Cel	-20 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G20					Not Qualified			e0
PMB2306R	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	TSSOP	RECTANGULAR	YES	PLASTIC/EPOXY		1	CMOS		GULL WING	3.3 V		SMALL OUTLINE, THIN PROFILE, SHRINK PITCH			.65 mm	85 Cel	-40 Cel		DUAL	R-PDSO-G16		5.5 V	1.2 mm	4.4 mm	Not Qualified	3 V					5 mm
PMB2306TV2.2	Infineon Technologies		INDUSTRIAL	14	SOP	RECTANGULAR	YES	PLASTIC/EPOXY			CMOS		GULL WING		3.3/5	SMALL OUTLINE	SOP14,.25	PLL or Frequency Synthesis Circuits	1.27 mm	85 Cel	-40 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G14					Not Qualified			e0
PMB2347	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	20	TSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	4 mA	1	BICMOS		GULL WING	3.6 V	3/5	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	PLL or Frequency Synthesis Circuits	.65 mm	85 Cel	-40 Cel		DUAL	R-PDSO-G20	3	5 V	1.2 mm	4.4 mm	Not Qualified	2.7 V	SELECTABLE PRESCALER OF 32/33 OR 64/65 AND SELECTABLE PRESCALER OF 16/17 OR 8/9			260	6.5 mm
MB15E05LPV	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	16	VQCCN	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS		NO LEAD	3 V		CHIP CARRIER, VERY THIN PROFILE			.65 mm	85 Cel	-40 Cel		QUAD	R-PQCC-N16		3.6 V	.8 mm	3.4 mm	Not Qualified	2.7 V	ALSO REQUIRES 2.7V TO 6V SUPPLY; 7-BIT SWALLOW COUNTER: 0 TO 127		NOT SPECIFIED	NOT SPECIFIED	4.55 mm
IMIS1141	Infineon Technologies		INDUSTRIAL	8	SSOP	RECTANGULAR	YES	PLASTIC/EPOXY			CMOS		GULL WING	3.6 V	3.6	SMALL OUTLINE, SHRINK PITCH	SSOP8,.3	PLL or Frequency Synthesis Circuits	.635 mm	85 Cel	-40 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G8					Not Qualified			e0
IMI145158020QB	Infineon Technologies		INDUSTRIAL	20	QCCJ	SQUARE	YES	PLASTIC/EPOXY			CMOS		J BEND	5 V	5	CHIP CARRIER	LDCC20,.4SQ	PLL or Frequency Synthesis Circuits	1.27 mm	85 Cel	-40 Cel	Tin/Lead (Sn/Pb)	QUAD	S-PQCC-J20					Not Qualified			e0
IMI145158000DG	Infineon Technologies		INDUSTRIAL								CMOS			5 V	5		DIE OR CHIP	PLL or Frequency Synthesis Circuits		85 Cel	-40 Cel								Not Qualified
IMI145158020LK	Infineon Technologies		MILITARY	20	QCCN	SQUARE	YES	CERAMIC			CMOS	38535Q/M;38534H;883B	NO LEAD	5 V	5	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
MB15F72SPPFT	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	20	TSSOP	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS		GULL WING	2.7 V		SMALL OUTLINE, THIN PROFILE, SHRINK PITCH			.65 mm	85 Cel	-40 Cel		DUAL	R-PDSO-G20		3.6 V	1.2 mm	4.4 mm	Not Qualified	2.4 V	SELECTABLE 64/65 OR 128/129 FOR 1300 MHZ PRESCALER, AND 8/9 OR 16/17 FOR 350 MHZ PRESCALER		NOT SPECIFIED	NOT SPECIFIED	6.5 mm
MB15F73UVPVB	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	18	VBCC	RECTANGULAR	YES	PLASTIC/EPOXY	2.8 mA	2	BICMOS		BUTT	2.7 V	2.4/3.6	CHIP CARRIER, VERY THIN PROFILE	LCC18,.09X.1,18	PLL or Frequency Synthesis Circuits	.45 mm	85 Cel	-40 Cel		BOTTOM	R-PBCC-B18		3.6 V	.5 mm	2.4 mm	Not Qualified	2.4 V			NOT SPECIFIED	NOT SPECIFIED	2.7 mm
MB15F72UVPVB	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	18	VBCC	RECTANGULAR	YES	PLASTIC/EPOXY	2.1 mA	2	BICMOS		BUTT	2.7 V	2.4/3.6	CHIP CARRIER, VERY THIN PROFILE	LCC18,.09X.1,18	PLL or Frequency Synthesis Circuits	.45 mm	85 Cel	-40 Cel		BOTTOM	R-PBCC-B18		3.6 V	.5 mm	2.4 mm	Not Qualified	2.4 V			NOT SPECIFIED	NOT SPECIFIED	2.7 mm
MB15F78ULPFT	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	20	TSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	3.9 mA		BICMOS		GULL WING		2.4/3.6	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	PLL or Frequency Synthesis Circuits	.635 mm	85 Cel	-40 Cel		DUAL	R-PDSO-G20					Not Qualified
MB15F73ULWQN	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	20	QCCN	SQUARE	YES	PLASTIC/EPOXY	2.8 mA		BICMOS		NO LEAD		2.4/3.6	CHIP CARRIER	LCC20,.16SQ,20	PLL or Frequency Synthesis Circuits	.5 mm	85 Cel	-40 Cel		QUAD	S-PQCC-N20					Not Qualified
MB15E03PV	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
MB15E03LPFV1	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
IMI145155020LK	Infineon Technologies		MILITARY	20	QCCN	SQUARE	YES	CERAMIC			CMOS	38535Q/M;38534H;883B	NO LEAD		3/7	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
MB15F07SLPV	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	1	3.6 V	.8 mm	4.2 mm	Not Qualified	2.4 V			NOT SPECIFIED	245	4.55 mm
MB15F72ULPFT	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	20	TSSOP	RECTANGULAR	YES	PLASTIC/EPOXY	2.5 mA		BICMOS		GULL WING		2.4/3.6	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	TSSOP20,.25	PLL or Frequency Synthesis Circuits	.635 mm	85 Cel	-40 Cel		DUAL	R-PDSO-G20					Not Qualified
MB15E07SRPV	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
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
MB15F72ULPV	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	20	VBCC	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS		BUTT	2.7 V		CHIP CARRIER, VERY THIN PROFILE			.5 mm	85 Cel	-40 Cel		BOTTOM	R-PBCC-B20		3.6 V	.6 mm	3.4 mm	Not Qualified	2.4 V	SELECTABLE 64/65 OR 128/129 FOR 1300 MHZ PRESCALER, AND 8/9 OR 16/17 FOR 350 MHZ PRESCALER				3.6 mm
IMI145152028XB	Infineon Technologies		INDUSTRIAL	28	SOP	RECTANGULAR	YES	PLASTIC/EPOXY			CMOS		GULL WING		3/9	SMALL OUTLINE	SOP28,.4	PLL or Frequency Synthesis Circuits	1.27 mm	85 Cel	-40 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDSO-G28					Not Qualified			e0
IMI145155000DQ	Infineon Technologies		MILITARY								CMOS				3/7		DIE OR CHIP	PLL or Frequency Synthesis Circuits		125 Cel	-55 Cel								Not Qualified
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
IMI145155018SK	Infineon Technologies		MILITARY	18	DIP	RECTANGULAR	NO	CERAMIC			CMOS	38535Q/M;38534H;883B	THROUGH-HOLE		3/7	IN-LINE	DIP18,.3	PLL or Frequency Synthesis Circuits	2.54 mm	125 Cel	-55 Cel	Tin/Lead (Sn/Pb)	DUAL	R-XDIP-T18					Not Qualified			e0
IMI4350PB	Infineon Technologies	PHASE DETECTOR	INDUSTRIAL	8	DIP	RECTANGULAR	NO	PLASTIC/EPOXY			CMOS		THROUGH-HOLE		3/5	IN-LINE	DIP8,.3	PLL or Frequency Synthesis Circuits	2.54 mm	85 Cel	-40 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T8					Not Qualified			e0
IMI145152028ST	Infineon Technologies		MILITARY	28	DIP	RECTANGULAR	NO	CERAMIC			CMOS		THROUGH-HOLE		3/9	IN-LINE	DIP28,.6	PLL or Frequency Synthesis Circuits	2.54 mm	125 Cel	-55 Cel	TIN LEAD	DUAL	R-XDIP-T28					Not Qualified			e0
IMI145155000DG	Infineon Technologies		INDUSTRIAL								CMOS				3/7		DIE OR CHIP	PLL or Frequency Synthesis Circuits		85 Cel	-40 Cel								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
IMI145151PB	Infineon Technologies		INDUSTRIAL	28	DIP	RECTANGULAR	NO	PLASTIC/EPOXY			CMOS		THROUGH-HOLE		3/5	IN-LINE	DIP28,.3	PLL or Frequency Synthesis Circuits	2.54 mm	85 Cel	-40 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T28					Not Qualified			e0
IMI145156020ST	Infineon Technologies		MILITARY	20	DIP	RECTANGULAR	NO	CERAMIC			CMOS		THROUGH-HOLE			IN-LINE	DIP20,.3	PLL or Frequency Synthesis Circuits	2.54 mm	125 Cel	-55 Cel	Tin/Lead (Sn/Pb)	DUAL	R-XDIP-T20					Not Qualified			e0
IMI145152PB	Infineon Technologies		INDUSTRIAL	28	DIP	RECTANGULAR	NO	PLASTIC/EPOXY			CMOS		THROUGH-HOLE		3/5	IN-LINE	DIP28,.3	PLL or Frequency Synthesis Circuits	2.54 mm	85 Cel	-40 Cel	Tin/Lead (Sn/Pb)	DUAL	R-PDIP-T28					Not Qualified			e0
IMI145155018ST	Infineon Technologies		MILITARY	18	DIP	RECTANGULAR	NO	CERAMIC			CMOS		THROUGH-HOLE		3/7	IN-LINE	DIP18,.3	PLL or Frequency Synthesis Circuits	2.54 mm	125 Cel	-55 Cel	Tin/Lead (Sn/Pb)	DUAL	R-XDIP-T18					Not Qualified			e0
MB15F73SPPV	Infineon Technologies	PLL FREQUENCY SYNTHESIZER	INDUSTRIAL	20	VBCC	RECTANGULAR	YES	PLASTIC/EPOXY		1	BICMOS		BUTT	2.7 V		CHIP CARRIER, VERY THIN PROFILE			.5 mm	85 Cel	-40 Cel		BOTTOM	R-PBCC-B20		3.6 V	.8 mm	3.4 mm	Not Qualified	2.4 V	SELECTABLE 64/65 OR 128/129 PRESCALER; 7 BIT SWALLOW COUNTER		NOT SPECIFIED	NOT SPECIFIED	3.6 mm
IMI145158020LT	Infineon Technologies		MILITARY	20	QCCN	SQUARE	YES	CERAMIC			CMOS		NO LEAD	5 V	5	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
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

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.