Part | RoHS | Manufacturer | Other IC type | Temperature Grade | No. of Terminals | Package Code | Package Shape | Surface Mount | Total Dose (V) | Package Body Material | Maximum Supply Current (Isup) | No. of Functions | Technology | Screening Level | Nominal Bandwidth | Terminal Form | Maximum Negative Supply Voltage (Vsup) | Nominal Negative Supply Voltage (Vsup) | Nominal Supply Voltage (Vsup) | Power Supplies (V) | Maximum Output Frequency | 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 | Minimum Negative Supply Voltage (Vsup) | JESD-609 Code | Maximum Time At Peak Reflow Temperature (s) | Peak Reflow Temperature (C) | Length |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
STMicroelectronics |
PHASE LOCKED LOOP |
INDUSTRIAL |
36 |
HVQCCN |
SQUARE |
YES |
UNSPECIFIED |
1 |
BICMOS |
NO LEAD |
3.3 V |
CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
LCC36,.24SQ,20 |
.5 mm |
85 Cel |
-40 Cel |
QUAD |
S-XQCC-N36 |
5.4 V |
1 mm |
6 mm |
3 V |
NOT SPECIFIED |
NOT SPECIFIED |
6 mm |
||||||||||||||||
|
STMicroelectronics |
PHASE LOCKED LOOP |
INDUSTRIAL |
36 |
HVQCCN |
SQUARE |
YES |
UNSPECIFIED |
1 |
BICMOS |
NO LEAD |
3.3 V |
CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
LCC36,.24SQ,20 |
.5 mm |
85 Cel |
-40 Cel |
QUAD |
S-XQCC-N36 |
5.4 V |
1 mm |
6 mm |
3 V |
NOT SPECIFIED |
NOT SPECIFIED |
6 mm |
||||||||||||||||
STMicroelectronics |
INDUSTRIAL |
16 |
DIP |
RECTANGULAR |
NO |
CERAMIC |
CMOS |
THROUGH-HOLE |
5/15 |
IN-LINE |
DIP16,.3 |
PLL or Frequency Synthesis Circuits |
2.54 mm |
85 Cel |
-40 Cel |
TIN LEAD |
DUAL |
R-XDIP-T16 |
Not Qualified |
e0 |
||||||||||||||||||||||
|
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
28 |
SOP |
RECTANGULAR |
YES |
PLASTIC/EPOXY |
1 |
CMOS |
GULL WING |
5 V |
SMALL OUTLINE |
1.27 mm |
85 Cel |
-40 Cel |
NICKEL PALLADIUM GOLD |
DUAL |
R-PDSO-G28 |
5.5 V |
2.65 mm |
7.5 mm |
Not Qualified |
4.5 V |
ALSO REQUIRES A 10V NOMINAL SUPPLY |
e4 |
17.9 mm |
|||||||||||||||
|
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
44 |
HVQCCN |
SQUARE |
YES |
UNSPECIFIED |
1 |
BICMOS |
NO LEAD |
3.3 V |
CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
.5 mm |
85 Cel |
-40 Cel |
MATTE TIN |
QUAD |
S-XQCC-N44 |
3 |
3.45 V |
1 mm |
7 mm |
3.15 V |
IT ALSO OPERATES AT 5V SUPPLY, SELECTABLE 19/20 PRESCALER |
e3 |
40 |
260 |
7 mm |
|||||||||||||
|
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
44 |
HVQCCN |
SQUARE |
YES |
UNSPECIFIED |
1 |
BICMOS |
NO LEAD |
3.3 V |
CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
.5 mm |
85 Cel |
-40 Cel |
MATTE TIN |
QUAD |
S-XQCC-N44 |
3 |
3.45 V |
1 mm |
7 mm |
3.15 V |
IT ALSO OPERATES AT 5V SUPPLY, SELECTABLE 19/20 PRESCALER |
e3 |
40 |
260 |
7 mm |
|||||||||||||
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
28 |
SOP |
RECTANGULAR |
YES |
PLASTIC/EPOXY |
1 |
GULL WING |
5 V |
SMALL OUTLINE |
1.27 mm |
85 Cel |
-40 Cel |
TIN LEAD |
DUAL |
R-PDSO-G28 |
5.5 V |
2.65 mm |
7.5 mm |
Not Qualified |
4.5 V |
IT ALSO REQUIRES 9V TO OPERATE |
e0 |
17.9 mm |
|||||||||||||||||
|
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
44 |
HVQCCN |
SQUARE |
YES |
UNSPECIFIED |
1 |
BICMOS |
NO LEAD |
3.3 V |
CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
.5 mm |
85 Cel |
-40 Cel |
MATTE TIN |
QUAD |
S-XQCC-N44 |
3 |
3.45 V |
1 mm |
7 mm |
3.15 V |
IT ALSO OPERATES AT 5V SUPPLY, SELECTABLE 19/20 PRESCALER |
e3 |
30 |
260 |
7 mm |
|||||||||||||
|
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
44 |
HVQCCN |
SQUARE |
YES |
UNSPECIFIED |
1 |
BICMOS |
NO LEAD |
3.3 V |
CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
.5 mm |
85 Cel |
-40 Cel |
MATTE TIN |
QUAD |
S-XQCC-N44 |
3 |
3.45 V |
1 mm |
7 mm |
3.15 V |
IT ALSO OPERATES AT 5V SUPPLY, SELECTABLE 19/20 PRESCALER |
e3 |
40 |
260 |
7 mm |
|||||||||||||
STMicroelectronics |
PHASE LOCKED LOOP |
|||||||||||||||||||||||||||||||||||||||||
|
STMicroelectronics |
PHASE LOCKED LOOP |
MILITARY |
16 |
DIP |
RECTANGULAR |
NO |
PLASTIC/EPOXY |
1 |
CMOS |
THROUGH-HOLE |
5 V |
5/15 |
IN-LINE |
DIP16,.3 |
PLL or Frequency Synthesis Circuits |
2.54 mm |
125 Cel |
-55 Cel |
MATTE TIN |
DUAL |
R-PDIP-T16 |
20 V |
5.1 mm |
7.62 mm |
Not Qualified |
3 V |
e3 |
||||||||||||||
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
20 |
DIP |
RECTANGULAR |
NO |
PLASTIC/EPOXY |
1 |
THROUGH-HOLE |
5 V |
IN-LINE |
2.54 mm |
85 Cel |
-40 Cel |
TIN LEAD |
DUAL |
R-PDIP-T20 |
5.5 V |
3.93 mm |
7.62 mm |
Not Qualified |
4.5 V |
IT ALSO REQUIRES 9V TO OPERATE |
e0 |
||||||||||||||||||
|
STMicroelectronics |
PHASE LOCKED LOOP |
MILITARY |
16 |
SOP |
RECTANGULAR |
YES |
PLASTIC/EPOXY |
1 |
CMOS |
GULL WING |
5 V |
5/15 |
SMALL OUTLINE |
SOP16,.25 |
PLL or Frequency Synthesis Circuits |
1.27 mm |
125 Cel |
-55 Cel |
NICKEL PALLADIUM GOLD |
DUAL |
R-PDSO-G16 |
3 |
20 V |
1.75 mm |
3.9 mm |
Not Qualified |
3 V |
e4 |
9.9 mm |
||||||||||||
|
STMicroelectronics |
INDUSTRIAL |
28 |
QCCN |
SQUARE |
YES |
PLASTIC/EPOXY |
100 mA |
BICMOS |
NO LEAD |
3.3 V |
3.3 |
CHIP CARRIER |
LCC28,.2SQ,20 |
PLL or Frequency Synthesis Circuits |
.5 mm |
85 Cel |
-40 Cel |
QUAD |
S-PQCC-N28 |
Not Qualified |
|||||||||||||||||||||
|
STMicroelectronics |
INDUSTRIAL |
28 |
QCCN |
SQUARE |
YES |
PLASTIC/EPOXY |
100 mA |
BICMOS |
NO LEAD |
3.3 V |
3.3 |
CHIP CARRIER |
LCC28,.2SQ,20 |
PLL or Frequency Synthesis Circuits |
.5 mm |
85 Cel |
-40 Cel |
QUAD |
S-PQCC-N28 |
Not Qualified |
|||||||||||||||||||||
STMicroelectronics |
INDUSTRIAL |
16 |
DIP |
RECTANGULAR |
NO |
PLASTIC/EPOXY |
CMOS |
THROUGH-HOLE |
5/15 |
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 |
||||||||||||||||||||||
|
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
20 |
SOP |
RECTANGULAR |
YES |
PLASTIC/EPOXY |
1 |
GULL WING |
5 V |
SMALL OUTLINE |
1.27 mm |
85 Cel |
-40 Cel |
NICKEL PALLADIUM GOLD |
DUAL |
R-PDSO-G20 |
5.5 V |
2.65 mm |
7.5 mm |
Not Qualified |
4.5 V |
ALSO REQUIRES A 10V NOMINAL SUPPLY |
e4 |
12.8 mm |
||||||||||||||||
|
STMicroelectronics |
PHASE LOCKED LOOP |
NOT SPECIFIED |
NOT SPECIFIED |
||||||||||||||||||||||||||||||||||||||
|
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
28 |
SOP |
RECTANGULAR |
YES |
PLASTIC/EPOXY |
1 |
GULL WING |
5 V |
SMALL OUTLINE |
1.27 mm |
85 Cel |
-40 Cel |
NICKEL PALLADIUM GOLD |
DUAL |
R-PDSO-G28 |
5.5 V |
2.65 mm |
7.5 mm |
Not Qualified |
4.5 V |
e4 |
17.9 mm |
|||||||||||||||||
|
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
28 |
TSSOP |
RECTANGULAR |
YES |
PLASTIC/EPOXY |
1 |
CMOS |
GULL WING |
5 V |
SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
.65 mm |
85 Cel |
-40 Cel |
DUAL |
R-PDSO-G28 |
5.5 V |
1.2 mm |
4.4 mm |
Not Qualified |
4.5 V |
ALSO REQUIRES A 10V NOMINAL SUPPLY |
9.7 mm |
|||||||||||||||||
|
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
28 |
TSSOP |
RECTANGULAR |
YES |
PLASTIC/EPOXY |
1 |
CMOS |
GULL WING |
5 V |
SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
.65 mm |
85 Cel |
-40 Cel |
NICKEL PALLADIUM GOLD |
DUAL |
R-PDSO-G28 |
3 |
5.5 V |
1.2 mm |
4.4 mm |
Not Qualified |
4.5 V |
ALSO REQUIRES A 10V NOMINAL SUPPLY |
e4 |
9.7 mm |
||||||||||||||
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
OTHER |
16 |
DIP |
RECTANGULAR |
NO |
PLASTIC/EPOXY |
7.7 mA |
1 |
CMOS |
THROUGH-HOLE |
5 V |
IN-LINE |
2.54 mm |
70 Cel |
-25 Cel |
DUAL |
R-PDIP-T16 |
5.5 V |
5.1 mm |
7.62 mm |
Not Qualified |
3 V |
|||||||||||||||||||
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
20 |
SOP |
RECTANGULAR |
YES |
PLASTIC/EPOXY |
1 |
GULL WING |
5 V |
SMALL OUTLINE |
1.27 mm |
85 Cel |
-40 Cel |
TIN LEAD |
DUAL |
R-PDSO-G20 |
5.5 V |
2.65 mm |
7.5 mm |
Not Qualified |
4.5 V |
IT ALSO REQUIRES 9V TO OPERATE |
e0 |
12.8 mm |
|||||||||||||||||
|
STMicroelectronics |
PHASE LOCKED LOOP |
NOT SPECIFIED |
NOT SPECIFIED |
||||||||||||||||||||||||||||||||||||||
STMicroelectronics |
INDUSTRIAL |
28 |
QCCN |
SQUARE |
YES |
PLASTIC/EPOXY |
100 mA |
BICMOS |
NO LEAD |
3.3 V |
3.3 |
CHIP CARRIER |
LCC28,.2SQ,20 |
PLL or Frequency Synthesis Circuits |
.5 mm |
85 Cel |
-40 Cel |
QUAD |
S-PQCC-N28 |
Not Qualified |
||||||||||||||||||||||
|
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
28 |
SOP |
RECTANGULAR |
YES |
PLASTIC/EPOXY |
1 |
CMOS |
GULL WING |
5 V |
SMALL OUTLINE |
1.27 mm |
85 Cel |
-40 Cel |
TIN LEAD |
DUAL |
R-PDSO-G28 |
5.5 V |
2.65 mm |
7.5 mm |
Not Qualified |
4.5 V |
ALSO REQUIRES A 10V NOMINAL SUPPLY |
e0 |
17.9 mm |
|||||||||||||||
|
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
44 |
HVQCCN |
SQUARE |
YES |
UNSPECIFIED |
1 |
BICMOS |
NO LEAD |
3.3 V |
CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
.5 mm |
85 Cel |
-40 Cel |
MATTE TIN |
QUAD |
S-XQCC-N44 |
3 |
3.45 V |
1 mm |
7 mm |
3.15 V |
IT ALSO OPERATES AT 5V SUPPLY, SELECTABLE 19/20 PRESCALER |
e3 |
30 |
260 |
7 mm |
|||||||||||||
STMicroelectronics |
INDUSTRIAL |
28 |
QCCN |
SQUARE |
YES |
PLASTIC/EPOXY |
100 mA |
BICMOS |
NO LEAD |
3.3 V |
3.3 |
CHIP CARRIER |
LCC28,.2SQ,20 |
PLL or Frequency Synthesis Circuits |
.5 mm |
85 Cel |
-40 Cel |
QUAD |
S-PQCC-N28 |
Not Qualified |
||||||||||||||||||||||
|
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
44 |
HVQCCN |
SQUARE |
YES |
UNSPECIFIED |
1 |
BICMOS |
NO LEAD |
3.3 V |
CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
.5 mm |
85 Cel |
-40 Cel |
MATTE TIN |
QUAD |
S-XQCC-N44 |
3 |
3.45 V |
1 mm |
7 mm |
3.15 V |
IT ALSO OPERATES AT 5V SUPPLY, SELECTABLE 19/20 PRESCALER |
e3 |
40 |
260 |
7 mm |
|||||||||||||
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
28 |
TSSOP |
RECTANGULAR |
YES |
PLASTIC/EPOXY |
1 |
GULL WING |
5 V |
SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
.65 mm |
85 Cel |
-40 Cel |
Tin/Lead (Sn/Pb) |
DUAL |
R-PDSO-G28 |
5.5 V |
1.2 mm |
4.4 mm |
Not Qualified |
4.5 V |
e0 |
9.7 mm |
||||||||||||||||||
|
STMicroelectronics |
PHASE LOCKED LOOP |
MILITARY |
16 |
SOP |
RECTANGULAR |
YES |
PLASTIC/EPOXY |
1 |
CMOS |
GULL WING |
5 V |
5/15 |
SMALL OUTLINE |
SOP16,.25 |
PLL or Frequency Synthesis Circuits |
1.27 mm |
125 Cel |
-55 Cel |
NICKEL PALLADIUM GOLD |
DUAL |
R-PDSO-G16 |
1 |
20 V |
1.75 mm |
3.9 mm |
Not Qualified |
3 V |
e4 |
9.9 mm |
||||||||||||
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
OTHER |
16 |
SOP |
RECTANGULAR |
YES |
PLASTIC/EPOXY |
7.7 mA |
1 |
CMOS |
GULL WING |
5 V |
SMALL OUTLINE |
1.27 mm |
70 Cel |
-25 Cel |
DUAL |
R-PDSO-G16 |
5.5 V |
2.65 mm |
7.5 mm |
Not Qualified |
3 V |
10.3 mm |
||||||||||||||||||
|
STMicroelectronics |
PHASE LOCKED LOOP |
NOT SPECIFIED |
NOT SPECIFIED |
||||||||||||||||||||||||||||||||||||||
|
STMicroelectronics |
PHASE LOCKED LOOP |
MILITARY |
16 |
DFP |
RECTANGULAR |
YES |
100k Rad(Si) |
CERAMIC, METAL-SEALED COFIRED |
1 |
CMOS |
FLAT |
5 V |
FLATPACK |
FL16,.3 |
1.27 mm |
125 Cel |
55 Cel |
DUAL |
R-CDFP-F16 |
20 V |
2.38 mm |
6.91 mm |
3 V |
9.94 mm |
|||||||||||||||||
|
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
16 |
DIP |
RECTANGULAR |
NO |
PLASTIC/EPOXY |
1 |
CMOS |
THROUGH-HOLE |
5 V |
IN-LINE |
2.54 mm |
85 Cel |
-40 Cel |
TIN LEAD |
DUAL |
R-PDIP-T16 |
5.5 V |
5.1 mm |
7.62 mm |
Not Qualified |
4.5 V |
e0 |
|||||||||||||||||
|
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
20 |
DIP |
RECTANGULAR |
NO |
PLASTIC/EPOXY |
1 |
THROUGH-HOLE |
5 V |
IN-LINE |
2.54 mm |
85 Cel |
-40 Cel |
MATTE TIN |
DUAL |
R-PDIP-T20 |
5.5 V |
3.93 mm |
7.62 mm |
Not Qualified |
4.5 V |
ALSO REQUIRES A 10V NOMINAL SUPPLY |
e3 |
25.15 mm |
||||||||||||||||
STMicroelectronics |
PHASE LOCKED LOOP |
MILITARY |
16 |
DIP |
RECTANGULAR |
NO |
CERAMIC, GLASS-SEALED |
1 |
CMOS |
THROUGH-HOLE |
10 V |
5/15 |
IN-LINE |
DIP16,.3 |
PLL or Frequency Synthesis Circuits |
2.54 mm |
125 Cel |
-55 Cel |
TIN LEAD |
DUAL |
R-GDIP-T16 |
18 V |
5.08 mm |
7.62 mm |
Not Qualified |
3 V |
e0 |
|||||||||||||||
|
STMicroelectronics |
PHASE LOCKED LOOP |
NOT SPECIFIED |
NOT SPECIFIED |
||||||||||||||||||||||||||||||||||||||
|
STMicroelectronics |
INDUSTRIAL |
28 |
QCCN |
SQUARE |
YES |
PLASTIC/EPOXY |
100 mA |
BICMOS |
NO LEAD |
3.3 V |
3.3 |
CHIP CARRIER |
LCC28,.2SQ,20 |
PLL or Frequency Synthesis Circuits |
.5 mm |
85 Cel |
-40 Cel |
QUAD |
S-PQCC-N28 |
Not Qualified |
|||||||||||||||||||||
|
STMicroelectronics |
PHASE LOCKED LOOP |
INDUSTRIAL |
20 |
QCCJ |
SQUARE |
YES |
PLASTIC/EPOXY |
1 |
CMOS |
J BEND |
10 V |
5/15 |
CHIP CARRIER |
LDCC20,.4SQ |
PLL or Frequency Synthesis Circuits |
1.27 mm |
85 Cel |
-40 Cel |
MATTE TIN |
QUAD |
S-PQCC-J20 |
15 V |
4.57 mm |
8.965 mm |
Not Qualified |
3 V |
e3 |
8.965 mm |
|||||||||||||
|
STMicroelectronics |
PLL FREQUENCY SYNTHESIZER |
INDUSTRIAL |
16 |
SOP |
RECTANGULAR |
YES |
PLASTIC/EPOXY |
1 |
CMOS |
GULL WING |
5 V |
SMALL OUTLINE |
1.27 mm |
85 Cel |
-40 Cel |
TIN LEAD |
DUAL |
R-PDSO-G16 |
5.5 V |
2.65 mm |
7.5 mm |
Not Qualified |
4.5 V |
e0 |
10.3 mm |
||||||||||||||||
|
STMicroelectronics |
INDUSTRIAL |
28 |
QCCN |
SQUARE |
YES |
PLASTIC/EPOXY |
100 mA |
BICMOS |
NO LEAD |
3.3 V |
3.3 |
CHIP CARRIER |
LCC28,.2SQ,20 |
PLL or Frequency Synthesis Circuits |
.5 mm |
85 Cel |
-40 Cel |
QUAD |
S-PQCC-N28 |
Not Qualified |
|||||||||||||||||||||
STMicroelectronics |
PHASE LOCKED LOOP |
INDUSTRIAL |
36 |
HVQCCN |
SQUARE |
YES |
UNSPECIFIED |
1 |
BICMOS |
NO LEAD |
3.3 V |
CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
LCC36,.24SQ,20 |
.5 mm |
85 Cel |
-40 Cel |
QUAD |
S-XQCC-N36 |
5.4 V |
1 mm |
6 mm |
3 V |
6 mm |
|||||||||||||||||||
STMicroelectronics |
PHASE LOCKED LOOP |
INDUSTRIAL |
36 |
HVQCCN |
SQUARE |
YES |
UNSPECIFIED |
1 |
BICMOS |
NO LEAD |
3.3 V |
CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
LCC36,.24SQ,20 |
.5 mm |
85 Cel |
-40 Cel |
QUAD |
S-XQCC-N36 |
5.4 V |
1 mm |
6 mm |
3 V |
6 mm |
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.