Clock Synthesizers

A clock synthesizer is an electronic circuit that converts a single clock signal frequency into a range of output frequencies. Frequency values are given in MHz. Clock synthesizers can generate frequencies in multiples of the original, also known as a conversion rate. They can work in a phase-locked look, also known as a PLL.

Clock synthesizers are semiconductor devices which come in a standard package, such has a QFN, TSSOP or SOIC.

Where are Clock Synthesizersused used?

  • Wireless devices
  • RF devices
  • Radio
  • GPS
  • TV
  • Mobile phones

What is a PLL Synthesizer?

PLL synthesizers are analogue devices. A PLL circuit features a Voltage-Controlled Oscillator (VCO). The VCO output is constantly adjusted to match the phase and frequency of an input signal, using feedback from a Phase Comparator. A PLL circuit is often used to synchronise (lock) RF receiver circuits to an incoming carrier signal. If a frequency divider integer-n is introduced between the VCO output and the phase comparator, the PLL circuit output frequency will be fin/n, locked in phase to fin. If fin comes from a highly-stable fixed frequency oscillator and n is programmable, then the circuit forms the basis of an accurate Digital Frequency Synthesizer.

What is a Direct Digital Synthesizer?

Direct digital synthesizers (DDS) are digital devices. They are made up of a crystal oscillator, an NCO (numerically controlled oscillator) and a DAC (digital-to-analogue converter). DDS, in comparison to an analogue PLL synthesizer, offer improved phase noise and better control over the output where there are transitions between frequencies. They also offer better jitter performance.


...
Lees meer Lees minder

Filters

21 - 40 van 177 producten worden weergegeven
Resultaten per pagina
Omschrijving Prijs Category Conversion Rate Resolution Maximum Output Frequency Mounting Type Number of Elements per Chip Minimum Output Frequency Package Type Maximum Supply Current Pin Count Dimensions Maximum Input Frequency Height Length
RS-stocknr. 413-011
FabrikantnummerAD9851BRSZ
FabrikantAnalog Devices
25,72 €
Each
Aantal stuks
Digital Synthesizer 180000ksps 10 bit - Surface Mount - - SSOP - 28 10.2 x 5.3 x 1.75mm - 1.75mm 10.2mm
RS-stocknr. 162-4153
FabrikantnummerCD74HCT7046AE
2,053 €
Each (In a Tube of 25)
Aantal stuks
- - - - Through Hole 1 - PDIP - 16 19.3 x 6.35 x 4.57mm - 4.57mm 19.3mm
RS-stocknr. 161-2591
FabrikantnummerNB4N507ADG
FabrikantON Semiconductor
2,853 €
Each (In a Tube of 48)
Aantal stuks
- - - 200MHz Surface Mount 1 50MHz SOIC 35 mA 16 10 x 4 x 1.5mm 27MHz 1.5mm 10mm
RS-stocknr. 483-6774
Fabrikantnummer74HCT9046AD,112
FabrikantNexperia
2,232 €
Each (In a Pack of 5)
Aantal stuks
- - - - Surface Mount 1 - SOIC - 16 10 x 4 x 1.45mm - 1.45mm 10mm
RS-stocknr. 708-9729
FabrikantnummerAD9959BCPZ
FabrikantAnalog Devices
53,75 €
Each
Aantal stuks
Digital Synthesizer 500Msps 10 bit - Surface Mount - - LFCSP - 56 8 x 8 x 0.83mm - 0.83mm 8mm
RS-stocknr. 523-7516
FabrikantnummerAD9831ASTZ
FabrikantAnalog Devices
12,90 €
Each
Aantal stuks
Digital Synthesizer 25000ksps 10 bit - Surface Mount - - LQFP - 48 7 x 7 x 1.4mm - 1.4mm 7mm
RS-stocknr. 759-1483
FabrikantnummerAD9854ASVZ
FabrikantAnalog Devices
44,30 €
Each
Aantal stuks
Direct Synthesizer 300Msps 12 bit - Surface Mount - - TQFP - 80 16.2 x 16.2 x 1.2mm - 1.2mm 16.2mm
RS-stocknr. 189-8648
FabrikantnummerDS1080LU+
FabrikantMaxim Integrated
2,034 €
Each (In a Pack of 5)
Aantal stuks
- - - 134MHz Surface Mount 1 16MHz μSOP 15 mA 8 3.1 x 3.1 x 0.95mm 33.4MHz 0.95mm 3.1mm
RS-stocknr. 650-122
FabrikantnummerCD74HCT7046AE
2,41 €
Each
Aantal stuks
- - - - Through Hole 1 - PDIP - 16 19.3 x 6.35 x 4.57mm - 4.57mm 19.3mm
RS-stocknr. 709-0069
FabrikantnummerADF4107BCPZ
FabrikantAnalog Devices
5,33 €
Each
Aantal stuks
- - - - Surface Mount 1 - CP 20 - 20 4 x 4 x 0.83mm 7000MHz 0.83mm 4mm
RS-stocknr. 145-3853
FabrikantnummerNB3N502DG
FabrikantON Semiconductor
2,531 €
Each (In a Tube of 98)
Aantal stuks
- - - 190MHz Surface Mount 1 14MHz SOIC 20 mA 8 5 x 4 x 1.5mm 50MHz 1.5mm 5mm
RS-stocknr. 709-6020
FabrikantnummerAD5934YRSZ
FabrikantAnalog Devices
17,89 €
Each
Aantal stuks
Digital Synthesizer 250ksps 12 bit - Surface Mount - - SSOP - 16 6.2 x 5.3 x 1.75mm - 1.75mm 6.2mm
RS-stocknr. 523-8222
FabrikantnummerAD9830ASTZ
FabrikantAnalog Devices
23,37 €
Each
Aantal stuks
Digital Synthesizer 50Msps 10 bit - Surface Mount - - LQFP - 48 7 x 7 x 1.4mm - 1.4mm 7mm
RS-stocknr. 368-7521
FabrikantnummerHEF4046BT,652
FabrikantNexperia
0,39 €
Each (In a Tube of 50)
Aantal stuks
- - - - Surface Mount 1 - SOIC - 16 10 x 4 x 1.45mm - 1.45mm 10mm
RS-stocknr. 880-6976
FabrikantnummerSi5341A-D-GM
FabrikantSilicon Labs
16,59 €
Each
Aantal stuks
- - - 712.5MHz Surface Mount 1 0.0001MHz QFN 150 mA 64 9 x 9 x 0.85mm 750MHz 0.85mm 9mm
RS-stocknr. 697-7561
FabrikantnummerADF4360-8BCPZ
FabrikantAnalog Devices
5,98 €
Each
Aantal stuks
Integrated Synthesizer - - - Surface Mount - - LFCSP - 24 4 x 4 x 0.83mm - 0.83mm 4mm
RS-stocknr. 809-9364
FabrikantnummerAD9838BCPZ-RL7
FabrikantAnalog Devices
5,22 €
Each
Aantal stuks
Direct Synthesizer 16Msps 10 bit 16MHz Surface Mount - - LFCSP WD - 20 4.1 x 4.1 x 0.75mm - 0.75mm 4.1mm
RS-stocknr. 162-5220
FabrikantnummerPLL1708DBQ
2,063 €
Each (In a Tube of 50)
Aantal stuks
- - - - Surface Mount 2 - SSOP 25 mA 20 8.75 x 4 x 1.5mm 27.27MHz 1.5mm 8.75mm
RS-stocknr. 162-7733
FabrikantnummerLMK03806BISQE/NOPB
6,782 €
Each (On a Reel of 250)
Aantal stuks
- - - 312.5MHz Surface Mount 1 - WQFN 445 mA 64 9.1 x 9.1 x 0.8mm 500MHz 0.8mm 9.1mm
RS-stocknr. 634-192
FabrikantnummerCD74HCT297E
3,11 €
Each
Aantal stuks
- - - - Through Hole 1 - PDIP - 16 19.3 x 6.35 x 4.57mm - 4.57mm 19.3mm