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.


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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. 161-2846
FabrikantnummerSi5332B-C-GM2
FabrikantSilicon Labs
6,387 €
Each (In a Tray of 490)
Aantal stuks
- - - 200MHz Surface Mount 10 5MHz QFN 70 mA 40 6 x 6 x 0.85mm 50 MHz, 170 MHz, 250MHz 0.85mm 6mm
RS-stocknr. 709-7547
FabrikantnummerADF4116BRUZ
FabrikantAnalog Devices
5,53 €
Each
Aantal stuks
- - - - Surface Mount 1 - TSSOP 5.5 mA 16 5 x 4.4 x 1.05mm 550MHz 1.05mm 5mm
RS-stocknr. 161-2838
FabrikantnummerSi52208-A01AGM
FabrikantSilicon Labs
2,807 €
Each (In a Tray of 490)
Aantal stuks
- - - 100MHz Surface Mount 4 - QFN 63 mA 48 6 x 6 x 0.85mm 25MHz 0.85mm 6mm
RS-stocknr. 796-8710
FabrikantnummerADF4351BCPZ
FabrikantAnalog Devices
12,40 €
Each
Aantal stuks
- - - 4400MHz Surface Mount 1 35MHz LFCSP 27 mA 32 5 x 4.75 x 0.95mm 250MHz 0.95mm 5mm
RS-stocknr. 161-2864
FabrikantnummerSi52208-A01AGM
FabrikantSilicon Labs
3,475 €
Each (In a Pack of 2)
Aantal stuks
- - - 100MHz Surface Mount 4 - QFN 63 mA 48 6 x 6 x 0.85mm 25MHz 0.85mm 6mm
RS-stocknr. 145-3624
FabrikantnummerNBC12439AMNG
FabrikantON Semiconductor
8,103 €
Each (In a Tube of 74)
Aantal stuks
- - - 800MHz Surface Mount 1 400MHz QFN 85 mA 32 5 x 5 x 0.95mm 20MHz 0.95mm 5mm
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. 912-6319
FabrikantnummerAD9910BSVZ
FabrikantAnalog Devices
47,745 €
Each (In a Tray of 90)
Aantal stuks
Digital Synthesizer 1000000ksps 14 bit - Surface Mount - - TQFP - 100 14 x 14 x 1mm - 1mm 14mm
RS-stocknr. 620-2173
FabrikantnummerCDCVF25084PW
4,68 €
Each
Aantal stuks
- - - 180MHz Surface Mount 1 10MHz TSSOP - 16 5 x 4.4 x 1.15mm 45MHz 1.15mm 5mm
RS-stocknr. 807-1794
FabrikantnummerADF4157BCPZ
FabrikantAnalog Devices
6,42 €
Each
Aantal stuks
- - - 5800MHz Surface Mount 1 - LFCSP 29 mA 20 4.1 x 4.1 x 0.75mm 6GHz 0.75mm 4.1mm
RS-stocknr. 787-6930
FabrikantnummerNB3N5573DTG
FabrikantON Semiconductor
4,04 €
Each
Aantal stuks
- - - 200MHz Surface Mount 2 25MHz TSSOP 135 mA 16 5.1 x 4.5 x 1.05mm 25MHz 1.05mm 5.1mm
Nieuw
RS-stocknr. 217-7877
Fabrikantnummer5V41068APGGI
4,075 €
Each (In a Pack of 2)
Aantal stuks
Digital Synthesiser - - - Surface Mount 1 - TSSOP - 16 - - - -
RS-stocknr. 708-9375
FabrikantnummerAD9958BCPZ
FabrikantAnalog Devices
32,30 €
Each
Aantal stuks
Digital Synthesizer 500Msps 10 bit - Surface Mount - - LFCSP - 56 8 x 8 x 0.83mm - 0.83mm 8mm
RS-stocknr. 523-7162
FabrikantnummerADF4001BRUZ
FabrikantAnalog Devices
3,83 €
Each
Aantal stuks
- - - - Surface Mount 1 - CP 20 5.5 mA 16 5 x 4.4 x 1.05mm 200MHz 1.05mm 5mm
RS-stocknr. 523-6383
FabrikantnummerADF4113BRUZ
FabrikantAnalog Devices
5,06 €
Each
Aantal stuks
- - - - Surface Mount 1 - CP 20 11 mA 16 5 x 4.4 x 1.05mm 4000MHz 1.05mm 5mm
RS-stocknr. 145-6056
FabrikantnummerSN74LV4046AN
0,567 €
Each (In a Tube of 25)
Aantal stuks
- - - 38MHz Through Hole - - PDIP ±70 mA 16 19.69 x 6.6 x 4.57mm - 4.57mm 19.69mm
Nieuw
RS-stocknr. 217-7876
Fabrikantnummer5V41068APGGI
3,411 €
Each (In a Tube of 96)
Aantal stuks
Digital Synthesiser - - - Surface Mount 1 - TSSOP - 16 - - - -