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. 807-1592
FabrikantnummerAD9915BCPZ
FabrikantAnalog Devices
€ 145,09
Each
Aantal stuks
Direct Synthesizer 2.5Gsps 12 bit 1.25GHz Surface Mount - - LFCSP VQ - 88 12.1 x 12.1 x 0.86mm - 0.86mm 12.1mm
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. 538-5384
FabrikantnummerAD9952YSVZ
FabrikantAnalog Devices
€ 27,46
Each
Aantal stuks
Digital Synthesizer 400Msps 14 bit - Surface Mount - - TQFP - 48 7 x 7 x 1mm - 1mm 7mm
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. 523-7869
FabrikantnummerAD9832BRUZ
FabrikantAnalog Devices
€ 10,33
Each
Aantal stuks
Digital Synthesizer 25000ksps 10 bit - Surface Mount - - TSSOP - 16 5 x 4.4 x 1.05mm - 1.05mm 5mm
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
RS-stocknr. 538-5378
FabrikantnummerAD9859YSVZ
FabrikantAnalog Devices
€ 21,18
Each
Aantal stuks
Digital Synthesizer 400Msps 10 bit - Surface Mount - - TQFP - 48 7 x 7 x 1mm - 1mm 7mm
RS-stocknr. 497-1760
FabrikantnummerADF4106BRUZ
FabrikantAnalog Devices
€ 4,78
Each
Aantal stuks
- - - 325MHz Surface Mount 1 - CP 20 13 mA 16 5 x 4.4 x 1.05mm 6000MHz 1.05mm 5mm
RS-stocknr. 160-2710
FabrikantnummerHMC830LP6GE
FabrikantAnalog Devices
€ 15,59
Each (On a Reel of 50)
Aantal stuks
- - - 3000MHz Surface Mount 1 25MHz QFN 105 mA 40 6.1 x 6.1 x 0.9mm 3000MHz 0.9mm 6.1mm
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
RS-stocknr. 162-8142
FabrikantnummerCDCM61002RHBT
€ 4,072
Each (On a Reel of 250)
Aantal stuks
- - - 683.264MHz Surface Mount 2 43.75MHz VQFN 65 mA 32 5.15 x 5.15 x 0.95mm 28.47MHz 0.95mm 5.15mm
RS-stocknr. 759-1506
FabrikantnummerAD9912ABCPZ
FabrikantAnalog Devices
€ 56,59
Each
Aantal stuks
Direct Synthesizer 1Gsps 14 bit - Surface Mount - - LFCSP VQ - 64 9.1 x 9.1 x 0.8mm - 1mm 9.1mm
RS-stocknr. 697-7568
FabrikantnummerADF4360-7BCPZ
FabrikantAnalog Devices
€ 5,81
Each
Aantal stuks
- - - 1800MHz Surface Mount 1 350MHz CP 24 - 24 4 x 4 x 0.83mm 250MHz 0.83mm 4mm
RS-stocknr. 817-5985
FabrikantnummerCDCM61002RHBT
€ 5,59
Each
Aantal stuks
- - - 683.264MHz Surface Mount 2 43.75MHz VQFN 65 mA 32 5.15 x 5.15 x 0.95mm 28.47MHz 0.95mm 5.15mm
RS-stocknr. 538-4684
FabrikantnummerADF4112BRUZ
FabrikantAnalog Devices
€ 5,36
Each
Aantal stuks
- - - - Surface Mount 1 - TSSOP 7.5 mA 16 5 x 4.4 x 1.05mm 3000MHz 1.05mm 5mm
RS-stocknr. 162-8970
FabrikantnummerNB3N3020DTG
FabrikantON Semiconductor
€ 6,061
Each (In a Tube of 96)
Aantal stuks
- - - 210MHz Surface Mount 1 - TSSOP 75 mA 16 5.1 x 4.5 x 1.05mm 210MHz 1.05mm 5.1mm
RS-stocknr. 161-2839
FabrikantnummerSi52204-A01AGM
FabrikantSilicon Labs
€ 0,833
Each (In a Tube of 60)
Aantal stuks
- - - 100MHz Surface Mount 3 - QFN 44 mA 32 5 x 5 x 0.85mm 25MHz 0.85mm 5mm
RS-stocknr. 807-1599
FabrikantnummerAD9914BCPZ
FabrikantAnalog Devices
€ 181,50
Each
Aantal stuks
Direct Synthesizer 3.5Gsps 12 bit 1750MHz Surface Mount - - LFCSP VQ - 88 12.1 x 12.1 x 0.86mm - 0.86mm 12.1mm
RS-stocknr. 496-9616
FabrikantnummerAD9858BSVZ
FabrikantAnalog Devices
€ 75,50
Each
Aantal stuks
Digital Synthesizer 1000000ksps 10 bit - Surface Mount - - TQFP - 100 14 x 14 x 1mm - 1mm 14mm
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