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. 862-6458
FabrikantnummerHMC830LP6GE
FabrikantAnalog Devices
18,22 €
Each
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. 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. 178-9154
FabrikantnummerCD74HCT4046AM
0,398 €
Each (In a Tube of 40)
Aantal stuks
- - - - Surface Mount 1 - SOIC - 16 9.9 x 3.91 x 1.58mm - 1.58mm 9.9mm
RS-stocknr. 662-4595
FabrikantnummerCD74HCT4046AM
0,406 €
Each (In a Pack of 10)
Aantal stuks
- - - - Surface Mount 1 - SOIC - 16 9.9 x 3.91 x 1.58mm - 1.58mm 9.9mm
RS-stocknr. 133-0680
FabrikantnummerLMX2581SQE/NOPB
5,84 €
Each
Aantal stuks
- - - 3760MHz Surface Mount 4 50MHz WQFN 134 mA 32 5 x 5 x 0.8mm 900MHz 0.8mm 5mm
RS-stocknr. 168-5010
FabrikantnummerLMX2581SQE/NOPB
5,735 €
Each (On a Reel of 250)
Aantal stuks
- - - 3760MHz Surface Mount 4 50MHz WQFN 134 mA 32 5 x 5 x 0.8mm 900MHz 0.8mm 5mm
RS-stocknr. 662-3961
FabrikantnummerCD74HC4046AM96
0,406 €
Each (In a Pack of 10)
Aantal stuks
- - - - Surface Mount 1 - SOIC - 16 9.9 x 3.91 x 1.58mm - 1.58mm 9.9mm
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. 709-1965
FabrikantnummerCD4046BE
0,443 €
Each (In a Pack of 10)
Aantal stuks
- - - - Through Hole 1 - PDIP - 16 19.3 x 6.35 x 4.57mm - 4.57mm 19.3mm
RS-stocknr. 708-9943
FabrikantnummerADF4108BCPZ
FabrikantAnalog Devices
6,67 €
Each
Aantal stuks
- - - 325MHz Surface Mount 1 - CP 20 1 17 mA 20 4 x 4 x 0.83mm 8000MHz 0.83mm 4mm
RS-stocknr. 162-6951
FabrikantnummerCD74HC4046AM96
0,191 €
Each (On a Reel of 2500)
Aantal stuks
- - - - Surface Mount 1 - SOIC - 16 9.9 x 3.91 x 1.58mm - 1.58mm 9.9mm
RS-stocknr. 809-6191
FabrikantnummerCD4046BPW
0,371 €
Each (In a Pack of 15)
Aantal stuks
- - - 1.6 MHz, 2.4 MHz Surface Mount 1 0.8 MHz, 1.4 MHz TSSOP 0.1 → 1 μA 16 5.1 x 4.5 x 1.05mm 1.4MHz 1.05mm 5.1mm
RS-stocknr. 709-4807
FabrikantnummerAD5932YRUZ
FabrikantAnalog Devices
9,29 €
Each
Aantal stuks
- - - - Surface Mount - - TSSOP - 16 5 x 4.4 x 1.05mm - 1.05mm 5mm
RS-stocknr. 802-2014
FabrikantnummerNB3N3020DTG
FabrikantON Semiconductor
7,20 €
Each
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. 145-1118
FabrikantnummerCD4046BPW
0,363 €
Each (In a Tube of 90)
Aantal stuks
- - - 1.6 MHz, 2.4 MHz Surface Mount 1 0.8 MHz, 1.4 MHz TSSOP 0.1 → 1 μA 16 5.1 x 4.5 x 1.05mm 1.4MHz 1.05mm 5.1mm
RS-stocknr. 412-933
FabrikantnummerAD9850BRSZ
FabrikantAnalog Devices
23,47 €
Each
Aantal stuks
Digital Synthesizer 125000ksps 10 bit - Surface Mount - - SSOP - 28 10.2 x 5.3 x 1.75mm - 1.75mm 10.2mm
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. 923-6693
FabrikantnummerCD4046BE
0,413 €
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. 807-1798
FabrikantnummerADF4159CCPZ
FabrikantAnalog Devices
13,56 €
Each
Aantal stuks
- - - 2GHz Surface Mount 1 - LFCSP 40 mA 24 4.1 x 4.1 x 0.75mm 13GHz 0.75mm 4.1mm
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