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. 538-5930
FabrikantnummerAD9954YSVZ
FabrikantAnalog Devices
32,18 €
Each
Aantal stuks
Digital Synthesizer 400Msps 14 bit - Surface Mount - - TQFP - 48 7 x 7 x 1mm - 1mm 7mm
RS-stocknr. 697-7476
FabrikantnummerAD9852ASVZ
FabrikantAnalog Devices
42,65 €
Each
Aantal stuks
Direct Digital Synthesizer 300Msps 12 bit - Surface Mount - - TQFP - 80 14 x 14 x 1mm - 1mm 14mm
RS-stocknr. 145-2977
FabrikantnummerMC14046BDWG
FabrikantON Semiconductor
0,59 €
Each (In a Tube of 47)
Aantal stuks
- - - 0.7MHz Surface Mount - 0.5MHz SOIC ±1 μA 16 10.45 x 7.6 x 2.4mm - 2.4mm 10.45mm
RS-stocknr. 807-1788
FabrikantnummerADF4153ABRUZ
FabrikantAnalog Devices
4,56 €
Each (In a Pack of 2)
Aantal stuks
- - - 4000MHz Surface Mount - - TSSOP 100 μA 16 5.1 x 4.5 x 1.05mm 250MHz 1.05mm 5.1mm
RS-stocknr. 412-715
FabrikantnummerADF4153BRUZ
FabrikantAnalog Devices
5,06 €
Each
Aantal stuks
- - - - Surface Mount 1 - CP 20 24 mA 16 5 x 4.4 x 1.05mm 4000MHz 1.05mm 5mm
RS-stocknr. 697-7495
FabrikantnummerAD9910BSVZ
FabrikantAnalog Devices
53,05 €
Each
Aantal stuks
Digital Synthesizer 1000000ksps 14 bit - Surface Mount - - TQFP - 100 14 x 14 x 1mm - 1mm 14mm
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
RS-stocknr. 161-2883
FabrikantnummerSi5332C-C-GM1
FabrikantSilicon Labs
5,45 €
Each
Aantal stuks
- - - 312.5MHz Surface Mount 7 5MHz QFN 70 mA 32 5 x 5 x 0.85mm 50 MHz, 170 MHz, 250MHz 0.85mm 5mm
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. 496-7812
FabrikantnummerAD9951YSVZ
FabrikantAnalog Devices
24,35 €
Each
Aantal stuks
Digital Synthesizer 400Msps 14 bit - Surface Mount - - TQFP - 48 7 x 7 x 1mm - 1mm 7mm
RS-stocknr. 708-9782
FabrikantnummerADF4360-9BCPZ
FabrikantAnalog Devices
6,29 €
Each
Aantal stuks
- - - 400MHz Surface Mount 1 1.1MHz CP 24 2 5 mA 24 4 x 4 x 0.83mm 250MHz 0.83mm 4mm
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. 716-5804
FabrikantnummerCS2300-CP-CZZ
FabrikantCirrus Logic
5,22 €
Each
Aantal stuks
- - - 75MHz Surface Mount 1 6MHz MSOP ±10 mA 10 3 x 3 x 0.95mm 30MHz 0.95mm 3mm
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. 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. 862-6237
FabrikantnummerHMC832LP6GE
FabrikantAnalog Devices
17,29 €
Each
Aantal stuks
- - - 3000MHz Surface Mount 1 25MHz SMD 237 mA 40 6.1 x 6.1 x 0.9mm 3000MHz 0.9mm 6.1mm
RS-stocknr. 922-2243
FabrikantnummerLMX2485ESQ/NOPB
2,635 €
Each (On a Reel of 1000)
Aantal stuks
- - - 3000MHz Surface Mount 3 50MHz LLP 5 mA 24 4 x 4 x 0.8mm 110 MHz, 800MHz 0.8mm 4mm
RS-stocknr. 759-2749
FabrikantnummerADF4350BCPZ
FabrikantAnalog Devices
10,99 €
Each
Aantal stuks
- - - 4400MHz Surface Mount 2 137.5MHz LFCSP VQ 110 mA 32 5 x 5 x 1mm 4400MHz 1mm 5mm
RS-stocknr. 496-9947
FabrikantnummerAD9834BRUZ
FabrikantAnalog Devices
9,57 €
Each
Aantal stuks
Digital Synthesizer 75Msps 10 bit - Surface Mount - - TSSOP - 20 6.5 x 4.4 x 1.05mm - 1.05mm 6.5mm
RS-stocknr. 192-1207
FabrikantnummerDS1086Z+
FabrikantMaxim Integrated
1,49 €
Each (In a Tube of 100)
Aantal stuks
- - - 133MHz Surface Mount 1 0MHz SOIC 35 mA 8 5 x 4 x 1.5mm 133MHz 1.5mm 5mm