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. 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. 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. 708-9934
FabrikantnummerAD9854ASTZ
FabrikantAnalog Devices
35,15 €
Each
Aantal stuks
Digital Synthesizer 200Msps 12 bit - Surface Mount - - LQFP - 80 14 x 14 x 1.4mm - 1.4mm 14mm
RS-stocknr. 161-2879
FabrikantnummerSi5332B-C-GM2
FabrikantSilicon Labs
6,55 €
Each
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. 806-3179
FabrikantnummerMC14046BDWG
FabrikantON Semiconductor
0,59 €
Each (In a Pack of 20)
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. 662-4586
FabrikantnummerCD74HC7046AM
2,486 €
Each (In a Pack of 5)
Aantal stuks
- - - - Surface Mount 1 - SOIC - 16 9.9 x 3.91 x 1.58mm - 1.58mm 9.9mm
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. 183-2473
FabrikantnummerHMC834LP6GE
FabrikantAnalog Devices
17,29 €
Each
Aantal stuks
- - - 8400MHz Surface Mount 1 45MHz SMT 8 mA 40 6.1 x 6.1 x 0.85mm 4200MHz 0.85mm 6.1mm
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. 161-2870
FabrikantnummerSi5332A-C-GM1
FabrikantSilicon Labs
9,72 €
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. 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. 163-2552
FabrikantnummerNB3N2302DG
FabrikantON Semiconductor
1,809 €
Each (In a Tube of 98)
Aantal stuks
- - - 133MHz Surface Mount 2 10MHz SOIC 50 mA 8 5 x 4 x 1.5mm 133MHz 1.5mm 5mm
RS-stocknr. 660-7755
FabrikantnummerPLL1708DBQ
2,10 €
Each
Aantal stuks
- - - - Surface Mount 2 - SSOP 25 mA 20 8.75 x 4 x 1.5mm 27.27MHz 1.5mm 8.75mm
RS-stocknr. 178-6978
Fabrikantnummer74HCT4046AD,112
FabrikantNexperia
0,577 €
Each (In a Tube of 50)
Aantal stuks
- - - - Surface Mount 1 - SOIC 50 mA 16 10 x 4 x 1.45mm - 1.45mm 10mm
RS-stocknr. 809-9705
FabrikantnummerAD9837ACPZ-RL7
FabrikantAnalog Devices
3,77 €
Each (In a Pack of 2)
Aantal stuks
Direct Synthesizer 16Msps 10 bit 5MHz Surface Mount - - LFCSP WD - 10 3.1 x 3.1 x 0.8mm - 0.8mm 3.1mm
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
RS-stocknr. 100-0740
FabrikantnummerCD74HCT297E
1,404 €
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. 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. 161-2842
FabrikantnummerSi5332A-C-GM1
FabrikantSilicon Labs
8,946 €
Each (In a Tray of 490)
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. 160-2676
FabrikantnummerHMC832LP6GE
FabrikantAnalog Devices
14,811 €
Each (On a Reel of 50)
Aantal stuks
- - - 3000MHz Surface Mount 1 25MHz SMD 237 mA 40 6.1 x 6.1 x 0.9mm 3000MHz 0.9mm 6.1mm