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. 145-0657
FabrikantnummerCD74HC4046AE
€ 0,45
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. 170-3521
FabrikantnummerNB3N5573DTG
FabrikantON Semiconductor
€ 3,419
Each (In a Tube of 96)
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. 811-5787
FabrikantnummerLMK03806BISQE/NOPB
€ 6,90
Each
Aantal stuks
- - - 312.5MHz Surface Mount 1 - WQFN 445 mA 64 9.1 x 9.1 x 0.8mm 500MHz 0.8mm 9.1mm
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. 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. 809-9364
FabrikantnummerAD9838BCPZ-RL7
FabrikantAnalog Devices
€ 5,22
Each
Aantal stuks
Direct Synthesizer 16Msps 10 bit 16MHz Surface Mount - - LFCSP WD - 20 4.1 x 4.1 x 0.75mm - 0.75mm 4.1mm
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. 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. 909-3468
FabrikantnummerHMC703LP4E
FabrikantAnalog Devices
€ 24,29
Each
Aantal stuks
- - - - Surface Mount 1 - QFN 95 mA 24 4.1 x 4.1 x 0.95mm 8000MHz 0.95mm 4.1mm
RS-stocknr. 161-2872
FabrikantnummerSi5332A-C-GM2
FabrikantSilicon Labs
€ 10,35
Each
Aantal stuks
- - - 312.5MHz Surface Mount 10 5MHz QFN 70 mA 40 6 x 6 x 0.85mm 50 MHz, 170 MHz, 250MHz 0.85mm 6mm
RS-stocknr. 183-2180
FabrikantnummerAD9833BRMZ
FabrikantAnalog Devices
€ 8,38
Each
Aantal stuks
Direct Digital Synthesizer 25Msps 10 bit 12.5MHz Surface Mount - - MSOP - 10 3.1 x 3.1 x 0.95mm - 0.95mm 3.1mm
RS-stocknr. 709-0050
FabrikantnummerAD9852ASTZ
FabrikantAnalog Devices
€ 36,42
Each
Aantal stuks
Direct Digital Synthesizer 300Msps 12 bit - Surface Mount - - LQFP - 80 14 x 14 x 1.4mm - 1.4mm 14mm
RS-stocknr. 108-353
FabrikantnummerADF4252BCPZ
FabrikantAnalog Devices
€ 2,98
Each
Aantal stuks
- - - - Surface Mount 2 - CP 24 16 mA 24 4 x 4 x 0.83mm 3000MHz 0.83mm 4mm
RS-stocknr. 145-4049
FabrikantnummerNB3N51032DTG
FabrikantON Semiconductor
€ 2,853
Each (In a Tube of 96)
Aantal stuks
- - - 200MHz Surface Mount 2 25MHz TSSOP 100 mA 16 5.1 x 4.5 x 1.05mm 25MHz 1.05mm 5.1mm
RS-stocknr. 827-0673
FabrikantnummerNB3N51032DTG
FabrikantON Semiconductor
€ 3,35
Each (In a Pack of 2)
Aantal stuks
- - - 200MHz Surface Mount 2 25MHz TSSOP 100 mA 16 5.1 x 4.5 x 1.05mm 25MHz 1.05mm 5.1mm
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. 660-0520
FabrikantnummerPLL1705DBQ
€ 4,42
Each
Aantal stuks
- - - - Surface Mount 2 - SSOP 25 mA 20 8.74 x 3.99 x 1.5mm 27MHz 1.5mm 8.74mm
RS-stocknr. 103-5689
Fabrikantnummer74HCT9046AD,112
FabrikantNexperia
€ 1,886
Each (In a Tube of 50)
Aantal stuks
- - - - Surface Mount 1 - SOIC - 16 10 x 4 x 1.45mm - 1.45mm 10mm
RS-stocknr. 709-5143
FabrikantnummerADF4156BRUZ
FabrikantAnalog Devices
€ 5,52
Each
Aantal stuks
- - - - Surface Mount 1 - CP 20 1 32 mA 16 5 x 4.4 x 1.05mm 6000MHz 1.05mm 5mm
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