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.


...
Read more Read less

Filters

Viewing 61 - 80 of 172 products
Results per page
Description Price 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 Stock No. 809-9364
Mfr. Part No.AD9838BCPZ-RL7
SGD8.84
Each
units
Direct Synthesizer 16Msps 10 bit 16MHz Surface Mount - - LFCSP WD - 20 4.1 x 4.1 x 0.75mm - 0.75mm 4.1mm
RS Stock No. 709-4807
Mfr. Part No.AD5932YRUZ
SGD16.74
Each
units
- - - - Surface Mount - - TSSOP - 16 5 x 4.4 x 1.05mm - 1.05mm 5mm
RS Stock No. 162-9621
Mfr. Part No.P3MS650103H-4CR
SGD1.335
Each (On a Reel of 3000)
units
- - - 60MHz Surface Mount 1 15MHz WDFN 9 mA 4 1 x 1.2 x 0.75mm 60MHz 0.75mm 1mm
RS Stock No. 523-8222
Mfr. Part No.AD9830ASTZ
SGD42.17
Each
units
Digital Synthesizer 50Msps 10 bit - Surface Mount - - LQFP - 48 7 x 7 x 1.4mm - 1.4mm 7mm
RS Stock No. 160-2675
Mfr. Part No.HMC822LP6CE
SGD22.33
Each (On a Reel of 50)
units
- - - 3300MHz Surface Mount 1 2660MHz QFN 56 mA 40 6.1 x 6.1 x 0.9mm 1650MHz 0.9mm 6.1mm
RS Stock No. 169-8383
Mfr. Part No.CS2300-CP-CZZ
SGD7.78
Each (In a Tube of 96)
units
- - - 75MHz Surface Mount 1 6MHz MSOP ±10 mA 10 3 x 3 x 0.95mm 30MHz 0.95mm 3mm
RS Stock No. 921-2820
Mfr. Part No.LMH1982SQE/NOPB
SGD37.371
Each (On a Reel of 250)
units
- - - 148.5MHz Surface Mount 1 - WQFN 70 mA 32 5 x 5 x 0.8mm 67.5MHz 0.8mm 5mm
RS Stock No. 178-9154
Mfr. Part No.CD74HCT4046AM
SGD0.725
Each (In a Tube of 40)
units
- - - - Surface Mount 1 - SOIC - 16 9.9 x 3.91 x 1.58mm - 1.58mm 9.9mm
RS Stock No. 133-0680
Mfr. Part No.LMX2581SQE/NOPB
SGD17.62
Each
units
- - - 3760MHz Surface Mount 4 50MHz WQFN 134 mA 32 5 x 5 x 0.8mm 900MHz 0.8mm 5mm
RS Stock No. 697-7495
Mfr. Part No.AD9910BSVZ
SGD95.48
Each
units
Digital Synthesizer 1000000ksps 14 bit - Surface Mount - - TQFP - 100 14 x 14 x 1mm - 1mm 14mm
RS Stock No. 634-192
Mfr. Part No.CD74HCT297E
SGD3.52
Each
units
- - - - Through Hole 1 - PDIP - 16 19.3 x 6.35 x 4.57mm - 4.57mm 19.3mm
RS Stock No. 809-9705
Mfr. Part No.AD9837ACPZ-RL7
SGD6.39
Each (In a Pack of 2)
units
Direct Synthesizer 16Msps 10 bit 5MHz Surface Mount - - LFCSP WD - 10 3.1 x 3.1 x 0.8mm - 0.8mm 3.1mm
RS Stock No. 708-9827
Mfr. Part No.ADN2814ACPZ
SGD34.26
Each
units
- - - - Surface Mount 1 - LFCSP 145 mA 32 5 x 5 x 0.83mm 160MHz 0.83mm 5mm
RS Stock No. 100-0740
Mfr. Part No.CD74HCT297E
SGD4.56
Each (In a Tube of 25)
units
- - - - Through Hole 1 - PDIP - 16 19.3 x 6.35 x 4.57mm - 4.57mm 19.3mm
RS Stock No. 912-6319
Mfr. Part No.AD9910BSVZ
SGD81.682
Each (In a Tray of 90)
units
Digital Synthesizer 1000000ksps 14 bit - Surface Mount - - TQFP - 100 14 x 14 x 1mm - 1mm 14mm
RS Stock No. 192-1207
Mfr. Part No.DS1086Z+
SGD2.997
Each (In a Tube of 100)
units
- - - 133MHz Surface Mount 1 0MHz SOIC 35 mA 8 5 x 4 x 1.5mm 133MHz 1.5mm 5mm
RS Stock No. 161-2864
Mfr. Part No.Si52208-A01AGM
SGD6.19
Each (In a Pack of 2)
units
- - - 100MHz Surface Mount 4 - QFN 63 mA 48 6 x 6 x 0.85mm 25MHz 0.85mm 6mm
RS Stock No. 162-8143
Mfr. Part No.CDCM61004RHBT
SGD9.04
Each (On a Reel of 250)
units
- - - 683.264MHz Surface Mount 4 43.75MHz VQFN 65 mA 32 5.15 x 5.15 x 0.95mm 28.47MHz 0.95mm 5.15mm
RS Stock No. 538-6179
Mfr. Part No.ADF4360-1BCPZ
SGD10.69
Each
units
- - - 2450MHz Surface Mount 1 2050MHz CP 24 - 24 4 x 4 x 0.83mm 250MHz 0.83mm 4mm
RS Stock No. 697-7568
Mfr. Part No.ADF4360-7BCPZ
SGD10.69
Each
units
- - - 1800MHz Surface Mount 1 350MHz CP 24 - 24 4 x 4 x 0.83mm 250MHz 0.83mm 4mm