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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Beskrivning Pris 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-artikelnummer 662-3961
Tillv. art.nrCD74HC4046AM96
VarumärkeTexas Instruments
4,33 kr
Each (In a Pack of 10)
Enheter
- - - - Surface Mount 1 - SOIC - 16 9.9 x 3.91 x 1.58mm - 1.58mm 9.9mm
RS-artikelnummer 162-6951
Tillv. art.nrCD74HC4046AM96
VarumärkeTexas Instruments
2,035 kr
Each (On a Reel of 2500)
Enheter
- - - - Surface Mount 1 - SOIC - 16 9.9 x 3.91 x 1.58mm - 1.58mm 9.9mm
RS-artikelnummer 100-0740
Tillv. art.nrCD74HCT297E
VarumärkeTexas Instruments
14,396 kr
Each (In a Tube of 25)
Enheter
- - - - Through Hole 1 - PDIP - 16 19.3 x 6.35 x 4.57mm - 4.57mm 19.3mm
RS-artikelnummer 817-5994
Tillv. art.nrCDCM61004RHBT
VarumärkeTexas Instruments
78,81 kr
1 Tape of 1
Tape(s)
- - - 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-artikelnummer 921-2820
Tillv. art.nrLMH1982SQE/NOPB
VarumärkeTexas Instruments
159,581 kr
Each (On a Reel of 250)
Enheter
- - - 148.5MHz Surface Mount 1 - WQFN 70 mA 32 5 x 5 x 0.8mm 67.5MHz 0.8mm 5mm
RS-artikelnummer 162-8142
Tillv. art.nrCDCM61002RHBT
VarumärkeTexas Instruments
43,424 kr
Each (On a Reel of 250)
Enheter
- - - 683.264MHz Surface Mount 2 43.75MHz VQFN 65 mA 32 5.15 x 5.15 x 0.95mm 28.47MHz 0.95mm 5.15mm
RS-artikelnummer 133-0680
Tillv. art.nrLMX2581SQE/NOPB
VarumärkeTexas Instruments
59,77 kr
Each
Enheter
- - - 3760MHz Surface Mount 4 50MHz WQFN 134 mA 32 5 x 5 x 0.8mm 900MHz 0.8mm 5mm
RS-artikelnummer 761-6438
Tillv. art.nrLMX2485ESQ/NOPB
VarumärkeTexas Instruments
52,04 kr
1 Tape of 1
Tape(s)
- - - 3000MHz Surface Mount 3 50MHz WQFN 5 mA 24 4 x 4 x 0.8mm 110 MHz, 800MHz 0.8mm 4mm
RS-artikelnummer 145-6969
Tillv. art.nrCD74HC7046AM
VarumärkeTexas Instruments
22,376 kr
Each (In a Tube of 40)
Enheter
- - - - Surface Mount 1 - SOIC - 16 9.9 x 3.91 x 1.58mm - 1.58mm 9.9mm
RS-artikelnummer 650-122
Tillv. art.nrCD74HCT7046AE
VarumärkeTexas Instruments
25,70 kr
Each
Enheter
- - - - Through Hole 1 - PDIP - 16 19.3 x 6.35 x 4.57mm - 4.57mm 19.3mm
RS-artikelnummer 662-4605
Tillv. art.nrCDCE706PW
VarumärkeTexas Instruments
87,34 kr
Each
Enheter
- - - - Surface Mount 3 - TSSOP 115 mA 20 6.5 x 4.4 x 1.15mm 200MHz 1.15mm 6.5mm
RS-artikelnummer 817-5537
Tillv. art.nrTRF3765IRHBT
VarumärkeTexas Instruments
133,83 kr
Each
Enheter
- - - 4800MHz Surface Mount - 300MHz VQFN 190 mA 32 5.15 x 5.15 x 0.95mm 350MHz 0.95mm 5.15mm
RS-artikelnummer 162-6986
Tillv. art.nrCDCE706PW
VarumärkeTexas Instruments
75,135 kr
Each (In a Tube of 70)
Enheter
- - - - Surface Mount 3 - TSSOP 115 mA 20 6.5 x 4.4 x 1.15mm 200MHz 1.15mm 6.5mm
RS-artikelnummer 162-8143
Tillv. art.nrCDCM61004RHBT
VarumärkeTexas Instruments
56,264 kr
Each (On a Reel of 250)
Enheter
- - - 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-artikelnummer 709-1965
Tillv. art.nrCD4046BE
VarumärkeTexas Instruments
4,724 kr
Each (In a Pack of 10)
Enheter
- - - - Through Hole 1 - PDIP - 16 19.3 x 6.35 x 4.57mm - 4.57mm 19.3mm
RS-artikelnummer 162-7733
Tillv. art.nrLMK03806BISQE/NOPB
VarumärkeTexas Instruments
69,39 kr
Each (On a Reel of 250)
Enheter
- - - 312.5MHz Surface Mount 1 - WQFN 445 mA 64 9.1 x 9.1 x 0.8mm 500MHz 0.8mm 9.1mm
RS-artikelnummer 809-5927
Tillv. art.nrSN74LV4046AN
VarumärkeTexas Instruments
5,808 kr
Each (In a Pack of 5)
Enheter
- - - 38MHz Through Hole - - PDIP ±70 mA 16 19.69 x 6.6 x 4.57mm - 4.57mm 19.69mm
RS-artikelnummer 709-2508
Tillv. art.nrTLC2932AIPW
VarumärkeTexas Instruments
18,26 kr
Each
Enheter
- - - - Surface Mount 1 - TSSOP - 14 5 x 4.4 x 1.15mm - 1.15mm 5mm
RS-artikelnummer 817-5985
Tillv. art.nrCDCM61002RHBT
VarumärkeTexas Instruments
59,08 kr
Each
Enheter
- - - 683.264MHz Surface Mount 2 43.75MHz VQFN 65 mA 32 5.15 x 5.15 x 0.95mm 28.47MHz 0.95mm 5.15mm
RS-artikelnummer 145-0657
Tillv. art.nrCD74HC4046AE
VarumärkeTexas Instruments
4,794 kr
Each (In a Tube of 25)
Enheter
- - - - Through Hole 1 - PDIP - 16 19.3 x 6.35 x 4.57mm - 4.57mm 19.3mm