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    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.

    120 Produkter som visas för Clock Synthesizers

    • RS-artikelnummer 797-9304P
    • Tillv. art.nr DS1090U-2/V+
    Varje (levereras i ett rör)
    12,376 kr
    Maxim Integrated
    -
    -
    -
    8MHz
    Surface Mount
    1
    0.125MHz
    μSOP
    3 mA
    8
    3.1 x 3.1 x 0.95mm
    8MHz
    0.95mm
    3.1mm
    5.5 V
    +85 °C
    3 V
    -40 °C
    • RS-artikelnummer 802-2077P
    • Tillv. art.nr NBC12439AMNG
    Varje (levereras i ett rör)
    138,85 kr
    onsemi
    -
    -
    -
    800MHz
    Surface Mount
    1
    400MHz
    QFN
    85 mA
    32
    5 x 5 x 0.95mm
    20MHz
    0.95mm
    5mm
    5.25 V
    +85 °C
    3.135 V
    -40 °C
    • RS-artikelnummer 662-4586P
    • Tillv. art.nr CD74HC7046AM
    Varje (levereras i ett rör)
    29,882 kr
    Texas Instruments
    -
    -
    -
    -
    Surface Mount
    1
    -
    SOIC
    -
    16
    9.9 x 3.91 x 1.58mm
    -
    1.58mm
    9.9mm
    6 V
    +125 °C
    2 V
    -55 °C
    • RS-artikelnummer 241-2964P
    • Tillv. art.nr AB-557-03-HCHC-F-L-C-T
    Varje (levereras i en rulle)
    58,945 kr
    Abracon
    -
    -
    -
    460MHz
    Surface Mount
    1
    -
    TSSOP-16
    -
    14
    -
    -
    -
    -
    3.6 V
    -
    -
    -
    • RS-artikelnummer 230-6592P
    • Tillv. art.nr RC22504A000GNK#BB0
    Varje (levereras i en bricka)
    135,30 kr
    Renesas Electronics
    -
    20Gsps
    -
    180MHz
    Surface Mount
    6
    -
    24-QFN
    -
    24
    -
    -
    -
    -
    -
    -
    -
    -
    • RS-artikelnummer 230-6594P
    • Tillv. art.nr RC32504A000GNK#BB0
    Varje (levereras i en bricka)
    161,73 kr
    Renesas Electronics
    -
    20Gsps
    -
    180MHz
    Surface Mount
    8
    -
    24-QFN
    -
    24
    -
    -
    -
    -
    -
    -
    -
    -
    • RS-artikelnummer 716-5804P
    • Tillv. art.nr CS2300-CP-CZZ
    Varje (levereras i ett rör)
    111,68 kr
    Cirrus Logic
    -
    -
    -
    75MHz
    Surface Mount
    1
    6MHz
    MSOP
    ±10 mA
    10
    3 x 3 x 0.95mm
    30MHz
    0.95mm
    3mm
    3.5 V
    +70 °C
    3.1 V
    -10 °C
    • RS-artikelnummer 662-4611P
    • Tillv. art.nr CDCF5801ADBQ
    Varje (levereras i ett rör)
    53,60 kr
    Texas Instruments
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS-artikelnummer 802-2077
    • Tillv. art.nr NBC12439AMNG
    Varje
    138,85 kr
    onsemi
    -
    -
    -
    800MHz
    Surface Mount
    1
    400MHz
    QFN
    85 mA
    32
    5 x 5 x 0.95mm
    20MHz
    0.95mm
    5mm
    5.25 V
    +85 °C
    3.135 V
    -40 °C
    • RS-artikelnummer 250-3490P
    • Tillv. art.nr 9FG104EGILF
    Varje (levereras i ett rör)
    60,48 kr
    Renesas Electronics
    -
    -
    -
    25MHz
    Surface Mount
    -
    -
    TSSOP
    -
    28
    -
    -
    -
    -
    4.6 V
    -
    -
    -
    • RS-artikelnummer 145-6969
    • Tillv. art.nr CD74HC7046AM
    Var (i ett rör med 40)
    27,72 kr
    Texas Instruments
    -
    -
    -
    -
    Surface Mount
    1
    -
    SOIC
    -
    16
    9.9 x 3.91 x 1.58mm
    -
    1.58mm
    9.9mm
    6 V
    +125 °C
    2 V
    -55 °C
    • RS-artikelnummer 662-4589P
    • Tillv. art.nr CD74HC4046AE
    Varje (levereras i ett rör)
    10,539 kr
    Texas Instruments
    -
    -
    -
    -
    Through Hole
    1
    -
    PDIP
    -
    16
    19.3 x 6.35 x 4.57mm
    -
    4.57mm
    19.3mm
    6 V
    +125 °C
    2 V
    -55 °C
    Varje (levereras i en bricka)
    111,78 kr
    Renesas Electronics
    Direct Synthesizer
    -
    16 bit
    4400MHz
    Surface Mount
    -
    -
    32-lead VFQFN, Lead-free
    -
    32
    -
    -
    -
    -
    3.63 V
    -
    -
    -
    • RS-artikelnummer 216-6267P
    • Tillv. art.nr 9FG104EGILFT
    Varje (levereras i en rulle)
    48,385 kr
    Renesas Electronics
    -
    -
    -
    -
    -
    -
    -
    TSSOP
    109 mA
    28
    -
    400MHz
    -
    -
    -
    -
    -
    -
    • RS-artikelnummer 262-9026P
    • Tillv. art.nr 9FGV0641AKLF
    Varje (levereras i en bricka)
    38,19 kr
    Renesas Electronics
    -
    -
    -
    -
    -
    -
    -
    VFQFPN
    -
    40
    -
    -
    -
    -
    -
    -
    -
    -
    • RS-artikelnummer 817-5994P
    • Tillv. art.nr CDCM61004RHBT
    Varje (levereras i en rulle)
    99,46 kr
    Texas Instruments
    -
    -
    -
    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
    3.6 V
    +85 °C
    3 V
    -40 °C
    • RS-artikelnummer 817-5994
    • Tillv. art.nr CDCM61004RHBT
    1 tejp med 1
    99,46 kr
    Texas Instruments
    -
    -
    -
    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
    3.6 V
    +85 °C
    3 V
    -40 °C
    • RS-artikelnummer 264-1313P
    • Tillv. art.nr 9FGP204BKLF
    Varje (levereras i en bricka)
    34,22 kr
    Renesas Electronics
    -
    -
    -
    -
    Surface Mount
    -
    -
    MLF
    -
    40
    -
    -
    -
    -
    3.3 V
    -
    -
    -
    • RS-artikelnummer 250-3492P
    • Tillv. art.nr 9FG108EFILF
    Varje (levereras i ett rör)
    74,19 kr
    Renesas Electronics
    -
    -
    -
    25MHz
    Surface Mount
    -
    -
    SSOP
    -
    48
    -
    -
    -
    -
    4.6 V
    -
    -
    -
    • RS-artikelnummer 262-9024P
    • Tillv. art.nr 9FGV0441AKILF
    Varje (levereras i en bricka)
    41,035 kr
    Renesas Electronics
    -
    -
    -
    -
    -
    -
    -
    VFQFPN
    -
    32
    -
    -
    -
    -
    -
    -
    -
    -
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