What are Clock Generators, PLLs, Frequency Synthesizers ?
Clock Generators, PLLs, Frequency Synthesizers are integrated circuits that generate clock signals to synchronize operations in electronic devices. They are commonly used in applications like wireless communication, RF signal processing, and electronic assembly. Important specifications for selection include Frequency, which determines the operational speed; Input, which affects compatibility with existing systems; and Output, which ensures proper signal integrity. Sourcing teams should validate lifecycle status and consider alternate-source options to mitigate supply chain risks.
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| Part & Mfr | Differential | Divider | Frequency | Input | Mounting Type | Number of Circuits | Operating Temperature | Output | PLL | Ratio | Supplier Device Package | Type | Voltage | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Analog Devices / Maxim Integrated
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Texas Instruments
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Yes/Yes | Yes/No | 2.16GHz | LVCMOS, LVDS, LVPECL | Surface Mount | 1 | -40°C ~ 85°C | LVDS, LVPECL | No | 1:8 | 48-WQFN (7x7) | Clock Conditioner | 3.15V ~ 3.45V | |
Hittite Microwave
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No/Yes | Yes/No | 4.2GHz | Clock | Surface Mount | 1 | -40°C ~ 85°C | Clock | Yes | 1:2 | 40-SMT (6x6) | - | 3V ~ 5.2V | |
Aurasemi
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Yes/Yes | Yes/No | 2.94912GHz | CML, Crystal, HCSL, LVCMOS, LVDS, LVPECL | Surface Mount | 4 | -40°C ~ 85°C (TA) | CML, HCSL, LVCMOS, LVDS, LVPECL | Yes | - | 72-QFN (10x10) | Jitter Attenuator, Network Synchronizer | 1.71V ~ 1.89V, 2.375V ~ 2.625V, 2.97V ~ 3.63V | |
Hittite Microwave
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No/Yes | Yes/No | 350MHz | Clock | Surface Mount | 1 | -40°C ~ 85°C | Clock | Yes | 1:2 | 40-SMT (6x6) | - | 3V ~ 5.2V | |
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Diodes Incorporated
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- | - | - | - | - | - | - | - | - | - | - | - | - | |
Texas Instruments
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Yes/Yes | Yes/No | 1.57GHz | LVCMOS, LVDS, LVPECL | Surface Mount | 1 | -40°C ~ 85°C | LVDS, LVPECL | No | 1:8 | 48-WQFN (7x7) | Clock Conditioner | 3.15V ~ 3.45V | |
Renesas
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No/Yes | Yes/No | 500MHz | Crystal | Surface Mount | 1 | -40°C ~ 85°C | LVPECL | Yes with Bypass | 1:2 | 32-TQFP (7x7) | Frequency Synthesizer | 3.135V ~ 3.465V | |
Cypress Semiconductor
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No/No | Yes/No | 155MHz | Clock | Surface Mount | 1 | 0°C ~ 70°C | Clock | Yes with Bypass | 1:3 | 16-TSSOP | Clock/Frequency Synthesizer, Clock Generator, Fanout Distribution, Jitter Attenuator | 3.15V ~ 3.45V | |
Texas Instruments
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Yes/Yes | Yes/No | 2.16GHz | LVCMOS, LVDS, LVPECL | Surface Mount | 1 | -40°C ~ 85°C | LVDS, LVPECL | No | 1:8 | 48-WQFN (7x7) | Clock Conditioner | 3.15V ~ 3.45V | |
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Diodes Incorporated
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- | - | - | - | - | - | - | - | - | - | - | - | - | |
Renesas
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No/Yes | Yes/No | 780MHz | Crystal | Surface Mount | 1 | -40°C ~ 85°C | LVPECL | Yes with Bypass | 1:2 | 32-TQFP (7x7) | Frequency Synthesizer | 3.135V ~ 3.465V | |
Hittite Microwave
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Yes/No | Yes/No | 8GHz | Clock | Surface Mount | 1 | -40°C ~ 85°C | Clock | Yes | 3:1 | 40-SMT (6x6) | Integer-N/Fractional-N | 3V ~ 5.5V | |
Renesas
|
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No/Yes | Yes/No | 226.66MHz | LVCMOS, LVTTL, Crystal | Surface Mount | 1 | -40°C ~ 85°C | LVDS | Yes with Bypass | 2:4 | 32-VFQFPN (5x5) | Frequency Synthesizer | 2.375V ~ 3.465V | |
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Cypress Semiconductor
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No/No | Yes/Yes | 200MHz | LVCMOS, LVTTL | Surface Mount | 1 | -40°C ~ 85°C | LVTTL | Yes | 1:8 | 44-TQFP (10x10) | Clock Buffer, Fanout Distribution | 2.25V ~ 3.6V | |
Texas Instruments
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- | - | - | - | Surface Mount | - | - | - | - | - | 144-NFBGA (10x10) | Jitter Cleaner | - | |
Renesas
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No/Yes | Yes/No | 161.13MHz | Crystal | Surface Mount | 1 | 0°C ~ 70°C | LVPECL | Yes | 1:1 | 8-TSSOP | Clock/Frequency Synthesizer, Clock Generator | 3.135V ~ 3.465V | |
Cypress Semiconductor
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Cypress Semiconductor
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Texas Instruments
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Yes/Yes | Yes/No | 200MHz, 1GHz, 3GHz | HCSL, LVCMOS, LVDS, LVPECL, Crystal | Surface Mount | 1 | -40°C ~ 85°C | CML, LVCMOS, LVDS, LVPECL | Yes | 3:16 | 64-VQFN (9x9) | Clock Generator, Clock Synchronizer, Jitter Attenuator | 3.135V ~ 3.465V | |
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Texas Instruments
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Yes/Yes | Yes/No | 1.25GHz | HCSL, LVCMOS, LVDS, LVPECL | Surface Mount | 1 | -40°C ~ 85°C | CML, LVCMOS, LVDS, LVPECL | Yes | 2:16 | 64-VQFN (9x9) | Clock Synchronizer and Jitter Cleaner | 3.135V ~ 3.465V | |
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Texas Instruments
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Yes/Yes | Yes/No | 25MHz, 200MHz, 400MHz, 1.25GHz | HCSL, LVCMOS, LVDS, LVPECL, Crystal | Surface Mount | 1 | -40°C ~ 85°C | CML, LVCMOS, LVDS, LVPECL | Yes | 4:14 | 64-VQFN (9x9) | Clock Synchronizer and Jitter Cleaner | 3.135V ~ 3.465V | |
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Texas Instruments
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Yes/Yes | Yes/No | 1.25GHz | HCSL, LVCMOS, LVDS, LVPECL | Surface Mount | 1 | -40°C ~ 85°C | CML, LVCMOS, LVDS, LVPECL | Yes | 2:16 | 64-VQFN (9x9) | Clock Synchronizer and Jitter Cleaner | 3.135V ~ 3.465V | |
Texas Instruments
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No/No | No/No | - | - | Surface Mount | 1 | -55°C ~ 125°C (TA) | - | No | 1:8 | 14-CFP | Clock Driver | 2V ~ 6V | |
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Texas Instruments
|
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Yes/Yes | Yes/No | 25MHz, 200MHz, 400MHz, 1.25GHz | HCSL, LVCMOS, LVDS, LVPECL, Crystal | Surface Mount | 1 | -40°C ~ 85°C | CML, LVCMOS, LVDS, LVPECL | Yes | 4:14 | 64-VQFN (9x9) | Clock Synchronizer and Jitter Cleaner | 3.135V ~ 3.465V | |
Renesas
|
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No/Yes | Yes/No | 156.5MHz | LVCMOS, LVTTL, Crystal | Surface Mount | 1 | -40°C ~ 85°C | LVDS | Yes with Bypass | 2:4 | 24-TSSOP | Frequency Synthesizer | 2.375V ~ 3.465V | |
Harris Semiconductor
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Hittite Microwave
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Yes/Yes | Yes/No | 1.3GHz | Clock | Surface Mount | 1 | -40°C ~ 85°C | Clock | No | 1:1 | 32-QFN (5x5) | - | 4.75V ~ 5.25V | |
Hittite Microwave
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Yes/No | Yes/No | 15.4GHz | Clock | Surface Mount | 1 | -40°C ~ 85°C | Clock | Yes | 1:1 | 24-QFN (4x4) | - | 4.75V ~ 12.5V | |
Adsantec
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Yes/Yes | No/Yes | 35GHz | CML | Surface Mount | 1 | -25°C ~ 85°C | CML | No | 1:1 | 24-CQFN | Frequency Doubler | 3.1V ~ 3.5V | |
Adsantec
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Yes/Yes | No/Yes | 35GHz | CML | Surface Mount | 1 | -40°C ~ 125°C (TJ) | CML | No | 1:1 | 24-CQFP (8x8) | Frequency Doubler | 3.1V ~ 3.5V | |
Adsantec
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Yes/Yes | Yes/Yes | 32.1GHz | CML, LVDS | Surface Mount | 1 | -25°C ~ 85°C | CML, LVDS | Yes | 1:1 | 24-CQFN | PLL Clock Multiplier | 3.1V ~ 3.5V | |
Adsantec
|
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Yes/Yes | Yes/Yes | 32.1GHz | CML, LVDS | Surface Mount | 1 | -55°C ~ 125°C (TJ) | CML, LVDS | Yes | 1:1 | 24-CQFP (8x8) | Clock Multiplier | 2.66V ~ 2.94V, 3.135V ~ 3.465V | |
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Integrated Device Technology
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- | - | - | - | - | - | - | - | - | - | - | - | - | |
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Texas Instruments
|
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Yes/Yes | Yes/Yes | 3.255GHz | Clock | Surface Mount | 2 | -55°C ~ 125°C (TA) | CML, HSDS, LCPECL, LVCMOS, LVDS, LVPECL | Yes | 6:14 | 64-CFP | Jitter Cleaner | 3.13V ~ 3.45V | |
Analog Devices / Maxim Integrated
|
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No/Yes | Yes/No | 870MHz | Clock | Surface Mount | 1 | -40°C ~ 85°C | Clock | Yes | 1:1 | 40-SMT (6x6) | - | 3V ~ 5.2V | |
Renesas
|
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No/No | Yes/No | 200MHz | Clock, Crystal | Surface Mount | 1 | -40°C ~ 85°C | CMOS | Yes | 1:1 | 8-SOIC | Clock/Frequency Synthesizer, Spread Spectrum Clock Generator | 3.15V ~ 3.45V | |
Infineon Technologies
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- | - | - | - | Surface Mount | - | - | - | - | - | 8-TSSOP | - | - | |
Renesas
|
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Yes/Yes | Yes/No | 1GHz | HCSL, LVCMOS, LVDS, LVHSTL, LVPECL, Crystal | Surface Mount | 1 | -40°C ~ 85°C | HCSL, LVCMOS, LVDS, LVPECL | Yes with Bypass | 3:8 | 56-VFQFPN (8x8) | Jitter Attenuator | 2.375V ~ 3.465V | |
Renesas
|
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Yes/Yes | Yes/No | 350MHz | HCSL, LVCMOS, LVDS, LVPECL, Crystal | Surface Mount | 1 | -40°C ~ 105°C | HCSL, LVCMOS, LVDS, LVPECL | Yes | 2:4 | 24-QFN (4x4) | Clock Generator | 1.71V ~ 3.465V | |
Renesas
|
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- | - | - | - | - | - | - | - | - | - | - | - | - | |
Nexperia USA Inc.
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No/No | No/No | 21MHz | Clock | Surface Mount | 1 | -40°C ~ 125°C | Clock | Yes | 2:3 | 16-SSOP | Phase Lock Loop (PLL) | 3V ~ 6V | |
Nexperia USA Inc.
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No/No | No/No | 21MHz | Clock | Surface Mount | 1 | -40°C ~ 125°C | Clock | Yes | 2:3 | 16-SSOP | Phase Lock Loop (PLL) | 3V ~ 6V | |
NXP Semiconductors
|
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No/No | No/No | 21MHz | Clock | Surface Mount | 1 | -40°C ~ 125°C | Clock | Yes | 2:3 | 16-SO | Phase Lock Loop (PLL) | 3V ~ 6V | |
NXP Semiconductors
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No/No | No/No | 21MHz | Clock | Surface Mount | 1 | -40°C ~ 125°C | Clock | Yes | 2:3 | 16-SO | Phase Lock Loop (PLL) | 3V ~ 6V | |
Nexperia USA Inc.
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No/No | No/No | 19MHz | Clock | Surface Mount | 1 | -40°C ~ 125°C | Clock | Yes | 2:2 | 16-TSSOP | Phase Lock Loop (PLL) | 4.5V ~ 5.5V | |
Nexperia USA Inc.
|
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No/No | No/No | 19MHz | Clock | Surface Mount | 1 | -40°C ~ 125°C | Clock | Yes | 2:2 | 16-TSSOP | Phase Lock Loop (PLL) | 4.5V ~ 5.5V | |
NXP Semiconductors
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No/No | No/No | 21MHz | Clock | Surface Mount | 1 | -40°C ~ 125°C | Clock | Yes | 2:3 | 16-SO | Phase Lock Loop (PLL) | 4.5V ~ 5.5V | |
NXP Semiconductors
|
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No/No | No/No | 21MHz | Clock | Surface Mount | 1 | -40°C ~ 125°C | Clock | Yes | 2:3 | 16-SO | Phase Lock Loop (PLL) | 4.5V ~ 5.5V | |
NXP Semiconductors
|
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No/No | No/No | 19MHz | Clock | Through Hole | 1 | -40°C ~ 125°C | Clock | Yes | 2:2 | 16-DIP | Phase Lock Loop (PLL) | 4.5V ~ 5.5V |
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