CDC421A106 Series

106.25-MHz fully integrated fixed frequency low-jitter crystal oscillator clock generator

Catalog

106.25-MHz fully integrated fixed frequency low-jitter crystal oscillator clock generator

Part	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply [Max]	Voltage - Supply [Min]	Divider/Multiplier	Mounting Type	Input	Number of Circuits	Differential - Input:Output	PLL	Frequency - Max [Max]	Type	Ratio - Input:Output [custom]	Package / Case	Output	Supplier Device Package
Texas Instruments CDC421A106RGER	85 °C	-40 °C	3.6 V	3 V	Yes/No	Surface Mount	Crystal LVCMOS	1	No/Yes		106.25 MHz	Clock Generator	1:1	24-VFQFN Exposed Pad	LVPECL	24-VQFN (4x4)
Texas Instruments CDC421A106RGET	85 °C	-40 °C	3.6 V	3 V	Yes/No	Surface Mount	Crystal LVCMOS	1	No/Yes		106.25 MHz	Clock Generator	1:1	24-VFQFN Exposed Pad	LVPECL	24-VQFN (4x4)

Catalog

106.25-MHz fully integrated fixed frequency low-jitter crystal oscillator clock generator

Key Features

• Single 3.3-V SupplyHigh-Performance Clock Generator, Incorporating Crystal Oscillator Circuitry with Integrated Frequency SynthesizerLow Output Jitter: As low as 380 fs (RMS integrated between 10 kHz to 20 MHz)Low Phase Noise at 312.5 MHz:Less than -120 dBc/Hz at 10 kHz and -147 dBc/Hz at 10-MHz offset from carrierSupports Crystal or LVCMOS Input Frequencies at 31.25 MHz, 33.33 MHz, and 35.42 MHzOutput Frequencies: 100 MHz, 106.25 MHz, 125 MHz, 156.25 MHz, 212.5 MHz, 250 MHz, and 312.5 MHzDifferential Low-Voltage Positive Emitter Coupled Logic (LVPECL) OutputsFully-Integrated Voltage-Controlled Oscillator (VCO): Runs from 1.75 GHz to 2.35 GHzTypical Power Consumption: 300 mWChip Enable Control PinAvailable in 4-mm × 4-mm QFN-24 PackageESD Protection Exceeds 2 kV (HBM)Industrial Temperature Range: -40°C to +85°CAPPLICATIONSLow-Cost, Low-Jitter Frequency MultiplierAll trademarks are the property of their respective owners.Single 3.3-V SupplyHigh-Performance Clock Generator, Incorporating Crystal Oscillator Circuitry with Integrated Frequency SynthesizerLow Output Jitter: As low as 380 fs (RMS integrated between 10 kHz to 20 MHz)Low Phase Noise at 312.5 MHz:Less than -120 dBc/Hz at 10 kHz and -147 dBc/Hz at 10-MHz offset from carrierSupports Crystal or LVCMOS Input Frequencies at 31.25 MHz, 33.33 MHz, and 35.42 MHzOutput Frequencies: 100 MHz, 106.25 MHz, 125 MHz, 156.25 MHz, 212.5 MHz, 250 MHz, and 312.5 MHzDifferential Low-Voltage Positive Emitter Coupled Logic (LVPECL) OutputsFully-Integrated Voltage-Controlled Oscillator (VCO): Runs from 1.75 GHz to 2.35 GHzTypical Power Consumption: 300 mWChip Enable Control PinAvailable in 4-mm × 4-mm QFN-24 PackageESD Protection Exceeds 2 kV (HBM)Industrial Temperature Range: -40°C to +85°CAPPLICATIONSLow-Cost, Low-Jitter Frequency MultiplierAll trademarks are the property of their respective owners.

Description

The CDC421Axxx is a high-performance, low-phase-noise clock generator. It has an integrated low-noise, LC-based voltage-controlled oscillator (VCO) that operates within the 1.75 GHz to 2.35 GHz frequency range. It has an integrated crystal oscillator that operates in conjunction with an external AT-cut crystal to produce a stable frequency reference for a phase-locked loop (PLL)-based frequency synthesizer. The output frequency (fOUT) is proportional to the frequency of the input crystal (fXTAL). The device operates in 3.3-V supply environment and is characterized for operation from -40°C to +85°C. The CDC421Axxx is available in a QFN-24 4-mm × 4-mm package. The CDC421Axxx differs from the CDC421xxx in the following ways: The CDC421Axxx has an improved startup circuit to enable correct operation for all power-supply ramp times. The CDC421Axxx is a high-performance, low-phase-noise clock generator. It has an integrated low-noise, LC-based voltage-controlled oscillator (VCO) that operates within the 1.75 GHz to 2.35 GHz frequency range. It has an integrated crystal oscillator that operates in conjunction with an external AT-cut crystal to produce a stable frequency reference for a phase-locked loop (PLL)-based frequency synthesizer. The output frequency (fOUT) is proportional to the frequency of the input crystal (fXTAL). The device operates in 3.3-V supply environment and is characterized for operation from -40°C to +85°C. The CDC421Axxx is available in a QFN-24 4-mm × 4-mm package. The CDC421Axxx differs from the CDC421xxx in the following ways: The CDC421Axxx has an improved startup circuit to enable correct operation for all power-supply ramp times.