CDCE421ARGER
ActiveFULLY INTEGRATED WIDE RANGE LOW-JITTER CRYSTAL OSCILLATOR CLOCK GENERATOR
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CDCE421ARGER
ActiveFULLY INTEGRATED WIDE RANGE LOW-JITTER CRYSTAL OSCILLATOR CLOCK GENERATOR
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Technical Specifications
Parameters and characteristics commom to parts in this series
| Specification | CDCE421ARGER | CDCE421 Series |
|---|---|---|
| Differential - Input:Output | No/Yes | No/Yes |
| Divider/Multiplier | - | Yes/No |
| Embedded | - | False |
| Frequency - Max [Max] | 1.2 GHz | 1.2 GHz |
| Function | - | Clock Generator |
| Input | LVCMOS, Crystal | LVCMOS, Crystal |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Circuits | 1 | 1 |
| Operating Temperature [Max] | 85 °C | 85 °C |
| Operating Temperature [Min] | -40 °C | -40 °C |
| Output | LVPECL, LVDS | LVPECL, LVDS |
| Package / Case | 24-VFQFN Exposed Pad | 24-VFQFN Exposed Pad, Die |
| PLL | True | True |
| Ratio - Input:Output [custom] | 1:1 | 1:1 |
| Supplied Contents | - | Board(s) |
| Supplier Device Package | 24-VQFN (4x4) | 24-VQFN (4x4), Diesale, Wafersale |
| Type | Clock Generator | Clock Generator, Timing |
| Utilized IC / Part | - | CDCE421A |
| Voltage - Supply [Max] | 3.6 V | 3.6 V |
| Voltage - Supply [Min] | 3 V | 3 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tape & Reel (TR) | 3000 | $ 7.96 | |
| Texas Instruments | LARGE T&R | 1 | $ 10.23 | |
| 100 | $ 8.93 | |||
| 250 | $ 6.89 | |||
| 1000 | $ 6.16 | |||
CDCE421 Series
IC CLOCK GENERATOR 24VQFN
| Part | Mounting Type | PLL | Package / Case | Divider/Multiplier | Voltage - Supply [Max] | Voltage - Supply [Min] | Output | Ratio - Input:Output [custom] | Number of Circuits | Input | Type | Supplier Device Package | Frequency - Max [Max] | Operating Temperature [Min] | Operating Temperature [Max] | Differential - Input:Output | Embedded | Utilized IC / Part | Function | Supplied Contents |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments CDCE421RGET | Surface Mount | 24-VFQFN Exposed Pad | Yes/No | 3.6 V | 3 V | LVDS, LVPECL | 1:1 | 1 | Crystal, LVCMOS | Clock Generator | 24-VQFN (4x4) | 1.2 GHz | -40 °C | 85 °C | No/Yes | |||||
Texas Instruments CDCE421Y | Surface Mount | Die | Yes/No | 3.6 V | 3 V | LVDS, LVPECL | 1:1 | 1 | Crystal, LVCMOS | Clock Generator | Diesale | 1.2 GHz | -40 °C | 85 °C | No/Yes | |||||
Texas Instruments CDCE421ARGET | Surface Mount | 24-VFQFN Exposed Pad | 3.6 V | 3 V | LVDS, LVPECL | 1:1 | 1 | Crystal, LVCMOS | Clock Generator | 24-VQFN (4x4) | 1.2 GHz | -40 °C | 85 °C | No/Yes | ||||||
Texas Instruments CDCE421RGETG4 | Surface Mount | 24-VFQFN Exposed Pad | Yes/No | 3.6 V | 3 V | LVDS, LVPECL | 1:1 | 1 | Crystal, LVCMOS | Clock Generator | 24-VQFN (4x4) | 1.2 GHz | -40 °C | 85 °C | No/Yes | |||||
Texas Instruments CDCE421AEVM | Timing | CDCE421A | Clock Generator | Board(s) | ||||||||||||||||
Texas Instruments CDCE421YS | Surface Mount | Die | Yes/No | 3.6 V | 3 V | LVDS, LVPECL | 1:1 | 1 | Crystal, LVCMOS | Clock Generator | Wafersale | 1.2 GHz | -40 °C | 85 °C | No/Yes | |||||
Texas Instruments CDCE421ARGER | Surface Mount | 24-VFQFN Exposed Pad | 3.6 V | 3 V | LVDS, LVPECL | 1:1 | 1 | Crystal, LVCMOS | Clock Generator | 24-VQFN (4x4) | 1.2 GHz | -40 °C | 85 °C | No/Yes | ||||||
Texas Instruments CDCE421RGER | Surface Mount | 24-VFQFN Exposed Pad | Yes/No | 3.6 V | 3 V | LVDS, LVPECL | 1:1 | 1 | Crystal, LVCMOS | Clock Generator | 24-VQFN (4x4) | 1.2 GHz | -40 °C | 85 °C | No/Yes |
Description
General part information
CDCE421 Series
The CDCE421A is a high-performance, low phase noise clock generator. It has two fully-integrated, low-noise, LC-based voltage-controlled oscillators (VCOs) that operate in the 1.750-GHz to 2.350-GHz frequency range. It also features an integrated crystal oscillator that operates in conjunction with an external AT-cut crystal to produce a stable frequency reference for the phase-locked loop (PLL) based frequency synthesizer.
The output frequency (fOUT) is proportional to the frequency of the input crystal (fXTAL). The prescaler divider, feedback divider, output divider, and VCO selection set the output frequency with respect to fXTAL.
In the CDCE421A, the feedback divider is set automatically with respect to the prescaler setting. The product of the prescaler and the feedback divider should be between 60 and 64 as shown in to maintain a stable control loop.
Documents
Technical documentation and resources