
Allicdata Part #: | SIT3821AI-1D-25EG-ND |
Manufacturer Part#: |
SIT3821AI-1D-25EG |
Price: | $ 17.50 |
Product Category: | Crystals, Oscillators, Resonators |
Manufacturer: | SiTime |
Short Description: | OSC PROG LVPECL 2.5V EN/DS SMD |
More Detail: | VCXO LVPECL 1MHz ~ 220MHz Programmable Oscillator ... |
DataSheet: | ![]() |
Quantity: | 1000 |
1 +: | $ 15.75000 |
10 +: | $ 14.09250 |
50 +: | $ 10.77640 |
100 +: | $ 9.94742 |
500 +: | $ 6.96320 |
Frequency Stability: | ±10ppm |
Current - Supply (Disable) (Max): | 35mA |
Height: | 0.039" (1.00mm) |
Size / Dimension: | 0.276" L x 0.197" W (7.00mm x 5.00mm) |
Package / Case: | 6-SMD, No Lead |
Mounting Type: | Surface Mount |
Ratings: | -- |
Current - Supply (Max): | 69mA |
Spread Spectrum Bandwidth: | -- |
Operating Temperature: | -40°C ~ 85°C |
Frequency Stability (Total): | -- |
Series: | SiT3821 |
Voltage - Supply: | 2.5V |
Output: | LVPECL |
Function: | Enable/Disable |
Available Frequency Range: | 1MHz ~ 220MHz |
Programmable Type: | Programmed by Digi-Key (Enter your frequency in Web Order Notes) |
Type: | VCXO |
Base Resonator: | MEMS |
Part Status: | Active |
Packaging: | Bulk |
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Programmable Oscillators
Programmable Oscillators, commonly referred to as PO, are electrical oscillators that are capable of producing different waveforms, frequencies, and/or amplitudes without the need of electrical or mechanical changes. Depending on the model, these can be programmed via a computer, a laptop, an external device, or even remotely by an operator. This ability makes them extremely useful in a number of applications where an oscillator needs to produce an exact waveform, frequency, and/or amplitude. The SIT3821AI-1D-25EG is a prime example of this technology.
SIT3821AI-1D-25EG Application Field and Working Principles
The primary application for the SIT3821AI-1D-25EG is in advanced research and development for the aerospace, defense, and telecommunications industries. This oscillator was designed specifically for applications in the microwave and RF bands, where the correct waveform and frequency generation is critical to the operation of advanced systems. The SIT3821AI-1D-25EG utilizes a special synthesis process to create oscillations of desired frequency and waveform so that it can be programmed to produce what is required without significant manual intervention or costly hardware upgrades. It features variable output levels, which is adjustable on the fly and can easily be programmed to produce an exact frequency and/or waveform.
Working Principles of SIT3821AI-1D-25EG Programmable Oscillator
The working principles of the SIT3821AI-1D-25EG programmable oscillator is the combination of two techniques—direct digital frequency synthesis and voltage controlled oscillations. The process begins with a high resolution digital-to-analog converter which can take in input from a proprietary computer interface. The output of the converter is then fed into an oscillator circuitry, via an external voltage control, to generate the desired output. As an example, the input from the converter could be configured to produce a specific waveform and frequency, which can then be adjusted on the fly via the external control.
A major advantage of this oscillator is its ability to store up to eight configurations and parameters for different conditions. This makes it ideal for situations that require rapid reconfiguration of waveforms, especially in aerospace and defense applications where immediate transformations in communications or environment may be necessary. It is also significantly more energy efficient than traditional circuit-based oscillators, since it requires no external components. Additionally, the SIT3821AI-1D-25EG features advanced temperature control and monitoring, ensuring that its accuracy remains consistent through varying temperature conditions.
Conclusion
In conclusion, the SIT3821AI-1D-25EG is an advanced programmable oscillator that has the capability to produce an exact waveform and frequency in a variety of applications. The combination of direct digital frequency synthesis and voltage control allows it to adjust its output on the fly and store up to eight different configurations. Additionally, the oscillator provides advanced temperature control, which helps maintain accuracy despite changing conditions. For these reasons, the SIT3821AI-1D-25EG is used in a variety of advanced applications in the aerospace, defense, and telecommunications industries.
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Part Number | Manufacturer | Price | Quantity | Description |
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SIT3809AI-22-33NE-100.000000T | SiTime | 6.08 $ | 1000 | OSC MEMS 100.0000MHZ LVCM... |
SIT3821AC-2C3-33EE148.500000T | SiTime | 9.44 $ | 1000 | OSC VCXO 148.5000MHZ LVDS... |
SIT3822AI-1DF-33EH491.520000Y | SiTime | 20.91 $ | 1000 | OSC VCXO 491.5200MHZ LVPE... |
SIT3907AI-C2-25NB-200.000000Y | SiTime | 8.15 $ | 1000 | OSC DCXO 200.0000MHZ LVCM... |
SIT3809AC-DF-33NY-98.304000Y | SiTime | 7.49 $ | 1000 | OSC MEMS 98.3040MHZ LVCMO... |
SIT3821AC-2C2-25EE135.000000Y | SiTime | 7.32 $ | 1000 | OSC VCXO 135.0000MHZ LVDS... |
SIT3808AI-CF-33NM-50.000000Y | SiTime | 5.75 $ | 1000 | OSC MEMS VCXO 50.0000MHZ ... |
SIT3808AC-DF-33NZ-10.000000T | SiTime | 5.32 $ | 1000 | OSC MEMS VCXO 10.0000MHZ ... |
SIT3808AC-2F-33NB-27.000000Y | SiTime | 5.05 $ | 1000 | OSC XO 3.3V 27MHZ NC27MHz... |
SIT3907AI-23-33NH-30.000000T | SiTime | 2.98 $ | 1000 | OSC DCXO 30.0000MHZ LVCMO... |
SIT3821AI-1C-25EG | SiTime | 17.5 $ | 1000 | OSC PROG LVPECL 2.5V EN/D... |
SIT3821AI-2D-25EY | SiTime | 17.5 $ | 1000 | OSC PROG LVDS 2.5V 10PPM ... |
SIT3822AC-1C-33NG | SiTime | 17.5 $ | 1000 | OSC PROG LVPECL 3.3V 10PP... |
SIT3809AC-2-28EX | SiTime | 18.62 $ | 1000 | OSC PROG LVCMOS 2.8V EN/D... |
SIT3809AC-C-25NG | SiTime | 20.69 $ | 1000 | OSC PROG LVCMOS 2.5V 10PP... |
SIT3809AC-C-28SE | SiTime | 20.69 $ | 1000 | OSC PROG LVCMOS 2.8V 10PP... |
SIT3809AI-C-25SY | SiTime | 20.69 $ | 1000 | OSC PROG LVCMOS 2.5V 10PP... |
SIT3821AI-2B-33NY | SiTime | 20.99 $ | 1000 | OSC PROG LVDS 3.3V 10PPM ... |
SIT3907AC-D2833NH-24.000000Y | SiTime | 3.16 $ | 1000 | OSC DCXO 24.0000MHZ LVCMO... |
SIT3808AC-D2-33EY-22.579200Y | SiTime | 3.51 $ | 1000 | OSC MEMS VCXO 22.5790MHZ ... |
SIT3808AI-D2-25EE-32.768000T | SiTime | 3.79 $ | 1000 | OSC MEMS VCXO 32.7680MHZ ... |
SIT3907AC-CF-33NM-4.000000T | SiTime | 4.75 $ | 1000 | OSC DCXO 4.0000MHZ LVCMOS... |
SIT3701AI-12-33F-32.76800Y | SiTime | 1.2 $ | 1000 | OSC MEMS 32.7680MHZ LVCMO... |
SIT3808AI-C2-XXXX-000.FP0000 | SiTime | 2.47 $ | 151 | OSC PGM 1MHZ - 80MHZ SMDV... |
SIT3821AI-1D-33EE | SiTime | 17.5 $ | 1000 | OSC PROG LVPECL 3.3V EN/D... |
SIT3822AC-1D-33EH | SiTime | 17.5 $ | 1000 | OSC PROG LVPECL 3.3V EN/D... |
SIT3822AI-1C-25EE | SiTime | 17.5 $ | 1000 | OSC PROG LVPECL 2.5V EN/D... |
SIT3822AI-1D-33EG | SiTime | 17.5 $ | 1000 | OSC PROG LVPECL 3.3V EN/D... |
SIT3809AI-2-18SH | SiTime | 18.62 $ | 1000 | OSC PROG LVCMOS 1.8V 10PP... |
SIT3809AI-2-25SG | SiTime | 18.62 $ | 1000 | OSC PROG LVCMOS 2.5V 10PP... |
SIT3809AC-C-25EH | SiTime | 20.69 $ | 1000 | OSC PROG LVCMOS 2.5V EN/D... |
SIT3809AC-D-25SY | SiTime | 20.69 $ | 1000 | OSC PROG LVCMOS 2.5V 10PP... |
SIT3809AI-D-25SG | SiTime | 20.69 $ | 1000 | OSC PROG LVCMOS 2.5V 10PP... |
SIT3701AC-31-33C-100.000000T | SiTime | 0.43 $ | 1000 | OSC MEMS 100.0000MHZ LVCM... |
SIT3821AC-2CF-33EM156.250000Y | SiTime | 16.46 $ | 1000 | OSC VCXO 156.2500MHZ LVDS... |
SIT3921AI-2C2-25NZ148.500000T | SiTime | 12.78 $ | 1000 | OSC DCXO 148.5000MHZ LVDS... |
SIT3822AC-1C3-33EZ224.550000T | SiTime | 12.37 $ | 1000 | OSC VCXO 224.5500MHZ LVPE... |
SIT3822AC-1C3-33EZ238.550000Y | SiTime | 12.37 $ | 1000 | OSC VCXO 238.5500MHZ LVPE... |
SIT3821AC-2C2-25EH153.600000Y | SiTime | 10.98 $ | 1000 | OSC VCXO 153.6000MHZ LVDS... |
SIT3809AC-C3-33EZ-175.550000T | SiTime | 7.62 $ | 1000 | OSC MEMS 175.5500MHZ LVCM... |
OSC MEMSSSXO LVCMOS 1MHz ~ 141MHz Progra...

OSC MEMSSSXO LVCMOS 1MHz ~ 141MHz Progra...

OSC MEMSSSXO LVCMOS 1MHz ~ 141MHz Progra...

OSC MEMSSSXO LVCMOS 1MHz ~ 141MHz Progra...

OSC MEMSSSXO LVCMOS 1MHz ~ 141MHz Progra...

OSC MEMSSSXO LVCMOS 1MHz ~ 141MHz Progra...
