The SiT3921 is a highly flexible, differential DCXO with LVPECL and LVDS outputs. This programmable device supports any frequency, 1 to 220 MHz, along with any combination of voltage (1.8 V, 2.5 V-3.3 V), pull range (±25 ppm to ±200 ppm) and package (3225, 5032, 7050). It enables frequency tuning via a unique one-wire interface, eliminating frequency drift that is caused by board noise and simplifying PLL and clock synchronization design. It comes in 3 industry-standard 6-pin packages (3.2x2.5 mm, 5.0x3.2 mm, 7.0x5.0 mm).
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| "Specs" | "Value" |
|---|---|
| Frequency | 1 to 220 MHz |
| Frequency Stability (ppm) | ±10 , ±25 , ±50 |
| Operating Temperature Range (°C) | -20 to +70 , -40 to +85 |
| Package Type (mm²) | 3.2x2.5 , 5.0x3.2 , 7.0x5.0 |
| Oscillator Type | DCXO-DE |
| Phase Jitter (rms) | 0.5 ps |
| Pull Range (ppm) | ±25 , ±50 , ±100 , ±200 , ±400 , ±800 , ±1600 |
| Voltage Supply (V) | 2.5 , 3.3 |
| Features | Digitally controlled , Field Programmable |
| Availability | Production |
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Image: SiT3921 6-pin package, top & bottom
- Digitally controlled 1 ppb frequency pull resolution
- Frequency from 1 MHz to 220 MHz
- Supply voltage of 1.8 V; 2.5 V to 3.3 V
- Frequency stability from ±10 ppm to ±50 ppm
- Pull range from ±25 ppm to ±1600 ppm:
- Eliminating a need for external DAC
- Customized specification for optimal system performance
- Easy availability of any device specifications within the operating range
One-wire digital frequency tuning
- Simpler loop control in software controlled system PLL
- More consistent PLL bandwidth over operating range
- Faster calibration and lock time
- Reduction of modulation harmonics;
Three industry-standard packages
- Minor modification to existing design using VCXO to adopt the DCXO;
4 to 6 weeks lead time
- Reduce inventory overhead
- Mitigate shortage risks
- Networking & Communication Systems
- Networked Video Systems & Digitizers
- Jitter Cleaners
- Networked Audio Systems
- Instrumentation
- Low-bandwidth Analog Phase Locked Loop (PLL)
- FPGA Data Recovery
Evaluation Boards (Contact SiTime) – SiT6097 (3225) | SiT6086 (5032) | SiT6085 (7050)
Reliability Calculator – Get FIT/MTBF data for various operating conditions
Frequency Slope (dF/dT) Calculator – Calculate frequency slope over temperature
QFN 3225 6-Pins | QFN 5032 6-Pins | QFN 7050 6-Pins – Preview packages with QFN 3D step models
| Resource Name | Resource Type | Date | Format | Size |
|---|
Step 1: Enter or Configure SiT3921 Part Number
Step 2. Purchase
Quantity
| Qty: | Unit Price | Total |
|---|---|---|
| --- | --- | --- |
| Quantity | Unit Price | |
|---|---|---|
| 199 | --- | |
| 100-499 | --- | |
| 500-999 | --- | |
| 1,000-4,999 | --- | |
| > 4,999 | --- |