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340 to 725 MHz I2C/SPI Programmable Oscillator
LoginThe SiT3522 is an ultra-low jitter, user programmable oscillator. This device is based on SiTime's Elite Platform™ that utilizes unique DualMEMS™ temperature sensing and TurboCompensation™ technology to deliver exceptional dynamic performance, making it:
- Resistant to airflow and thermal shock
- Resistant to shock and vibration
- Superior power supply noise rejection
The device supports two in-system programming options:
1) Any-frequency mode to reprogram the clock output to any frequency between 340 MHz to 725 MHz
2) Digitally controlled oscillator (DCO) mode to steer or pull the clock up to ±3200 ppm
Combined with wide frequency range and user programmability, this device is ideal for telecom, networking and industrial applications that require a variety of frequencies and operate in noisy environments.
| "Specs" | "Value" |
|---|---|
| Oscillator Type | I2C/SPI ISP XO-DE |
| Frequency | 340 to 725 MHz |
| Frequency Stability (ppm) | ±20, ±25, ±50 |
| Phase Jitter (rms) | ≤ 0.23 ps |
| Output Type | LVPECL, LVDS, HCSL |
| Operating Temperature Range (°C) | -20 to +70, -40 to +85, -40 to +105 |
| Pull Range (ppm) | ±25, ±50, ±80, ±100, ±125, ±150, ±200, ±400, ±600, ±800, ±1200, ±1600, ±3200 |
| Voltage Supply (V) | 2.5 to 3.3 |
| Package Type (mm²) | 5.0 x 3.2 10-pin |
| Features | In-System Programmable via I2C/SPI |
| Availability | Production |
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SiT3522 I2C-SPI 5032 10-pins package
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SiT3522 pin assignments
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SiT3522 block diagram
In-system programmable from 340.000001 MHz and 725 MHz via I2C/SPI
Digital frequency pulling (DCO) via I2C/SPI
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Output frequency pulling with perfect pull linearity
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13 programmable pull range options to ±3200 ppm
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Frequency pull resolution as low as 5 ppt (0.005 ppb)
Dynamic performance
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0.1 ppb/g, superior shock and vibration resistance
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No activity dips or micro jumps
Integrated LDO for on-chip power supply noise filtering
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0.05 ps/mV power supply noise rejection (PSNR)
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Reduces BOM by eliminating a LDO
Programmable LVPECL, LVDS, or HCSL output
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Programmable LVPECL, LVDS Swing
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LVDS Common Mode Voltage Control
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Optimizes signal integrity
Superior reliability
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1 billion hours MTBF
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Lifetime Warranty: Reduces repair costs and field failures due to clock components
- 10G to 100G Ethernet
- SONET
- Storage, servers and datacenters
- 测量与测试
