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220 MHz to 920 MHz, AEC-Q100 Ultra-low Jitter 125°C Differential Oscillator for Automotive
LoginThe SiT9397 is an AEC-Q100 qualified, ultra-low jitter differential oscillator engineered for automotive applications up to 125°C ambient temperature. It delivers exceptional dynamic performance of 150 fs (typ.) jitter and frequency stability of ±30 ppm in the presence of common automotive environmental stressors such as shock, vibration, rapid thermal transients, and power supply noise. The SiT9397 is available in the industry smallest 2.0 x 1.6 mm package in addition to 2.5 x 2.0 mm and 3.2 x 2.5 mm options.
The SiT9397 can be factory programmed for specific combinations of frequency, stability, voltage, output signaling, and pin 1 functionality. Programmability enables automotive system designers to qualify the device once and use it for different applications. It also eliminates the long lead times and customization costs associated with quartz devices where each combination is custom-built.
This device comes with a unique FlexSwing™ output driver that performs like LVPECL but provides independent control of voltage swing and DC offset. It is designed to interface with chipsets having non-standard input voltage requirements and eliminate all external source-bias resistors. It also integrates multiple on-chip regulators to filter power supply noise, eliminating the need for an external dedicated LDO.
| "Specs" | "Value" |
|---|---|
| Oscillator Type | XO-DE |
| Frequency | 220 to 920 MHz |
| Frequency Stability (ppm) | ±30, ±50 |
| Phase Jitter (rms) | 150 fs |
| Output Type | LVPECL, LVDS, HCSL, Low-power HCSL, FlexSwing |
| Operating Temperature Range (°C) | -40 to +85, -40 to +105, -40 to +125 |
| Pin1 Feature | NF (no function), OE active high, OE active low |
| Voltage Supply (V) | 1.8, 2.5, 3.3, 2.25 to 3.63 , 1.71 to 3.63 |
| Package Type (mm²) | 2.0 x 1.6, 2.5 x 2.0, 3.2 x 2.5 |
| Features | Ultra-low jitter, small size, 125°C |
| Availability | Pre-production Sampling; Contact SiTime for ±25 ppm stability and better |
High performance
- 150 fs jitter (typ.)
- ±30 ppm: Ensures best system performance in hostile environments (contact SiTime for ±25 ppm or better)
20x better vibration sensitivity
Minimizes packet loss in high-vibration environments
Power supply noise immunity
9 fs/mV (typ.)
Simplify power supply design
2.0 x 1.6 mm package
Enables small form-factor system with stringent jitter requirement
Flexible programmable features
- 220 to 920 MHz
- 2.25 to 3.63 V
- LVPECL, LVDS, HCSL, Low-power HCSL, and FlexSwing signaling options: Customized oscillator specifications for optimal system performance;
Superior reliability
- 2.2 billion hours MTBF
- Lifetime warranty: Reduces field failures due to clock components and associated repair costs
- ADAS computer
- ADAS ECU
- Radar
- Infotainment
- LiDAR & Radar
- In-vehicle 10/40/100 Gbps Ethernet
- Collision detection devices
| Resource Name | Type |
|---|---|
| SiT9397 Datasheet | Datasheets |
| Automotive LiDAR | Application Briefs |
| Driver Monitoring System | Application Briefs |
| Automotive ECU | Application Briefs |
| Automotive Smart Mirrors | Application Briefs |
| Autonomous Ground Vehicles | Application Briefs |
| NVIDIA DRIVE Orin Reference Design | Application Briefs |
