SiTime offers an extensive portfolio of ruggedized Endura™ oscillators for aerospace, defense, and industrial automation applications that demand ultra-high resiliency to a wide range of harsh environmental conditions. These devices deliver the lowest acceleration sensitivity, best shock and vibration resistance, high-reliability (>1 billion hours MTBF), and superior dynamic performance under airflow, thermal gradients, pressure, and power supply noise.
SiTime’s ruggedized devices can be factory-programmed to any combination of frequency, stability, and voltage within a wide range of parameters, eliminating the long lead times and customization costs associated with quartz products. All Endura MHz oscillators conform to MIL-PRF-55310 and MIL-STD-883 specifications. Standard or custom up-screening flows are available.
Endura ruggedized Super-TCXOs are tight stability (±0.05 ppm to ±2.5 ppm), 1 to 220 MHz precision oscillators, engineered to deliver the most stable timing under environmental stressors – airflow, rapid temperature change, shock, vibration, poor power supply, and EMI.
Device | Datasheet | Frequency | Stability(PPM) | Output Type | Supply Voltage(V) | Temp. Range(°C) | Package Size(mm2) |
---|---|---|---|---|---|---|---|
SiT5146 | 1 to 60 MHz | ±0.5 ±1 ±2.5 | LVCMOS Clipped Sinewave | 2.5 2.8 3 3.3 | -20 to +70 -40 to +85 -40 to +105 | 5.0 x 3.2 10-pin | |
SiT5147 | 60 to 220 MHz | ±0.5 ±1 ±2.5 | LVCMOS | 2.5 2.8 3 3.3 | -20 to +70 -40 to +85 -40 to +105 | 5.0 x 3.2 10-pin | |
SiT5346 | 1 to 60 MHz | ±0.1 ±0.2 ±0.25 | LVCMOS Clipped Sinewave | 2.5 2.8 3 3.3 | -20 to +70 -40 to +85 -40 to +105 | 5.0 x 3.2 10-pin | |
SiT5348 | 1 to 60 MHz | ±0.05 | LVCMOS Clipped Sinewave | 2.5 2.8 3 3.3 | 0 to +70 | 5.0 x 3.2 10-pin | |
SiT5349 | 60 to 220 MHz | ±0.05 | LVCMOS | 2.5 2.8 3 3.3 | 0 to +70 | 5.0 x 3.2 10-pin | |
SiT5347 | 60 to 220 MHz | ±0.1 ±0.2 ±0.25 | LVCMOS | 2.5 2.8 3.0 3.3 | -20 to +70 -40 to +85 -40 to +105 | 5.0 x 3.2 10-pin |
SiTime offers ruggedized single-ended Endura oscillators for defense and aerospace applications with a wide range of features. These devices deliver the perfect combination of wide frequency range (1 to 137 MHz), excellent stability (±20 ppm), and wide temperature range (-55 to 125°C) – in any combination.
Device | Datasheet | Frequency | Stability(PPM) | Output Type | Supply Voltage(V) | Temp. Range(°C) | Package Size(mm2) |
---|---|---|---|---|---|---|---|
SiT2045 | 115 to 137 MHz | ±20 ±25 ±50 | LVCMOS | 1.8 2.5 to 3.3 | -40 to 105 (Grade 2) -40 to 125 (Grade 1) -55 to 125 (Ext. Cold Grade 1) | SOT23 (2.9x2.8) | |
SiT2044 | 1 to 110 MHz | ±20 ±25 ±50 | LVCMOS | 1.8 2.5 to 3.3 | -40 to 105 (Grade 2) -40 to 125 (Grade 1) -55 to 125 (Ext. Cold Grade 1) | SOT23 (2.9x2.8) | |
SiT8945 | 115 to 137 MHz | ±20 ±25 ±30 ±50 | LVCMOS | 1.8 2.5 to 3.3 | -40 to +105 -40 to +125 -55 to +125 | 2.0x1.6 2.5x2.0 3.2x2.5 5.0x3.2 7.0x5.0 | |
SiT8944 | 1 to 110 MHz | ±20 ±25 ±30 ±50 | LVCMOS | 1.8 2.5 to 3.3 | -40 to +105 -40 to +125 -55 to +125 | 2.0x1.6 2.5x2.0 3.2x2.5 5.0x3.2 7.0x5.0 |
SiTime’s Endura EMI-reduction oscillators ensure emissions compliance through two techniques: spread spectrum clocking and rise/fall time adjustment of the clock signal. These ruggedized devices, engineered for harsh environments, have ultra-low acceleration sensitivity and high temp operation.
Device | Datasheet | Frequency | Stability(PPM) | Output Type | Supply Voltage(V) | Temp. Range(°C) | Package Size(mm2) |
---|---|---|---|---|---|---|---|
SiT9045 | 1 to 150 MHz | ±20 ±25 ±50 | LVCMOS | 1.8 2.25 to 3.3 | -55 to +125 | 2.0x1.6 2.5x2.0 3.2x2.5 |
SiTime offers Endura high-performance differential oscillators for high reliability aerospace and defense applications. These ruggedized devices provide low jitter and power supply noise rejection (PSNR) in the presence of environmental hazards, such as shock, vibration, noisy power supply, and EMI.
Device | Datasheet | Frequency | Stability(PPM) | Output Type | Supply Voltage(V) | Temp. Range(°C) | Package Size(mm2) |
---|---|---|---|---|---|---|---|
SiT9346 | 1 to 220 MHz | ±10 ±20 ±25 ±50 | LVCMOS LVPECL HCSL | 2.5 2.8 3 3.3 | -40 to +105 | 3.2x2.5 5.0x3.2 7.0x5.0 | |
SiT9347 | 220 to 725 MHz | ±10 ±20 ±25 ±50 | LVPECL LVDS HCSL | 2.5 2.8 3 3.3 | -40 to +105 | 3.2x2.5 5.0x3.2 7.0x5.0 |
SiTime's Endura DCXOs enable users to program output frequency and pull frequency in-system using a digital interface (I2C or SPI), offering designers great flexibility for noiseless clock synchronization. This ruggedized family offers ultra-low acceleration sensitivity and low jitter.
Device | Datasheet | Frequency | Stability(PPM) | Output Type | Supply Voltage(V) | Temp. Range(°C) | Package Size(mm2) |
---|---|---|---|---|---|---|---|
SiT3541 | 1 to 340 MHz | ±20 ±25 ±50 | LVPECL LVDS HCSL | 2.5 to 3.3 | -40 to +85 | 5.0 x 3.2 10-pin | |
SiT3542 | 340 to 725 MHz | ±20 ±25 ±50 | LVPECL LVDS HCSL | 2.5 to 3.3 | -40 to +85 | 5.0 x 3.2 10-pin |
SiTime MEMS VCXOs provide exceptional dynamic performance and high reliability for defense and aerospace applications. These ruggedized devices are engineered to maintain phase noise performance and frequency tuning accuracy in harsh environmental conditions.
Device | Datasheet | Frequency | Stability(PPM) | Output Type | Supply Voltage(V) | Temp. Range(°C) | Package Size(mm2) |
---|---|---|---|---|---|---|---|
SiT3343 | 220 to 725 MHz | ±25 ±30 ±50 | LVPECL LVDS HCSL | 2.5 2.8 3.0 3.3 | -40 to +105 | 3.2x2.5 5.0x3.2 7.0x5.0 | |
SiT3342 | 1 to 220 MHz | ±15 ±25 ±35 ±50 | LVPECL LVDS HSCL | 2.5 2.8 3.0 3.3 | -40 to +105 | 3.2x2.5 5.0x3.2 7.0x5.0 |
SiTime's ruggedized low-frequency devices are ultra-small, low-power solutions that provide new architectural options for applications where space, power, and reliability are critical. These devices use MEMS resonators that are manufactured using the latest generation of EpiSeal™ technology which hermetically seals the resonator, making it immune to external atmospheric elements.
Device | Datasheet | Frequency | Stability(PPM) | Output Type | Supply Voltage(V) | Temp. Range(°C) | Package Size(mm2) |
---|---|---|---|---|---|---|---|
SiT1580 | 32.768 kHz | ±5 | LVCMOS | 1.62 to 3.63 | -20 to +70 -40 to +85 | 1.5x0.8 | |
SiT1581 | 1 Hz to 2.5 MHz | ±50 | LVCMOS | 1.62 to 3.63 | -20 to +70 -40 to +85 | 1.5x0.8 |