Cristales y resonadores
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Productos (3)
ASDMB-100.000MHZ-LY-T - 100MHz MEMS LVCMOS XO | Abracon
The Abracon ASDMB-100.000MHZ-LY-T is a 100 MHz XO (Standard) MEMS LVCMOS oscillator in a 4-pin 2.5 mm x 2.0 mm x 0.9 mm SMD2520 package with ±10 ppm frequency stability, 1.8 V to 3.3 V supply, and integrated standby (power-down) function. It delivers 16 mA typical supply current with 55% duty cycle and 15 pF LVCMOS load drive. A MEMS oscillator is a silicon-based timing device that replaces traditional quartz crystal oscillators with a silicon MEMS resonator and a Phase-Locked Loop (PLL) synthesizer on the same silicon die. Compared to quartz, MEMS oscillators provide superior shock and vibration resistance, better long-term aging characteristics, faster startup, and lower power consumption. The ASDMB Series combines an Abracon-branded Pure Silicon MEMS resonator with an integrated ASIC, housed in an ultra-miniature 2520 SMD package — making it part of the broader clock oscillator -> frequency control -> timing IC -> semiconductor device hierarchy. The 2520 footprint is one of the smallest standard oscillator packages, enabling compact PCB layouts in space-constrained designs. Key features include 100 MHz nominal frequency with ±10 ppm stability over the full -40°C to +85°C industrial operating range, wide 1.8 V / 2.5 V / 3.3 V supply compatibility, low 16 mA typical supply current, integrated standby (power-down) pin for power gating, 15 pF LVCMOS output drive at 55% symmetry, and RoHS/RoHS II compliance. The MEMS construction provides superior shock and vibration immunity compared to quartz alternatives. Architecturally, the ASDMB series combines Abracon's Pure Silicon MEMS resonator with a programmable ASIC PLL synthesizer, eliminating the need for external load capacitors required by bare crystal resonators. This integration delivers tighter frequency stability, faster production lead times, and short lead times for industrial and consumer designs compared to legacy quartz XOs. Typical applications include Ethernet PHY clocking, networking switches and routers, FPGA and processor reference clocks, industrial automation, and consumer electronics requiring a stable 100 MHz reference. The 2520 package fits space-constrained layouts in IoT endpoints, SSDs, and high-density networking line cards. When designing with this part, place the standby pin through a 10 kΩ pull-up to VDD for always-on keep power operation, or drive it low for power-down (≤10 µA typ). Maintain clean supply decoupling with a 0.1 µF ceramic capacitor adjacent to the VDD pin. The 4-pad SMD2520 footprint requires standard reflow profile per JEDEC J-STD-020. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet.
DSC1001CL5-025.0000T - 25MHz MEMS CMOS XO, ±10ppm | Microchip
The Microchip Technology DSC1001CL5-025.0000T is a 25 MHz silicon MEMS-based CMOS crystal oscillator (XO) in a 4-pin 3.2 mm x 2.5 mm VDFN (QFN) surface-mount package, with ±10 ppm frequency stability over -40 °C to +105 °C and a supply voltage range of 1.8 V to 3.3 V. The device delivers an LVCMOS-compatible output, low power consumption (6.3 mA typical), and an integrated standby (power-down) function on pin 1 for energy-efficient designs. An XO (crystal oscillator) is a self-contained timing device that generates a fixed-frequency clock without requiring an external resonator. Unlike traditional quartz crystals, MEMS-based oscillators use a silicon resonator, offering improved shock and vibration resistance, faster startup, and eliminating crystal-related aging effects. MEMS XOs occupy the same role in the timing hierarchy as quartz crystals -> oscillators -> clock generators -> frequency references, and are increasingly preferred for rugged industrial, automotive, and portable applications. Key features include ±10 ppm total stability over the full -40 °C to +105 °C temperature range, a duty cycle near 55 % at 25 MHz, 15 pF output load capability, and a maximum period jitter of 50 ps peak-peak over 50,000 cycles. The DSC1001 family covers 1 MHz to 150 MHz across the same footprint, allowing PCB reuse for multiple clock frequencies. The silicon resonator architecture eliminates quartz-crystal stress fractures common in portable or high-vibration environments. Built-in standby reduces quiescent current during power-down, making the part well-suited to battery-powered systems that duty-cycle their clock domains. Spread-spectrum variants are also available within the family for EMI-sensitive applications. Typical applications include microcontroller clock references in industrial controllers, USB and peripheral timing in portable electronics, communication modules, IoT sensor hubs, and automotive infotainment reference clocks. Any system that previously used a discrete 25 MHz crystal with a separate oscillator IC can be simplified to a single part. When designing in this part, place the decoupling capacitor as close as possible to pin 4 (VDD) and route the LVCMOS output trace with 50 Ω characteristic impedance to avoid reflections. Confirm that downstream devices tolerate the 15 pF load rating; heavier loads may degrade rise/fall time and duty cycle. This page synthesizes distributor pricing, drop-in alternatives, pinout detail, and design notes drawn from the Microchip DSC1001 datasheet family - providing practical integration guidance that goes beyond the bare datasheet.
SIT8918BAU71-33E-50.000000G - 50MHz MEMS XO, 3.3V, ±20ppm | SiTime
The SiTime SIT8918BAU71-33E-50.000000G is a 50 MHz MEMS-based XO (Standard) oscillator housed in a 4-SMD, No Lead 2.0 x 1.6 mm package, offering LVCMOS/LVTTL output at a 3.3 V supply with enable/disable control, ±20 ppm stability across the -40 °C to +125 °C automotive temperature range, and a low 4.7 mA typical supply current. According to the SiTime SiT8918 datasheet, this part targets space-constrained, high-temperature, and vibration-prone environments as a quartz-crystal replacement. What is a MEMS XO? A MEMS (Micro-Electro-Mechanical Systems) oscillator is a solid-state timing device that uses a silicon resonator instead of a quartz crystal. XO, or standard crystal oscillator, means it is a fixed-frequency oscillator (not a VCXO or TCXO). MEMS oscillators fall under the broader hierarchy: resonator (MEMS resonator) -> oscillator -> clock generator -> frequency control component -> semiconductor. They are widely used as drop-in replacements for legacy quartz oscillators because of superior shock and vibration immunity. Key features of the SIT8918BAU71-33E-50.000000G include best-in-class 70 g vibration and 50,000 g shock resistance, 0.1 ppb/g low vibration sensitivity, an ultra-small 2.0 x 1.6 mm industry-standard SMD footprint, and support for any frequency from 1 MHz to 110 MHz with factory-programmed accuracy. These specifications make the device robust for outdoor, industrial, and automotive-grade applications. From an architecture perspective, the SiT8918 family integrates a silicon MEMS resonator, a low-jitter PLL, and an LVCMOS output driver on a single die. This eliminates the need for external load capacitors required by quartz crystals, simplifies the BOM, and provides faster startup compared to AT-cut quartz. The SiTime MEMS process technology also yields a ten-times-better reliability FIT rate than typical quartz devices. Typical applications include automotive infotainment and ADAS clock references, industrial sensor and motor-control timing, outdoor IoT gateways, surveillance camera video timing, and consumer audio/video systems. The wide -40 °C to +125 °C operating range plus 50,000 g shock tolerance make it ideal for any design where quartz reliability is a concern. When designing with the SiT8918BAU71-33E-50.000000G, route the OE (output enable) pin to a GPIO if you need power-gating control, otherwise leave it floating for always-on operation. Place a 0.1 µF decoupling capacitor adjacent to the Vdd pin and follow standard 4-SMD land-pattern PCB layout guidelines. No external load capacitors are required. This page synthesizes distributor pricing, drop-in MEMS and quartz alternatives, application-specific design notes, and a parametric comparison table not consolidated on the manufacturer datasheet.