Silicon Laboratories Announces First User-Programmable XOs and VCXOs with Any-Rate Frequency Synthesis.Low Jitter A flicker or fluctuation in a transmission signal or display image. The term is used in several ways, but it always refers to some offset of time and space from the norm. For example, in a network transmission, jitter would be a bit arriving either ahead or behind a standard clock cycle Oscillator oscillator
Mechanical or electronic device that produces a back-and-forth periodic motion. A pendulum is a simple mechanical oscillator that swings with a constant amplitude, requiring the addition of energy at each swing only to compensate for the energy lost because of air Generates any Frequency from 10 MHz (MegaHertZ) One million cycles per second. It is used to measure the transmission speed of electronic devices, including channels, buses and the computer's internal clock. A one-megahertz clock (1 MHz) means some number of bits (16, 32, 64, etc. to 1.4 GHz
AUSTIN, Texas -- Silicon Laboratories Inc. (Nasdaq:SLAB), a leader in high-performance, analog-intensive, mixed-signal ICs, today announced the Si570/1 family, the industry's first user-programmable crystal oscillators (XO) and voltage-controlled crystal oscillators (VCXO VCXO Voltage Controlled Crystal Oscillator ) supporting any-rate frequency synthesis. Using patented DSPLL([R]) technology and an industry-standard I2C I2C Inter-Integrated Circuit
I2C Intelligent Interface Controller
I2C Intelligent Controller interface, a single device can generate any output frequency from 10 MHz to 1.4 GHz at jitter levels of 0.3 picoseconds rms. The Si570 Any-Rate XO and Si571 Any-Rate VCXO are ideal for high-performance applications requiring frequency flexible clock sources including next-generation networking equipment, wireless base stations, test and measurement equipment, HDTV (High Definition TV) A set of digital television (DTV) standards that offer the highest resolution and sharpest picture. Although some HDTV sets are available in standard (rather square) screen sizes, the overwhelming majority of sets are wide screen, which eliminates video infrastructure and high-speed data acquisition equipment.
Hardware designers have traditionally used multiple fixed-frequency XOs, VCXOs or voltage-controlled SAW oscillators (VCSO VCSO Voltage Controlled SAW Oscillator (Micro Networks Corp.) ) in designs requiring a system timing architecture that is reconfigurable to operate at different frequencies. This approach is expensive, requires complex analog phase locked loop (PLL PLL - phase-locked loop ) design and layout and slows time-to-market for new hardware designs.
The Si570/1 programmable XOs and VCXOs replace multiple fixed-frequency oscillators with a single, frequency-flexible oscillator that can generate any frequency from 10 MHz to 1.4 GHz, significantly reducing component count, system cost and board space while simplifying PLL design and layout. The Si570/1 offer improved system reliability because multiple fixed-frequency oscillators, each representing a potential point of failure, are eliminated.
The Si570/1 operating frequency is user-programmable via an industry-standard I2C interface, simplifying device programming and easing reconfigurability. The Si570/1 can be reprogrammed an unlimited number of times, enabling system designers to reuse a common timing architecture across a wide range of end applications, simplifying design and speeding time-to-market.
"We've applied our proven DSPLL technology to dramatically simplify timing architectures in applications requiring multiple clock frequencies. The Si570 XO and Si571 VCXO address the growing need for low jitter, frequency-flexible clock sources, enabling hardware designers to decrease the number of oscillators in their designs while reducing cost and design time," said David Bresemann, vice president of Silicon Laboratories. "With the addition of the Si570/1 family of any-rate oscillators, Silicon Labs has created the industry's broadest portfolio of reconfigurable, frequency-agile precision clock and frequency control products."
The Si570/1 devices are available in an industry standard, RoHS-compliant 5 x 7 mm surface mount package with support for all common output formats (LVPECL LVPECL Low Voltage Positive Emitter Coupled Logic , LVDS (Low Voltage Differential Signaling) A transmission method for sending digital information. LVDS sends data over data high and data low lines rather than data and ground. , CMOS (Complementary Metal Oxide Semiconductor) Pronounced "c-moss." The most widely used integrated circuit design. It is found in almost every electronic product from handheld devices to mainframes. and CML 1. CML - A query language.
["Towards a Knowledge Description Language", A. Borgida et al, in On Knowledge Base Management Systems, J. Mylopoulos et al eds, Springer 1986].
2. CML - Concurrent ML. ). The family offers three speed grades: 10 MHz to 1.4 GHz, 10 MHz to 810 MHz and 10 MHz to 215 MHz. The Si570 Any-Rate XO is available with two temperature stability options, +/-20 ppm and +/-50 ppm. The Si571 Any-Rate VCXO has a wide selection of absolute pull range (APR APR
See: Annual Percentage Rate ) options ranging from +/-12 ppm to +/-375 ppm, giving hardware designers increased flexibility when choosing the best device for an application. The Si570/1 support operation from -40 to +85 C.
Pricing and Availability
Available now, the Si570 is priced from $10.02 to $54.79 in quantities of 1K depending on speed grade and temperature stability. The Si571 is priced from $23.39 to $122.76 in quantities of 1K depending on speed grade and temperature stability.
Silicon Laboratories Inc.
Silicon Laboratories is an industry leader in the innovation of high-performance, analog-intensive, mixed-signal ICs. Developed by a world-class engineering team with unsurpassed expertise in mixed-signal design, Silicon Labs' diverse portfolio of highly-integrated, easy-to-use products offers customers significant advantages in performance, size and power consumption. These patented solutions serve a broad set of markets and applications including consumer, communications, computing, industrial and automotive.
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