Precision quartz timing for industrial robotics and motor control systems

Each loop is referenced to a clock, and the quality of that clock affects cycle time, positional error, and how closely the axes stay in step. The operating environment works against the clock. Timing devices sit beside inverters that switch hundreds of volts in nanoseconds, on arms that accelerate and vibrate through every cycle, and in sealed enclosures where ambient temperature climbs well above room temperature. A reference in that setting has to hold frequency through temperature, supply variation, mechanical stress, and years of continuous duty.

A clock oscillator combines a quartz crystal with its drive circuit in one package and supplies a defined output. That removes the load capacitance, drive level, and negative resistance work that comes with a discrete crystal. Kyocera AVX specifies frequency tolerance for its clock oscillators as an inclusive figure covering initial tolerance at 25°C, temperature characteristics, supply voltage variation, load variation, first-year aging, and the effects of vibration and shock. A single inclusive number is easier to design against than separate contributions that have to be summed by hand. Output type follows from the signal path. CMOS outputs suit microcontrollers, FPGAs, and general logic at moderate frequencies. Differential outputs, including LVDS, LV-PECL, and HCSL, reject common-mode noise and hold their edges over longer traces, which matters on a board shared with switching power electronics and on high-speed links to vision sensors, backplanes, and storage.

For performance and application fit, start with frequency, inclusive tolerance, output type, and supply voltage, then confirm current consumption and whether a standby function is needed for low-power modes. Environmental requirements set the temperature grade, with -40°C to +85°C, +105°C, and +125°C options covering most industrial and vehicle designs, and they determine whether an automotive grade device is required. Package size matters in servo amplifiers, sensor heads, and handheld units where board area is fixed. For availability and lifecycle confidence, a series such as the K-series spans 2.0 x 1.6 mm to 7.0 x 5.0 mm, so a design can move between footprints without changing supplier or output specification.

Controller and network clocking. The K-series clock oscillators provide a CMOS output from 1.5 MHz to 160 MHz with a wide 1.6 V to 3.63 V supply, a standby function, and packages from 2.0 x 1.6 mm upward. They suit microcontroller and FPGA clocking and industrial Ethernet interfaces such as EtherCAT and PROFINET. The KC2016K25.0000C10E00 supplies the 25 MHz reference common to Ethernet physical layers in a 2.0 x 1.6 mm package.
Housekeeping and timekeeping. Controllers also need a slow clock for event logging, watchdog timing, and low-power states. The KC2520K32K7680C12A00 delivers a 32.768 kHz output from a 2.5 x 2.0 mm oscillator with ±25 ppm inclusive tolerance, which removes the tuning fork oscillator circuit from the design and gives the processor a ready-made timekeeping reference.
Vision, encoder, and high-speed links. Machine vision cameras, encoder interfaces, and FPGA serial links need differential clocking. The F-series covers 100 MHz, 125 MHz, and 156.25 MHz with LVDS, LV-PECL, or HCSL outputs at 2.5 V or 3.3 V, in packages from 2.0 x 1.6 mm to 3.2 x 2.5 mm. The KC2016F125.000L36K00 provides a 125 MHz LVDS clock in the smallest of those packages.
Tighter jitter budgets. As data rates rise, timing noise eats into link margin. The X-series differential clock oscillators, in production since January 2026, are specified at 40 fs typical phase jitter at 156.25 MHz and 30 fs at 312.5 MHz, with LV-PECL and LVDS outputs and supply options of 1.8 V, 2.5 V, and 3.3 V, the 1.8 V option applying to LVDS only. They suit vision processing, high-speed storage, and network interfaces in advanced automation equipment.
Compact and low-voltage subsystems. Teach pendants, wireless sensor nodes, and end-effector electronics work with little board area and low supply rails. The KC1210A series measures 1.25 x 1.05 x 0.5 mm, covers 9.6 MHz to 100 MHz with a CMOS output, operates from 0.8 V to 1.8 V, and draws 3.5 mA maximum at 50 MHz with a 0.9 V supply. Inclusive tolerance is ±25 ppm from -40°C to +85°C, or ±50 ppm with the range extended to +105°C.
Mobile robots and vehicle electronics. Automated guided vehicles and other equipment built to automotive practice can use the MC counterparts of these families, including the MC2016F, MC2016X, MC1210A, and MC1612A series, which keep the same output types and package footprints.

Kyocera AVX builds its crystal units and oscillator circuits in house, which is how it holds the inclusive tolerance figures quoted above. The company also publishes technical material on differential clock oscillators for high-speed and vehicle applications and on low-voltage, miniaturized clock oscillators, both useful when a design has to balance jitter, power, and board area.
Arrow supplies the K-series, F-series, X-series, and compact low-voltage clock oscillators with verified supply and lifecycle visibility for equipment that stays in production for years.