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XK21 Datasheet(PDF) 1 Page - Renesas Technology Corp |
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XK21 Datasheet(HTML) 1 Page - Renesas Technology Corp |
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1 / 29 page  R31DS0145EU0116 Rev. 1.16 Page 1 Sep 24, 2025 © 2023-2025 Renesas Electronics Datasheet Description The XK devices are a second-generation follow-on to the XF ProXO high-performance oscillators. The devices are often referred to as ProXO II. The XK family of devices uses internal regulators to provide excellent PSNR characteristics. The devices are offered in a range of industry- standard package footprints. Each device can be factory programmed with up to three frequencies and/or output types that are selected by the 3-level FS pin. A list of standard frequencies is provided in Table 27. Applications ▪ 10G to 800G Ethernet ▪ 100G to 400G OTN ▪ 3G to 24G SDI broadcast video ▪ Servers, switches, storage, accelerators, NICs, HBAs Features ▪ 55fs RMS typical phase jitter (12kHz to 20MHz) at 156.25MHz ▪ 50MHz to 1250MHz output frequency ▪ Package options: • 1.80 × 1.40 × 0.85 mm (1.60 × 1.20 mm footprint compatible) – 6-LGA (LTV6D1) • 2.00 × 1.60 × 0.85 mm – 6-LGA (LLV6D1) • 2.50 × 2.00 × 0.70 mm – 6-LGA (LTT6D1) • 3.20 × 2.50 × 0.70 mm – 6-LGA (LLT6D1) ▪ Supply voltage options: 1.8V, 2.5V, 3.3V ▪ Output types: • LVDS, CML, and HCSL (1.8V, 2.5V, 3.3V) • LVPECL (3.3V only) • LVCMOS differential (1.8V only) ▪ Total stability ±50ppm (including temperature, power supply, and aging) ▪ Operating temperature: -40°C to +85°C (all operating voltages) -40°C to +105°C (1.8V, 3.2 × 2.5 mm package only) Figure 1. Block Diagram Power Supply Regulation PLL OUT0 OUT0b OSC OE NVM Control FS XK Ultra-low Phase Noise Quartz-based PLL Oscillator |
Similar Part No. - XK21 |
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Similar Description - XK21 |
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