Skyworks Solutions Inc. 533AA000108DGR

Overview

533AA000108DGR from Skyworks Solutions is a dual-frequency, factory-programmed crystal oscillator (XO) with DSPLL® synthesis, delivering two user-selectable output frequencies-644.53125 MHz and 693.48299 MHz-using a single internal fixed crystal. It operates at 3.3 V, supports LVPECL output, offers ±20 ppm total frequency stability over –40 to +85 °C, and targets high-speed serial link clocking in telecom and datacom systems.

For engineers reviewing the 533AA000108DGR datasheet, 533AA000108DGR pinout, 533AA000108DGR application, or 533AA000108DGR equivalent, key selection criteria include dual-frequency switching via FS pin, sub-0.4 ps RMS phase jitter (12 kHz–20 MHz), LVPECL drive capability, 5×7 mm industry-standard package, and factory-configured temperature stability and supply voltage.

Technical Context

The 533AA000108DGR implements third-generation DSPLL® circuitry to synthesize two precise output frequencies from a single fixed-frequency crystal reference, eliminating need for multiple crystals or external PLLs. Its architecture integrates a low-noise VCO, fractional-N divider, and digital loop filter optimized for jitter suppression.

Frequency selection is controlled by the FS pin (pin 2), enabling instantaneous switching between f₀ = 644.53125 MHz and f₁ = 693.48299 MHz with ≤10 ms settling time. Output enable (OE, pin 1) places CLK± outputs in high-impedance state, supporting power-aware system synchronization.

Key Specifications

Pinout & Package

533AA000108DGR uses an industry-standard 6-pin, 5 × 7 mm surface-mount ceramic package with exposed thermal pad (not electrically connected). Pin 1 is marked by a dot; pins are arranged in single row with 2.54 mm pitch (pins 1–3 left-to-right, pins 6–4 right-to-left top view).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-frequency XO applications.

Compared with Si5342-D06884-GM, the 533AA000108DGR offers simpler integration and lower system-level jitter but lacks programmability; versus AK21E-644.53125M-T, it adds critical dual-frequency agility and superior phase noise-justifying its use where rate adaptation or redundancy is required.

Availability

533AA000108DGR is available at Aetrix Electronics and suitable for SONET/SDH line cards, 10G/25G Ethernet switches, and FPGA-based video processing systems requiring stable component supply, guaranteed long-term availability, and full traceability.

Supply support for 533AA000108DGR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and precision analog products.

The Si533 family is designed specifically for high-reliability, low-jitter clock generation in communications infrastructure-emphasizing DSPLL-based frequency agility, factory configurability, and ruggedized packaging for telecom environments.

FAQ

What are the exact output frequencies programmed in the 533AA000108DGR?

The 533AA000108DGR is factory-programmed with two precise frequencies: 644.53125 MHz (selected when FS = 0) and 693.48299 MHz (selected when FS = 1). These values are confirmed in Skyworks' official ordering documentation for part number 533AA000108DGR and correspond to OC-192 and OTU3 line rates. Both frequencies are generated from the same internal DSPLL core and share identical jitter performance.

Does the 533AA000108DGR support CMOS output format?

No, the 533AA000108DGR does not support CMOS output. Per the part number coding convention, the "A" in position 4 indicates LVPECL output with 3.3 V supply and high-active OE/FS polarity. CMOS is only available on variants with option codes C, G, J, P, T, or V-and limited to ≤160 MHz. Using this part with CMOS loads would require external level translation and is not supported.

What is the maximum allowable supply voltage ripple for stable operation of the 533AA000108DGR?

The 533AA000108DGR specifies supply current of 111–121 mA (LVPECL, enabled) and incorporates DSPLL® supply noise rejection. While no explicit ripple limit is given, Skyworks recommends ≤30 mV_PP ripple at 100 kHz–100 MHz on the VDD rail-achieved using a 0.1 µF ceramic capacitor placed within 2 mm of pin 6 and a bulk 4.7 µF tantalum or polymer capacitor nearby. Exceeding this may degrade phase jitter beyond 0.4 ps RMS.

Can the 533AA000108DGR be used in automotive applications?

The 533AA000108DGR is qualified for industrial temperature range (–40 to +85 °C) and meets MIL-STD-883 mechanical reliability tests, but it is not AEC-Q200 qualified and lacks automotive-specific screening or extended temperature grades. Skyworks explicitly states its products are not intended for medical, lifesaving, or automotive safety-critical applications. For automotive use, consider the Si54x automotive-grade XO family instead.

How is the frequency select (FS) pin debounced to prevent spurious switching during power-up?

The FS pin of the 533AA000108DGR includes an internal 17 kΩ pullup resistor to VDD, ensuring default logic-high state after power-on reset. To prevent metastability or bounce, Skyworks recommends driving FS with a clean CMOS signal and adding a 100 pF capacitor to ground near the pin if routed through noisy areas. No external debounce circuitry is required-settling time after FS transition is guaranteed ≤10 ms per datasheet Table 2.