Skyworks Solutions Inc. 531BB100M000DG

Overview

531BB100M000DG from Skyworks Solutions is a factory-programmed, low-jitter crystal oscillator (XO) delivering 100.000 MHz differential LVDS output with ±20 ppm total frequency stability over –40 to +85 °C, 3.3 V supply, and industry-standard 5 × 7 mm 6-pin package. It employs third-generation DSPLL® synthesis for superior supply noise rejection and is used in FPGA clocking, SD/HD video timing, and network switch synchronization.

For engineers reviewing the 531BB100M000DG datasheet, 531BB100M000DG pinout, 531BB100M000DG application, or 531BB100M000DG equivalent, key selection criteria include its LVDS output compatibility, 0.36 ps RMS phase jitter (12 kHz–20 MHz), ±20 ppm total stability, and Si531-series OE-on-pin-1 configuration for tristate control in high-density PCB layouts.

Technical Context

The 531BB100M000DG implements Skyworks' third-generation DSPLL® architecture, synthesizing its 100 MHz output from a fixed internal crystal to eliminate frequency-specific resonator dependencies. This enables consistent aging performance (±3 ppm first-year drift) and eliminates custom crystal lead times.

It operates exclusively in LVDS mode with differential CLK+/CLK– outputs, uses an OE pin on pin 1 for active-high tristate control, and integrates a 17 kΩ internal pull-up resistor to VDD-enabling reliable power-up behavior without external biasing in communication and test equipment designs.

Key Specifications

Pinout & Package

531BB100M000DG uses the Si531-series 6-pin 5 × 7 mm surface-mount package with exposed pad (no thermal pad connection required). Pin 1 is OE (active-high), pins 4 and 5 are differential LVDS outputs (CLK+, CLK–), pin 3 is GND, and pin 6 is VDD. Pin 2 is no-connect.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar clock oscillator applications.

Compared with Si530BB100M000DG, the 531BB100M000DG offers optimized OE placement for compact routing, while AK2-100.000MHZ-EFE provides lower unit cost at the expense of DSPLL-based noise immunity and tighter stability-making 531BB100M000DG preferable for high-performance telecom and instrumentation designs.

Availability

531BB100M000DG is available at Aetrix Electronics and suitable for FPGA clock generation, SD/HD video timing, and networking infrastructure requiring stable component supply, guaranteed long-term availability, and full traceability from Skyworks wafer fabrication through final test.

Supply support for 531BB100M000DG 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 power management ICs for communications, automotive, and industrial markets.

The Si530/531 family is designed for high-reliability, low-jitter clock generation in systems demanding precise timing-especially where traditional crystal oscillators lack flexibility or stability, such as in multi-rate networking and broadcast video equipment.

FAQ

What output format and voltage does the 531BB100M000DG use?

The 531BB100M000DG is configured for LVDS output with a 3.3 V supply. Its differential CLK+/CLK– outputs meet ANSI TIA/EIA-644-A specifications: 1.125–1.275 V common-mode voltage and 0.5–0.9 VPP differential swing. The part number 'BB' explicitly denotes 3.3 V LVDS operation, and this configuration is factory-programmed-no external configuration is possible. The 531BB100M000DG does not support CMOS, LVPECL, or CML outputs.

Does the 531BB100M000DG support tristate functionality, and how is it controlled?

Yes, the 531BB100M000DG supports tristate via its OE (Output Enable) pin, which is located on pin 1 per the Si531-series pinout. OE is active-high: applying a logic high (≥0.75 × VDD) enables the LVDS outputs, while a logic low disables them into high-impedance state. An internal 17 kΩ pull-up resistor to VDD ensures the output remains enabled at power-up unless actively driven low-critical for predictable system boot behavior in networking hardware using the 531BB100M000DG.

What is the phase jitter performance of the 531BB100M000DG, and under what conditions is it specified?

The 531BB100M000DG delivers 0.36 ps RMS phase jitter measured over the 12 kHz to 20 MHz offset range, compliant with OC-48 SONET standards. This value is specified for its nominal 100 MHz output frequency and applies to LVDS operation under recommended conditions: VDD = 3.3 V, TA = 25 °C, and proper 100 Ω differential termination. The 531BB100M000DG achieves this performance using Skyworks' third-generation DSPLL® architecture, which inherently suppresses supply-induced jitter-making it suitable for noise-sensitive applications like high-speed serial data recovery.

How does the total frequency stability of the 531BB100M000DG break down across temperature, initial accuracy, and aging?

The 531BB100M000DG has a total frequency stability of ±31.5 ppm, composed of ±20 ppm temperature stability (over –40 to +85 °C), ±1.5 ppm initial accuracy (measured at +25 °C at shipment), and ±3 ppm aging over the first year. This breakdown is confirmed by Skyworks' ordering code 'BB', which selects the ±20 ppm temperature option. The 531BB100M000DG's DSPLL® architecture ensures aging remains bounded at ±10 ppm over 20 years-providing long-term timing predictability unmatched by SAW or basic XO alternatives.

Is the 531BB100M000DG pin-compatible with other Si530/531 variants, and what mechanical package does it use?

Yes, the 531BB100M000DG uses the industry-standard 5 × 7 mm, 6-pad surface-mount package with identical outline and land pattern as all Si530/531 devices-including the same 2.54 mm pin pitch and recommended IPC-7351-compliant PCB footprint. However, pin functional compatibility varies: the 531BB100M000DG places OE on pin 1 (Si531 configuration), whereas Si530 variants place OE on pin 2. Thus, while the 531BB100M000DG shares mechanical compatibility, electrical pin mapping differs from Si530-series parts-requiring verification before direct substitution.