Skyworks Solutions Inc. SI5350A-B04997-GTR

Overview

SI5350A-B04997-GTR from Skyworks Solutions is a factory-programmed, pin-controlled CMOS clock generator delivering three independent output clocks (CLK0–CLK2) with exact frequency synthesis from 2.5 kHz to 200 MHz, 0 ppm error, <70 ps pk-pk period jitter, and spread spectrum support on all outputs. It replaces multiple crystals/XOs in audio/video processors, HDMI interfaces, and USB controllers using a single 25 or 27 MHz crystal reference.

For engineers reviewing the SI5350A-B04997-GTR datasheet, SI5350A-B04997-GTR pinout, SI5350A-B04997-GTR application, or SI5350A-B04997-GTR equivalent, key selection criteria include its 10-MSOP package, dual-frequency capability per output (F1_x/F2_x), glitchless frequency switching via FS_0/FS_1 pins, configurable output drive strength, and HCSL-compatible swing at 2.5 V VDDO.

Technical Context

The SI5350A-B04997-GTR implements a dual-PLL + eight fractional MultiSynth™ architecture-two PLLs (PLLA/PLLB) feeding up to eight independently programmable dividers-but this specific variant is configured for three outputs (CLK0–CLK2) in the 10-MSOP package. All outputs derive from PLLA, enabling spread spectrum modulation (±0.1% to ±1.5% center-spread or –0.1% to –2.5% down-spread at 30–33 kHz).

It uses a fixed 25 MHz or 27 MHz crystal (XA/XB), supports static phase offset, rise/fall time control, and separate core (VDD = 1.8/2.5/3.3 V) and output (VDDO = 1.8/2.5/3.3 V) supplies. Frequency select (FS_0/FS_1), output enable (OEB_0/1/2), power-down (PDN), and spread-spectrum enable (SSEN) pins are user-configurable per design.

Key Specifications

Pinout & Package

SI5350A-B04997-GTR is packaged in a 10-pin MSOP (3.0 × 4.9 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions align with the Si5350A-B 10-MSOP configuration per Skyworks datasheet Rev. 1.2, Section 7.3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SI5350A-B04997-GTR, Si5350A-B-GT demands post-silicon programming and startup delay, while Si5351A-B-GT introduces I²C dependency and lacks guaranteed 0 ppm factory-trimmed synthesis-making SI5350A-B04997-GTR optimal for cost-sensitive, turnkey clock replacement in volume production.

Availability

SI5350A-B04997-GTR is available at Aetrix Electronics and suitable for HDMI timing, USB 2.0 host clocking, and Ethernet PHY reference applications requiring stable component supply, factory-trimmed frequency accuracy, and zero-configuration deployment.

Supply support for SI5350A-B04997-GTR 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 ICs.

The Si5350A-B product line delivers factory-programmable, low-jitter clock generators for cost-sensitive consumer, computing, and communications systems where crystal replacement and EMI reduction are critical design goals.

FAQ

What is the factory-programmed frequency configuration of the SI5350A-B04997-GTR?

The SI5350A-B04997-GTR is preconfigured with a specific multi-output frequency plan identified by the "B04997" suffix. Per Skyworks documentation, this corresponds to a validated 3-output configuration optimized for audio/video timing-typically including 74.25 MHz, 24.576 MHz, and 48 MHz outputs-but exact values are defined in the ClockBuilder Pro project tied to this part number and must be verified in the official configuration report shipped with the device.

Does the SI5350A-B04997-GTR support HCSL-compatible outputs?

Yes, the SI5350A-B04997-GTR supports HCSL-compatible swing on its outputs when VDDO is set to 2.5 V and appropriate external termination (511 Ω pull-down, 240 Ω AC-coupled) is applied per output pair. This capability is confirmed for the 10-MSOP package in Skyworks Application Note AN551 and Figure 3 of the Si5350A-B datasheet Rev. 1.2.

Can the SI5350A-B04997-GTR generate frequencies above 112.5 MHz?

Yes, the SI5350A-B04997-GTR can generate frequencies up to 200 MHz, but only two unique frequencies above 112.5 MHz may be active simultaneously. For example, it may output 125 MHz on CLK0 and 130 MHz on CLK1, but adding a third distinct frequency >112.5 MHz (e.g., 150 MHz on CLK2) violates specification and is not supported.

What crystal frequency does the SI5350A-B04997-GTR require?

The SI5350A-B04997-GTR operates exclusively with a 25 MHz or 27 MHz fundamental-mode AT-cut crystal connected across XA and XB pins. The device's internal oscillator is designed for these two frequencies only; other crystal values are not supported, and no external clock input mode is enabled in this factory-programmed variant.

Is spread spectrum available on all outputs of the SI5350A-B04997-GTR?

Yes, spread spectrum is available on all three outputs (CLK0–CLK2) of the SI5350A-B04997-GTR because they are all sourced from PLLA. Spread spectrum is not supported on PLLB-sourced outputs-but PLLB is unused in this 3-output 10-MSOP configuration, so full spread spectrum capability applies across all enabled clocks.