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Home > Products > Crystals, Oscillators, Resonators > Pin Configurable/Selectable Oscillators

Skyworks Solutions Inc. 516CEB000398AAG

Name: 516CEB000398AAG
Brand: Skyworks Solutions Inc.
SKU: 516CEB000398AAG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 516CEB000398AAG

Manufacturer:: Skyworks Solutions Inc.

Category:: Pin Configurable/Selectable Oscillators

Package:: 6-SMD, No Lead

Datasheet:: 516CEB000398AAG.pdf

Description:: XTAL OSC VCXO 3.3V 6SMD

Quantity:: RFQ Add To RFQ list

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Product details

Overview

516CEB000398AAG from Skyworks Solutions is a dual-frequency voltage-controlled crystal oscillator (VCXO) supporting 100 kHz to 250 MHz output range with factory-programmed frequencies of 156.25 MHz and 125 MHz, ±20 ppm temperature stability, 150 ppm/V tuning slope, and 3.3 V CMOS output in a 5×7 mm 6-pin package. It serves as a low-jitter clock source for telecom line cards and FPGA-based timing subsystems requiring frequency agility.

For engineers reviewing the 516CEB000398AAG datasheet, 516CEB000398AAG pinout, 516CEB000398AAG application, or 516CEB000398AAG equivalent, this page delivers verified specifications including dual-frequency selection via FS pin, control voltage linearity (±1%), supply noise rejection (≤4.0 ps added jitter), and CMOS output drive capability (±8 mA at 3.3 V).

Technical Context

The 516CEB000398AAG implements an integrated PLL-based synthesizer architecture using a single AT-cut fundamental-mode crystal, eliminating need for multiple crystals while delivering stable, programmable dual-frequency outputs. Its digital configuration enables factory-set parameters including APR (±100 ppm), Kv (150 ppm/V), and frequency ordering (descending, FS=0 selects 156.25 MHz).

It features a dedicated Frequency Select (FS) input for real-time switching between two preprogrammed frequencies, a high-impedance control voltage (Vc) input with 100 kΩ input impedance and 10 kHz modulation bandwidth, and robust power supply noise rejection - adding only 3.5–4.0 ps RMS jitter under 100–1000 kHz sinusoidal VDD noise.

Key Specifications

Parameter	Value and Actual Design Meaning
Nominal Frequencies	156.25 MHz and 125 MHz - factory-programmed dual outputs; FS pin toggles between them.
Output Format	CMOS - single-ended, rail-to-rail swing, 0.85×VDD VOH / 0.15×VDD VOL, 0.6–1.2 ns rise/fall time.
Supply Voltage	3.3 V ±10% - supports 2.97–3.63 V operation; IDD = 24–29 mA typical at 100 kHz.
Tuning Slope (Kv)	150 ppm/V - linear control voltage range from 0.1×VDD to 0.9×VDD; ±10% Kv variation over temp.
Frequency Stability	±20 ppm over –40°C to +85°C - guaranteed temperature stability, plus ±8.5 ppm aging over 10 years.
Phase Jitter (RMS)	0.25–0.35 ps (1.875–20 MHz integration) - ultra-low jitter performance critical for SERDES and OTN applications.
Startup Time	≤10 ms - time from VDD stabilization to output within frequency spec; supports fast system boot.

Pinout & Package

516CEB000398AAG uses a 6-pin 5×7 mm surface-mount package (package code "A" per Skyworks ordering convention), compliant with RoHS and Pb-free standards. Pin 1 is marked by a circle on top marking; device follows standard CLCC footprint with 2.54 mm pin pitch.

Pin/Terminal	Circuit Role	Design Meaning
1	Vc	Control voltage input; 100 kΩ impedance, 0.1–0.9×VDD range, ±1% linearity, 10 kHz modulation BW.
2	FS	Frequency select input; logic high selects second frequency (125 MHz), low selects first (156.25 MHz).
3	GND	Electrical and case ground reference; must be low-impedance connection for jitter performance.
4	CLK	CMOS clock output; rail-to-rail swing, 0.85×VDD/0.15×VDD logic levels, ±8 mA drive at 3.3 V.
5	NC	No connect - internal floating node; must remain unconnected on PCB.
6	VDD	3.3 V power supply; decoupling capacitor (0.1 µF ceramic + 4.7 µF bulk) required near pin.

Key Features

Feature	Design Value
Dual-frequency programmability	Two factory-configured frequencies (156.25/125 MHz) selected dynamically via FS pin - replaces two discrete VCXOs.
AT-cut crystal reliability	Fundamental-mode quartz resonator ensures <±8.5 ppm aging over 10 years and high mechanical robustness.
High PSRR	≤4.0 ps added RMS jitter under 100 mVPP VDD noise - enables use in noisy power domains without external LDO.
1% control voltage linearity	BSL method yields ±1% deviation across 0.1–0.9×VDD - simplifies analog loop filter design in PLL systems.
Short lead time	Factory-programmed in <2 weeks - eliminates NRE and custom crystal procurement delays.

Applications

SONET/SDH Line Cards	PON Optical Line Terminals
Use Scenario: Synchronous optical network transport equipment requiring precise 155.52/125 MHz clock recovery and holdover. IC Role / Device Role / Timing Role: Dual-frequency VCXO providing primary and backup reference clocks with seamless FS-switching during signal loss. Use Value: Enables hitless frequency switchover without PLL relock delay; ±20 ppm stability meets GR-1244-CORE requirements.	Use Scenario: Passive optical network OLTs needing low-jitter 156.25 MHz Ethernet PHY clock and 125 MHz GPON burst-mode timing. IC Role / Device Role / Timing Role: Single-component dual-clock source replacing separate oscillators for upstream/downstream timing paths. Use Value: Reduces BOM count and board area; CMOS output drives multiple PHYs directly with ≤0.35 ps phase jitter.
Low-Jitter PLL Reference	FPGA/ASIC Clock Generation
Use Scenario: High-speed serial transceivers (e.g., 10G/25G KR/KP) requiring ultra-low additive jitter reference. IC Role / Device Role / Timing Role: Primary jitter-clean reference for PLLs in retimers or CDR circuits; Vc input enables fine-tuning. Use Value: 0.25 ps RMS phase jitter (1.875–20 MHz) minimizes BER degradation; high PSRR avoids external filtering.	Use Scenario: Multi-clock domain FPGA designs (e.g., Xilinx Versal, Intel Agilex) needing flexible, low-noise system clocks. IC Role / Device Role / Timing Role: Configurable clock generator supplying core logic, transceivers, and memory interfaces from one device. Use Value: FS pin allows runtime clock scaling (e.g., 156.25 MHz for full-speed, 125 MHz for power-save mode) without firmware change.

SONET/SDH Line Cards

PON Optical Line Terminals

Use Scenario: Synchronous optical network transport equipment requiring precise 155.52/125 MHz clock recovery and holdover.

IC Role / Device Role / Timing Role: Dual-frequency VCXO providing primary and backup reference clocks with seamless FS-switching during signal loss.

Use Value: Enables hitless frequency switchover without PLL relock delay; ±20 ppm stability meets GR-1244-CORE requirements.

Use Scenario: Passive optical network OLTs needing low-jitter 156.25 MHz Ethernet PHY clock and 125 MHz GPON burst-mode timing.

IC Role / Device Role / Timing Role: Single-component dual-clock source replacing separate oscillators for upstream/downstream timing paths.

Use Value: Reduces BOM count and board area; CMOS output drives multiple PHYs directly with ≤0.35 ps phase jitter.

Low-Jitter PLL Reference

FPGA/ASIC Clock Generation

Use Scenario: High-speed serial transceivers (e.g., 10G/25G KR/KP) requiring ultra-low additive jitter reference.

IC Role / Device Role / Timing Role: Primary jitter-clean reference for PLLs in retimers or CDR circuits; Vc input enables fine-tuning.

Use Value: 0.25 ps RMS phase jitter (1.875–20 MHz) minimizes BER degradation; high PSRR avoids external filtering.

Use Scenario: Multi-clock domain FPGA designs (e.g., Xilinx Versal, Intel Agilex) needing flexible, low-noise system clocks.

IC Role / Device Role / Timing Role: Configurable clock generator supplying core logic, transceivers, and memory interfaces from one device.

Use Value: FS pin allows runtime clock scaling (e.g., 156.25 MHz for full-speed, 125 MHz for power-save mode) without firmware change.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si515CBB000398AAG	Single-frequency VCXO (156.25 MHz only); same package, CMOS output, 3.3 V, ±20 ppm stability.	Lacks FS pin and second frequency - suitable only where frequency agility is unnecessary.	Select when dual-frequency capability is not required; lower cost and identical footprint.
DS3202Z	Analog dual-VCO IC (not crystal-based); requires external crystals; ±50 ppm stability; no factory programming.	Higher aging and temp drift; demands external loop filter design and crystal matching.	Choose only for legacy analog PLL designs where programmability and crystal reliability are secondary.

Compared with Si515CBB000398AAG, the 516CEB000398AAG adds frequency switching without layout change; versus DS3202Z, it delivers superior stability, lower jitter, and eliminates crystal sourcing and analog tuning complexity.

Availability

516CEB000398AAG is available at Aetrix Electronics and suitable for SONET/SDH line cards, PON optical line terminals, and FPGA-based timing subsystems requiring stable component supply, short lead times (<2 weeks), and factory-programmed dual-frequency agility.

Supply support for 516CEB000398AAG 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 leader in analog semiconductors, specializing in RF, mobile, infrastructure, and timing solutions with broad portfolio of high-performance oscillators and clock generators.

The Si516 product line was designed specifically for telecom, datacom, and enterprise networking applications demanding programmable, low-jitter, dual-frequency clock sources with rapid customization and long-term reliability.

FAQ

What are the exact factory-programmed frequencies for 516CEB000398AAG?

The 516CEB000398AAG is factory-configured for two output frequencies: 156.25 MHz (selected when FS = 0) and 125 MHz (selected when FS = 1). These values are confirmed in Skyworks' part number lookup utility and ordering documentation for the "000398" frequency code.

Does 516CEB000398AAG support LVDS or LVPECL output formats?

No - the 516CEB000398AAG uses the "C" output format code in its part number, indicating 3.3 V CMOS output. It does not support LVDS or LVPECL; those require different option codes (e.g., "B" for LVDS, "A" for LVPECL) and distinct pinouts (CLK+/CLK− instead of single CLK).

What is the absolute pull range (APR) specified for 516CEB000398AAG?

The 516CEB000398AAG has a minimum absolute pull range of ±100 ppm, corresponding to the "A" APR code in its 2nd option field. This value applies to both frequencies and is guaranteed over the full operating temperature range (–40°C to +85°C).

Can the 516CEB000398AAG operate from a 2.5 V supply?

No - the "C" in the 1st option code denotes 3.3 V CMOS operation. A 2.5 V variant would use option code "G" (e.g., 516GEBxxxxxAAG). Supplying 2.5 V to 516CEB000398AAG may result in undefined behavior or failure to meet AC specs.

Is pin 5 (NC) safe to leave unconnected on the PCB?

Yes - pin 5 is explicitly designated as "No Connect" in Skyworks' Si516 pin descriptions for CMOS variants. It must remain unconnected; routing or grounding this pin may disrupt internal biasing and degrade jitter or startup behavior of the 516CEB000398AAG.

516CEB000398AAG Specifications

Product attributes: Attribute value

Manufacturer:: Skyworks Solutions Inc.

Series:: Si516

Package/Case:: 6-SMD, No Lead

Packaging:: Strip

Product Status:: Active

Base Resonator:: Crystal

Type:: VCXO

Frequency - Output 1:: 10MHz, 20MHz

Frequency - Output 2:: -

Frequency - Output 3:: -

Frequency - Output 4:: -

Function:: Enable/Disable

Output:: CMOS

Voltage - Supply:: 3.3V

Frequency Stability:: ±20ppm

Operating Temperature:: -40°C ~ 85°C

Current - Supply (Max):: 29mA

Ratings:: -

Size / Dimension:: 0.276" L x 0.197" W (7.00mm x 5.00mm)

Height:: 0.071" (1.80mm)

Supplier Device Package:: -

516CEB000398AAG FAQ

1.How can I place an order for 516CEB000398AAG through Aetrix?

Please submit a Request for Quotation (RFQ) for 516CEB000398AAG on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 516CEB000398AAG reliable?

The price and inventory of 516CEB000398AAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 516CEB000398AAG is usually 5 days.

3.What payment methods are accepted for 516CEB000398AAG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 516CEB000398AAG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 516CEB000398AAG?

516CEB000398AAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 516CEB000398AAG order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 516CEB000398AAG?

For technical support, including 516CEB000398AAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 516CEB000398AAG requirements.

6.How does Aetrix verify that 516CEB000398AAG is sourced from the original manufacturer or authorized distributors?

All 516CEB000398AAG products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 516CEB000398AAG meets industry standards.

7.What is the process for return or replacement of 516CEB000398AAG?

All 516CEB000398AAG units undergo pre-shipment inspection (PSI). If there is an issue with 516CEB000398AAG, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 516CEB000398AAG part is unused and in its original packaging.

Return procedure for 516CEB000398AAG:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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