For high-end audio nothing is more important than ensuring purity of signal.

Perturbations, phase-noise/jitter and poor locking ability can all interrupt the smooth flow of signal between audio modules.

Golledge’s range of products recommended for high-end audio avoid spurious resonances by using only the highest quality quartz and mounting techniques. This helps to decrease the likelihood of unwanted perturbations affecting your tuning curves or control loops.

We also offer VCXOs with wide pullability, ensuring ease of locking between audio modules.

All of our audio-recommended products also feature fantastically low jitter specifications, meaning you don’t need to worry any longer about introducing noise into the output of your DAC. We also offer ultralow phase noise OCXOs for those wanting the ultimate in clean audio reproduction.

Our expert in-house engineering department can help with any custom requirements, testing and specifications you require, if you need a custom part please get in touch, we'd love to help.

Crystals for Audio

Perfect for pairing with Bluetooth audio modules, alternatively for high-end applications full noise control can be delivered through custom-built VCXOs based on a high performance crystal.

Crystals for Audio Applications

HC49

Standard Crystal


The HC49 industry-standard leaded crystal is available at high frequencies from 1.0MHz ~ 160MHz. Highly configurable, HC49 is available in a choice of operating temperature ranges, temperature stabilities, calibration tolerances and circuit conditions. Find more information and configure your product here.

  • 1.0 ~ 160MHz
  • Industry standard HC49 case
  • Fundamental mode available up to 40.0MHz
  • Tight specifications available
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GSX-331

3.2 x 2.5mm High Frequency SM Crystal with Tight Specifications


The GSX-331 miniature surface mount crystal is available over wide available frequency range from 10.0 ~ 125MHz. GSX-331 features a miniature package measuring 3.2 x 2.5 x 0.8mm, and is available in a choice of operating temperature ranges and with a range of temperature stabilities. Find more information and configure your product here.

  • 10.0 ~ 125MHz
  • Metal lid can be grounded to minimise EMI
  • Seam sealed for excellent stability
  • Tight specifications available
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GSX49-4

4.3mm Low Profile SM Crystal


The highly configurable, low profile GSX49-4 crystal is available at frequencies between 3.18 ~ 90.0MHz and features a range of calibration tolerance, temperature stability, operating temperature range, and circuit condition options. One of our most competitive crystals, you can find full product specifications and configure your product here.

  • 3.18 ~ 90.0MHz
  • Industry standard HC49 footprint
  • Low profile case
  • Fundamental mode available up to 50.0MHz
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GSX-433

4.0 x 2.5mm SM Crystal for Bluetooth/Wireless


The GSX-433 crystal is available at frequencies between 12.0 ~ 44.0MHz and features a range of excellent frequency tolerance and temperature stability options. Find full product specifications and configure your product here.

  • 12.0 ~ 44.0MHz
  • Good frequency perturbation
  • Metal lid can be grounded to minimise EMI
  • Seam sealed for excellent long-term stability
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GSX-1A

Two Pad SM Crystal with Ceramic Package


The GSX-1A two-pad fully ceramic SM package crystal, is available in a variety of oscillation modes, including fundamental up to 50.0MHz. Available at frequencies from 5.0-84.0MHz, and with a range of temperature stabilities and operating temperature ranges up to -40 to +85°C.

  • 5.0 ~ 84.0MHz
  • Fundamental mode up to 50.0MHz
  • Large stocks of standard frequencies
  • Alternative terminal configurations
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Oscillators for High-End Audio Applications

Designed from the start to ensure a low phase noise and reduce clocking artefacts, our audio-recommended oscillators ensure the very best in clock performance. Highly recommended for in-built DAC applications.

Oscillators for Audio Applications

GXO-3306G

3225 Package Ultra-Low Jitter 1.8V Oscillator


Featuring ultra-low phase jitter of just 0.04ps typical, the GXO-3306G also has miniature 3.2 x 2.5mm package, requires 1.8V supply voltage, and features superbly low phase noise characteristics.

  • 20.0 ~ 50.0MHz
  • Excellent phase noise & jitter characteristics
  • Enable / disable tristate function
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GXO-3306L

3225 Package Ultra-Low Jitter 3.3V Oscillator


Featuring ultra-low phase jitter of just 0.04ps typical, the GXO-3306L also has ultra-miniature 3.2 x 2.5mm package, requires 3.3V supply voltage, and features superbly low phase noise characteristics.

  • 20.0 ~ 50.0MHz
  • Excellent phase noise & jitter characteristics
  • Custom frequencies and specifications available
  • Enable / disable tristate function
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GXO-7506G

7550 Package Ultra-Low Jitter 1.8V Oscillator


Featuring ultra-low phase jitter of just 0.04ps typical, the GXO-7506G also has surface mount 7.5 x 5.0mm package, requires 1.8V supply voltage, and features superbly low phase noise characteristics.

  • 12.0 ~ 50.0MHz
  • Excellent jitter & phase noise characteristics
  • Enable / disable tristate function
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GXO-7506L

7550 Package Ultra-Low Jitter 3.3V Oscillator


Featuring ultra-low phase jitter of just 0.04ps typical, the GXO-7506L also has surface mount 7.5 x 5.0mm package, requires 3.3V supply voltage, and features superbly low phase noise characteristics.

  • 12.0 ~ 50.0MHz
  • Excellent jitter & phase noise characteristics
  • Enable / disable tristate function
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GXO-5301G

Miniature 1.8V Low Current Consumption Oscillator


The competitively priced GXO-5301G 1.8V oscillator is available over wide frequency range of 0.5~156.25MHz, and features low current consumption and fast start up time.

  • 500kHz ~ 156.25MHz
  • Low current consumption
  • Enable / disable tristate function
  • Competitive pricing
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GXO-5301L

Miniature 2.5V-3.3V Low Current Consumption Oscillator


The competitively priced GXO-5301L oscillator is available over wide frequency range of 0.5~156.25MHz, and features low current consumption and fast start up time. This oscillator is operable over any supply voltage within the 2.5-3.3V range.

  • 500kHz ~ 156.25MHz
  • Low current consumption
  • Enable / disable tristate function
  • Competitive pricing
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GXO-7506J

7550 Package Ultra-Low Jitter 2.5V Oscillator


Featuring ultra-low phase jitter of just 0.04ps typical, the GXO-7506J also has surface mount 7.5 x 5.0mm package, requires 2.5V supply voltage, and features superbly low phase noise characteristics.

  • 12.0 ~ 50.0MHz
  • Excellent jitter & phase noise characteristics
  • Enable / disable tristate function
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GXO-7531

3.3V CMOS Oscillator


Available at low and very high frequencies of 0.5 ~ 200MHz, the GXO-7531 is a versatile crystal oscillator with excellent frequency stability and small industry-standard package. 

  • 500kHz ~ 200MHz
  • Standard frequencies held in stock
  • Enable/disable tristate function
  • Power saving option
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GXO-U108L

3.3V 7x5mm Oscillator with Power Saving


Operating at 3.3V supply voltage the GXO-U108L offers the engineer tight stabilities of up to ±20pmm with frequencies available up to 170MHz. Built-in power saving ensures the required supply current remains low, even at high frequencies and industrial operating temperature range of -40 to +85ºC is available. The GXO-U108L comes encased within a robust 7x5mm ceramic package with metal lid.

  • 12.0kHz ~ 170MHz
  • 3.3V Supply voltage
  • Low power consumption with in-built power-saving function
  • Standard frequencies held in stock
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GXO-U108H

5V 7x5mm Oscillator with 50pF CMOS Driving Ability


The GXO-U108H features industry-standard 7.5 x 5.0mm ceramic package with metal lid and gold plated pads as standard. This 5.0V oscillator is available over a wide frequency range of 1.8~80.0MHz and features enable/disable functionality and high 50pF CMOS driving ability.

  • 1.8 ~ 80MHz
  • Standard frequencies held in stock
  • High drive capability - up to 50pF
  • Enable / disable tristate function
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GXO-U108P

5V 7x5mm Oscillator with Power Saving


The GXO-U108P features industry-standard 7.5 x 5.0mm ceramic package with metal lid and gold plated pads as standard. This 5.0V oscillator is available over a wide frequency range of 12.0kHz~170MHz and features enable/disable functionality with power saving.

  • 12.0kHz ~ 170MHz
  • Standard frequencies held in stock
  • High drive capability - up to 50pF
  • Enable / disable tristate function
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Voltage Controlled Oscillators for Audio 

Combining excellent jitter and perturbation reduction with wide pullability specifications, our VCXOs ensure excellent locking performance between audio modules.

VCXOs for Audio Applications

GVXO-753D

3.3V 4-pad Cost Effective VCXO


The GVXO-753 provides a highly cost effective 3.3V VCXO solution. This 4-pad voltage controlled oscillator offers a range of frequency pullability and frequency stability options and is available with industrial operating temperature range of -40 to +85°C. 

  • 1.5MHz ~ 54.0MHz
  • Low cost for volume applications
  • Choice of stability and pullability oioptions
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GVXO-753F

3.3V 6-pad VCXO for Volume Applications


Providing a highly cost effective 3.3V VCXO solution for volume applications, the 6-pad GVXO-753F also features in-built enable/disable tristate functionality. The GVXO-753F also allows a choice of frequency stability and pullability options and is available with industrial operating temperature range of -40 to +85°C making it an ideal VCXO solution for a range of high volume applications.

  • 1.5MHz ~ 54.0MHz
  • Low cost for volume applications
  • Choice of pullability and stability options
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Oven Controlled Oscillators (OCXOs) for High-End Audio Applications

For the ultimate in jitter reduction, suitable for new designs and for system upgrade applications.

OCXOs for Audio

HCD331

5V OCXO with CMOS Output


The HCD331 OCXO with CMOS output features low profile package and tight temperature stability as good as ±20ppb. The HCD331 is available with supply voltage 5.0V at frequencies from 13.0 ~ 20.0MHz.

  • 13.0 ~ 20.0MHz
  • Temperature stability down to 20ppb
  • Single 5V oven & oscillator supply
  • Low height compact package
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SCOCXOHSV

5V Sine Output OCXO


The SCOCXOHSV high frequency fundamental mode oven controlled oscillator features sine wave output and excellent phase noise performance, and is available with supply voltage 5.0V at frequencies from 10.0 ~ 120MHz.

  • 10.0 ~ 120MHz
  • Excellent phase noise performance @ 100MHz
  • -160dBc noise floor @ 10.0MHz
  • Fundamental mode frequencies up to 120MHz
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SCOCXOHSW

3.3V OCXO Sine Output


Available with supply voltage 3.3V at frequencies from 10.0 ~ 120MHz, the SCOCXOHSW high frequency fundamental mode oven controlled oscillator features sine output and excellent phase noise performance.

  • 10.0 ~ 120MHz
  • Excellent phase noise performance @ 100MHz
  • -160dBc noise floor @ 10.0MHz
  • Fundamental mode frequencies up to 120MHz
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Golledge uses in-house engineering expertise to reduce your time to market

Our experience in serving the audio industry means we are able to offer specialist testing and product engineering to ensure our customers get exactly what they need, and reduce the length of time our customers spend sourcing custom-requirements.

This meant that when a team of top audio engineers approached us looking for some very specific VCXO requirements we were able to help. The engineering team were looking for the minimum of perturbations, maximum pulling range, and low jitter, and we were able to create a custom suite of testing and temperature cycling to ensure every VCXO they receive offers the cleanest clock signal for their DAC product, a signal highly prized by their audiophile customers.

Example reference designs supporting audio over bluetooth

Golledge components are approved within a number of reference designs from industry chip manufacturers including:

  • Golledge part number MP05322, a 104.0MHz crystal approved by Qualcomm Technologies International©
  • Golledge part number MP06513, a 16.0MHz crystal approved by Nordic Semiconductor©
  • Golledge part number MP05670, a 16.0MHz crystal approved by CSR (now Qualcomm Technologies International©) for their CSR101x series

We offer free samples for registered designers so if you have a question about a Golledge part that is included within a specific reference design, or would like to include us in your next one please get in touch with our sales team here.