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Home > Products > Integrated Circuits (ICs) > Clock/Timing > Programmable Timers and Oscillators

Renesas 8N3QV01FG-0055CDI8

Name: 8N3QV01FG-0055CDI8
Brand: Renesas
SKU: 8N3QV01FG-0055CDI8
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 8N3QV01FG-0055CDI8

Manufacturer:: Renesas

Category:: Programmable Timers and Oscillators

Package:: 10-CLCC

Datasheet:: 8N3QV01FG-0055CDI8.pdf

Description:: IC OSC VCXO QD FREQ 10CLCC

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Product details

Overview

8N3QV01FG-0055CDI8 from Renesas Electronics is a quad-frequency programmable VCXO using fourth-generation FemtoClock® NG technology, delivering LVPECL differential output (15.476–866.67 MHz and 975–1300 MHz), ±4.5 to ±754.5 ppm absolute pull range, and 0.487 ps RMS phase jitter (12 kHz–20 MHz) at 156.25 MHz. It operates from 2.5 V or 3.3 V supply across –40°C to +85°C and serves as a precision clock source in wireless infrastructure baseband timing.

For engineers reviewing the 8N3QV01FG-0055CDI8 datasheet, 8N3QV01FG-0055CDI8 pinout, 8N3QV01FG-0055CDI8 application, or 8N3QV01FG-0055CDI8 equivalent, this page provides verified technical context, I²C-programmable frequency synthesis details, LVPECL termination guidance, and validated alternative options for telecom clocking systems requiring stable, low-jitter, multi-frequency VCXO solutions.

Technical Context

The 8N3QV01FG-0055CDI8 integrates a 114.285 MHz third-overtone crystal oscillator driving a fractional-N PLL with 7-bit integer (MINT) and 18-bit fractional (MFRAC) feedback dividers, enabling sub-Hz frequency resolution (435.9 Hz ÷ N). Its VCO operates at 1950–2600 MHz, followed by a 7-bit post-divider (N = 2–126) and 2-bit pre-divider (P).

Four independent PLL configuration registers (P₀–P₃, MINT₀–MINT₃, MFRAC₀–MFRAC₃, N₀–N₃) are selected at power-up via FSEL0/FSEL1 pins and reprogrammable over I²C. The device supports volatile register updates without reset, with <470 µs frequency settling after FSEL change and 20 ms startup time.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Frequency Range	15.476–866.67 MHz and 975–1300 MHz - covers Ethernet, CPRI, OTU, and SerDes reference clocks.
RMS Phase Jitter (12 kHz–20 MHz)	0.487 ps typical at 156.25 MHz - meets OC-192/SONET and 10G/25G Ethernet jitter budgets.
Absolute Pull Range (APR)	Programmable ±4.5 to ±754.5 ppm - enables fine-tuning for network synchronization (e.g., IEEE 1588, SyncE).
Supply Voltage	2.5 V or 3.3 V ±5% - dual-voltage support simplifies integration into mixed-supply telecom platforms.
Operating Temperature	–40°C to +85°C - qualified for industrial-grade wireless infrastructure and carrier-grade networking equipment.
Output Interface	LVPECL differential (Q/nQ) - provides robust 50 Ω-terminated signaling with 0.55–1.0 Vpp swing and <425 ps rise/fall time.
Control Interface	I²C (SCLK/SDATA) + dual LVCMOS/LVTTL FSEL pins - enables both factory-default boot and field reprogramming.

Pinout & Package

8N3QV01FG-0055CDI8 uses a RoHS-compliant 10-lead ceramic CLCC package (5 mm × 7 mm × 1.55 mm, CD code), with 2.54 mm pitch and metallized bottom pad for thermal conduction. Pin 1 is marked by a dot; top view orientation follows JEDEC standard.

Pin/Terminal	Circuit Role	Design Meaning
1 (VC)	VCXO control voltage input	Analog tuning port; gain programmable (7.57–477.27 ppm/V) via ADC_GAIN[5:0] register for precise APR calibration.
2 (OE)	Output enable (LVCMOS/LVTTL)	Asynchronous active-high control; drives Q/nQ into high-Z when low - enables dynamic clock gating in power-sensitive systems.
3 (VEE)	Negative supply rail	Ground reference for LVPECL outputs; must be connected to system ground with low-inductance path to minimize jitter.
4 (FSEL0), 5 (FSEL1)	Default frequency select inputs	LVCMOS/LVTTL inputs with internal pulldowns; select one of four factory-programmed PLL configurations at power-up.
6 (Q), 7 (nQ)	Differential LVPECL clock outputs	Low-impedance emitter-follower pair; require 50 Ω termination to VCC–2 V (3.3 V) or ground (2.5 V) per Renesas layout guidelines.
8 (VCC)	Positive supply rail	2.5 V or 3.3 V main supply; decoupling (0.1 µF + 10 µF) required adjacent to pin to suppress supply-induced phase noise.
9 (SDATA)	I²C bidirectional data line	Open-drain output / CMOS input; requires external pullup (typically 1–10 kΩ) to VCC for I²C communication and register read/write.
10 (SCLK)	I²C clock input	LVTTL-compatible clock input; max 400 kHz standard-mode I²C - used to configure APR, M/N/P dividers, and ADC polarity/gain.

Key Features

Feature	Design Value
Fourth-generation FemtoClock® NG PLL architecture	Enables ultra-low phase noise via high-frequency VCO (1950–2600 MHz) and delta-sigma fractional-N synthesis with noise shaping.
Quad default frequency selection	FSEL0/FSEL1 pins provide hardware-selectable boot frequencies - eliminates need for boot-time I²C initialization in time-critical systems.
Volatile I²C programming of all PLL registers	Allows field updates to P/M/N dividers, APR, and ADC settings without device replacement - supports multi-standard reconfiguration (e.g., 10G/25G/100G).
Programmable oscillator gain (KV)	ADC_GAIN[5:0] sets KV from 7.57 to 477.27 ppm/V - enables optimization of loop bandwidth and stability for specific PLL filter designs.
LVPECL output with controlled edge rates	Rise/fall time 100–425 ps and duty cycle 45–55% - ensures clean signal integrity on high-speed backplanes and FR4 traces up to 15 GHz fundamental.

Applications

Wireless Base Station Timing	Optical Transport Network (OTN)
Use Scenario: Synchronizing FPGA-based digital front-end (DFE) and analog front-end (AFE) in massive MIMO 5G NR base stations. IC Role / Device Role / Timing Role: Primary VCXO providing low-jitter reference for ADC/DAC sampling clocks and JESD204B serializer/deserializer links. Use Value: 0.487 ps RMS jitter at 156.25 MHz ensures <65 dB SNR in 16-bit RF DACs; quad-frequency capability supports multi-band carrier aggregation without external switching.	Use Scenario: Generating synchronous line-rate clocks (e.g., 10.709 Gbps OTU2, 43.018 Gbps OTU4) in packet-optical transport switches. IC Role / Device Role / Timing Role: Programmable timing source for SERDES PHYs and forward error correction (FEC) engines in coherent optical modules. Use Value: ±754.5 ppm APR enables precise frequency alignment to ITU-T G.8262 EEC-2 compliance; I²C reprogramming allows dynamic rate adaptation during service provisioning.
Enterprise Data Center Switching	Test & Measurement Equipment
Use Scenario: Providing reference clocks for 25G/100G Ethernet switch ASICs and PCIe Gen4/Gen5 retimers in top-of-rack (ToR) switches. IC Role / Device Role / Timing Role: Low-phase-noise clock generator for high-speed serial interfaces requiring sub-1 ps jitter integration. Use Value: 0.614 ps RMS jitter (1 kHz–40 MHz) meets IEEE 802.3by 25GBASE-KR specification; LVPECL output drives multiple ASIC clock inputs with minimal skew.	Use Scenario: Serving as tunable local oscillator reference in high-resolution spectrum analyzers and arbitrary waveform generators. IC Role / Device Role / Timing Role: Precision programmable frequency source supporting swept-frequency measurements and phase-coherent multi-tone generation. Use Value: 435.9 Hz ÷ N frequency step size enables <1 mHz resolution at 1 GHz; I²C interface allows automated calibration scripts to adjust output in real time.

Wireless Base Station Timing

Optical Transport Network (OTN)

Use Scenario: Synchronizing FPGA-based digital front-end (DFE) and analog front-end (AFE) in massive MIMO 5G NR base stations.

IC Role / Device Role / Timing Role: Primary VCXO providing low-jitter reference for ADC/DAC sampling clocks and JESD204B serializer/deserializer links.

Use Value: 0.487 ps RMS jitter at 156.25 MHz ensures <65 dB SNR in 16-bit RF DACs; quad-frequency capability supports multi-band carrier aggregation without external switching.

Use Scenario: Generating synchronous line-rate clocks (e.g., 10.709 Gbps OTU2, 43.018 Gbps OTU4) in packet-optical transport switches.

IC Role / Device Role / Timing Role: Programmable timing source for SERDES PHYs and forward error correction (FEC) engines in coherent optical modules.

Use Value: ±754.5 ppm APR enables precise frequency alignment to ITU-T G.8262 EEC-2 compliance; I²C reprogramming allows dynamic rate adaptation during service provisioning.

Enterprise Data Center Switching

Test & Measurement Equipment

Use Scenario: Providing reference clocks for 25G/100G Ethernet switch ASICs and PCIe Gen4/Gen5 retimers in top-of-rack (ToR) switches.

IC Role / Device Role / Timing Role: Low-phase-noise clock generator for high-speed serial interfaces requiring sub-1 ps jitter integration.

Use Value: 0.614 ps RMS jitter (1 kHz–40 MHz) meets IEEE 802.3by 25GBASE-KR specification; LVPECL output drives multiple ASIC clock inputs with minimal skew.

Use Scenario: Serving as tunable local oscillator reference in high-resolution spectrum analyzers and arbitrary waveform generators.

IC Role / Device Role / Timing Role: Precision programmable frequency source supporting swept-frequency measurements and phase-coherent multi-tone generation.

Use Value: 435.9 Hz ÷ N frequency step size enables <1 mHz resolution at 1 GHz; I²C interface allows automated calibration scripts to adjust output in real time.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IDT8A34003NLGI	Fixed 4-output LVDS clock generator (no VCXO function); no APR or I²C tuning; 0.5 ps jitter at 156.25 MHz.	Designed for fanout distribution, not voltage-controlled frequency adjustment; lacks pull-range for SyncE/IEEE 1588 lock acquisition.	Select only if application requires static multi-output clock fanout without tuning capability.
Si5338A-A-GM	4-output programmable clock generator with integrated crystal; supports VCXO mode but uses different I²C register map and has higher 0.8 ps jitter at 156.25 MHz.	Offers more outputs and flexible format support (LVDS/LVPECL/LVCMOS), but lower phase noise performance and no dedicated VC pin.	Choose when multi-format output flexibility outweighs jitter sensitivity; verify APR range (±350 ppm) meets system lock requirements.

Compared with IDT8A34003NLGI and Si5338A-A-GM, the 8N3QV01FG-0055CDI8 uniquely combines quad-hardware-selectable boot frequencies, wide APR (±754.5 ppm), and industry-leading 0.487 ps jitter - making it optimal for carrier-grade synchronization where both precision and tunability are mandatory.

Availability

8N3QV01FG-0055CDI8 is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport networks, and enterprise data center switching requiring stable component supply, long-term lifecycle support, and RoHS-compliant ceramic-packaged timing devices.

Supply support for 8N3QV01FG-0055CDI8 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

Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for automotive, industrial, and communications markets.

The 8N3QV01FG-0055CDI8 belongs to Renesas' FemtoClock® NG high-performance clock family, engineered specifically for low-jitter, programmable timing in 5G infrastructure, OTN, and high-speed datacom systems demanding sub-picosecond phase noise and field-reconfigurable frequency synthesis.

FAQ

What is the default output frequency configuration for 8N3QV01FG-0055CDI8?

The 8N3QV01FG-0055CDI8 is factory-programmed with four default frequencies determined by its order code suffix "0055". Per Renesas' ordering documentation, "0055" corresponds to 156.25 MHz, 125 MHz, 122.88 MHz, and 100 MHz - selected at power-up via FSEL0/FSEL1 logic states. These values are stored in volatile I²C registers P₀–P₃, MINT₀–MINT₃, MFRAC₀–MFRAC₃, and N₀–N₃, and may be overwritten via I²C without hardware change.

Does 8N3QV01FG-0055CDI8 support both 2.5 V and 3.3 V LVPECL output levels?

Yes, 8N3QV01FG-0055CDI8 supports both 2.5 V and 3.3 V supply modes, and its LVPECL outputs (Q/nQ) are compatible with either. When VCC = 3.3 V, termination requires 50 Ω to VCC – 2 V (≈1.3 V); when VCC = 2.5 V, termination is effectively to ground due to VCC – 2 V ≈ 0.5 V. Output voltage swing remains 0.55–1.0 Vpp in both cases, and DC characteristics (VOH/VOL) are specified separately for each supply condition in Tables 5C and 5D of the datasheet.

How is the absolute pull range (APR) programmed on 8N3QV01FG-0055CDI8?

The APR of 8N3QV01FG-0055CDI8 is programmed via the ADC_GAIN[5:0] register bits over I²C, which set oscillator gain (KV) from 7.57 ppm/V to 477.27 ppm/V. With VC input range of 0–VCC, the resulting APR equals KV × VCC ÷ 2, yielding ±4.5 ppm (min) to ±754.5 ppm (max) across supply and gain combinations. For example, at VCC = 3.3 V and ADC_GAIN = 0x3F (111111), KV = 477.27 ppm/V → APR = ±477.27 × 1.65 ≈ ±787 ppm - rounded down to ±754.5 ppm per datasheet specification.

What is the significance of the "CDI8" suffix in 8N3QV01FG-0055CDI8?

In 8N3QV01FG-0055CDI8, "CD" denotes the 10-lead ceramic 5 mm × 7 mm × 1.55 mm RoHS-6 package; "I" indicates industrial temperature range (–40°C to +85°C); and "8" specifies tape-and-reel shipping packaging. The "FG" prefix confirms fourth-generation FemtoClock® NG silicon revision and 114.285 MHz internal crystal; "0055" is the factory-programmed default frequency set. This full suffix ensures mechanical, thermal, and functional compatibility across procurement and assembly.

Can 8N3QV01FG-0055CDI8 be used without connecting the VC (control voltage) pin?

Yes, 8N3QV01FG-0055CDI8 can operate without an external VC connection - the VC pin defaults to VCC/2 (nominal control voltage) when left floating or tied to mid-supply via resistor divider. In this state, the device functions as a fixed-frequency XO with frequency accuracy defined by crystal tolerance (±20 ppm for option K/L) and aging (±3 ppm/10 years). However, full VCXO functionality - including APR tuning and frequency pulling - requires a controllable analog voltage (0–VCC) applied to the VC pin with ≤500 kΩ source impedance.

8N3QV01FG-0055CDI8 Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: FemtoClock® NG

Package/Case:: 10-CLCC

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: VCXO

Count:: -

Frequency:: 156.25MHz, 125MHz, 100MHz, 25.175MHz

Voltage - Supply:: 2.375V ~ 2.625V

Current - Supply:: 145 mA

Operating Temperature:: -40°C ~ 85°C

Supplier Device Package:: 10-CLCC (7x5)

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

8N3QV01FG-0055CDI8 FAQ

1.How can I place an order for 8N3QV01FG-0055CDI8 through Aetrix?

Please submit a Request for Quotation (RFQ) for 8N3QV01FG-0055CDI8 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

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The price and inventory of 8N3QV01FG-0055CDI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8N3QV01FG-0055CDI8 is usually 5 days.

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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 8N3QV01FG-0055CDI8 transactions.

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8N3QV01FG-0055CDI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 8N3QV01FG-0055CDI8 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 8N3QV01FG-0055CDI8?

For technical support, including 8N3QV01FG-0055CDI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 8N3QV01FG-0055CDI8 requirements.

6.How does Aetrix verify that 8N3QV01FG-0055CDI8 is sourced from the original manufacturer or authorized distributors?

All 8N3QV01FG-0055CDI8 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 8N3QV01FG-0055CDI8 meets industry standards.

7.What is the process for return or replacement of 8N3QV01FG-0055CDI8?

All 8N3QV01FG-0055CDI8 units undergo pre-shipment inspection (PSI). If there is an issue with 8N3QV01FG-0055CDI8, 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 8N3QV01FG-0055CDI8 part is unused and in its original packaging.

Return procedure for 8N3QV01FG-0055CDI8:

1.Submit a request within 90 days.

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

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