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

Renesas 8N3QV01FG-0055CDI

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

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Part No.:: 8N3QV01FG-0055CDI

Manufacturer:: Renesas

Category:: Programmable Timers and Oscillators

Package:: 10-CLCC

Datasheet:: 8N3QV01FG-0055CDI.pdf

Description:: IC OSC VCXO QD FREQ 10CLCC

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Product details

Overview

8N3QV01FG-0055CDI 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 - deployed in wireless infrastructure baseband timing and telecom line-card clock synthesis.

For engineers reviewing the 8N3QV01FG-0055CDI datasheet, 8N3QV01FG-0055CDI pinout, 8N3QV01FG-0055CDI application, or 8N3QV01FG-0055CDI equivalent, this page provides verified package mapping (CD10 ceramic 5 mm × 7 mm), I²C-programmable PLL register architecture, FSEL0/FSEL1 default frequency selection logic, and validated LVPECL termination guidance per JEDEC-compliant AC test circuits.

Technical Context

The 8N3QV01FG-0055CDI integrates a 114.285 MHz 3rd-overtone crystal oscillator driving a fractional-N PLL with 7-bit integer (MINT) and 18-bit fractional (MFRAC) feedback dividers, pre-divider (P), and 7-bit post-divider (N), enabling sub-Hz frequency resolution (435.9 Hz ÷ N). Its VCO operates at 1950–2600 MHz, supporting high-frequency synthesis while minimizing multiplication-induced phase noise.

It implements four independent I²C-configurable PLL register sets (P₀/MINT₀/MFRAC₀/N₀ through P₃/MINT₃/MFRAC₃/N₃), each selectable via FSEL0/FSEL1 pins at power-up. The device supports volatile I²C reprogramming of any register set without requiring reset, with immediate frequency switching upon FSEL change - critical for dynamic clock provisioning in multi-rate networking systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Frequency Range	15.476–866.67 MHz and 975–1300 MHz; covers Ethernet (156.25 MHz), CPRI (307.2 MHz), OTU4 (111.81 GHz derived), and 5G fronthaul reference clocks.
Phase Jitter (RMS)	0.487 ps (12 kHz–20 MHz, 156.25 MHz); meets ITU-T G.8262 EEC-2 and Telcordia GR-1244-CORE jitter compliance for synchronous equipment clocks.
Absolute Pull Range (APR)	Programmable ±4.5 to ±754.5 ppm; enables precise frequency pulling for synchronization over packet networks (e.g., IEEE 1588 PTP slave loop control).
Supply Voltage	2.5 V or 3.3 V ±5%; dual-voltage support allows direct integration into mixed-supply FPGA/ASIC platforms without level-shifting.
Operating Temperature	−40°C to +85°C ambient; qualified for industrial-grade deployment in outdoor small cells and carrier-grade routers.
Output Interface	LVPECL differential (Q/nQ); delivers 0.55–1.0 V peak-to-peak swing into 50 Ω, compatible with SerDes CDR inputs and high-speed logic families.
Control Interface	I²C (SDATA/SCLK); enables host MCU-based frequency reconfiguration and APR tuning during system runtime without hardware modification.

Pinout & Package

Packaged in a RoHS-compliant 10-lead ceramic CLCC (CD10) measuring 5.0 mm × 7.0 mm × 1.55 mm, with 2.54 mm pitch and metallized bottom pad for thermal conduction.

Pin/Terminal	Circuit Role	Design Meaning
1 (VC)	VCXO Control Voltage Input	Analog tuning input; voltage-controlled frequency deviation scaled by ADC_GAIN register (7.57–477.27 ppm/V), used for phase-locked loop servo or network synchronization.
2 (OE)	Output Enable	Asynchronous LVCMOS/LVTTL input; drives Q/nQ into high-impedance state when low, enabling clock gating without signal contention.
3 (VEE)	Negative Power Supply	Ground reference for LVPECL outputs; must be connected to system ground plane with low-inductance path to minimize common-mode noise.
4,5 (FSEL0, FSEL1)	Default Frequency Select	LVCMOS/LVTTL inputs with internal pulldowns; select one of four factory-programmed PLL configurations (P₀–P₃/MINT₀–MINT₃/etc.) at power-up.
6,7 (Q, nQ)	Differential LVPECL Output	Complementary clock outputs; require 50 Ω termination to VCC − 2 V (3.3 V mode) or ground (2.5 V mode) per JEDEC AC test circuit.
8 (VCC)	Positive Power Supply	2.5 V or 3.3 V supply; separate VCC/VEE pins isolate core logic from output driver noise, reducing jitter coupling.
9 (SDATA)	I²C Data (Open-Drain)	Bidirectional I²C data line with internal pullup; supports readback of PLL registers and write access to all configuration bits including APR and gain.
10 (SCLK)	I²C Clock Input	LVCMOS/LVTTL-compatible clock input; controls I²C transaction timing; requires external pullup resistor per I²C bus specification.

Key Features

Feature	Design Value
Quad Default Frequency Selection	FSEL0/FSEL1 pins directly map to four independent PLL register banks (P₀–P₃/MINT₀–MINT₃/N₀–N₃), enabling instant frequency switching without I²C overhead - ideal for multi-protocol line cards.
Fractional-N Synthesis with Delta-Sigma Modulation	18-bit MFRAC + 7-bit MINT + 2-bit P + 7-bit N dividers achieve 435.9 Hz ÷ N resolution and shaped quantization noise, preserving low close-in phase noise critical for coherent radio systems.
Volatile I²C Programmability	All PLL and APR registers are writable over I²C after power-up; changes persist until next power cycle - supports field-upgradable clock profiles without firmware update.
Configurable Oscillator Gain (KV)	ADC_GAIN[5:0] register selects KV from 7.57 ppm/V to 477.27 ppm/V (3.3 V) or 10–630 ppm/V (2.5 V); allows optimization of loop bandwidth vs. jitter trade-off in sync applications.
Low-Jitter LVPECL Output	0.487 ps RMS phase jitter (12 kHz–20 MHz) at 156.25 MHz meets stringent SONET/SDH and OTN timing requirements; 0.614 ps (1 kHz–40 MHz) validates robustness against low-frequency interference.

Applications

Wireless Base Station Radio Unit	Optical Transport Network (OTN) Line Card
Use Scenario: Providing frequency-agile reference clocks for massive MIMO RF transceivers requiring simultaneous 5G NR, LTE, and legacy 3G carrier synthesis. IC Role / Device Role / Timing Role: Quad-frequency VCXO supplying synchronized 122.88 MHz, 307.2 MHz, 614.4 MHz, and 1228.8 MHz clocks to multiple DACs/ADCs and digital up/down converters. Use Value: Eliminates need for multiple discrete oscillators; I²C reprogramming enables dynamic spectrum sharing across bands without hardware change.	Use Scenario: Generating precise 156.25 MHz and 312.5 MHz clocks for OTU2/OTU3/OTU4 framers and FEC engines in metro/core DWDM systems. IC Role / Device Role / Timing Role: Primary timing source meeting ITU-T G.8262 EEC-2 wander and jitter limits; APR tuned via network management interface for PTP-assisted holdover. Use Value: Sub-0.5 ps jitter ensures bit error rate <1e−15 under worst-case optical impairments; CD10 package withstands thermal cycling in sealed chassis.
Carrier-Grade Ethernet Switch Fabric	High-Performance Test Equipment
Use Scenario: Delivering low-jitter clocks to 400G/800G switch ASICs and SerDes PHYs operating at 53.125 Gbps PAM4 and 106.25 Gbps NRZ rates. IC Role / Device Role / Timing Role: System-level clock generator with OE pin enabling per-port clock gating during link training or power-down sequences. Use Value: 0.487 ps phase jitter prevents deterministic jitter accumulation across multi-stage retiming; LVPECL drive strength supports >15 cm FR4 trace lengths.	Use Scenario: Serving as programmable reference oscillator in high-resolution sampling oscilloscopes and arbitrary waveform generators requiring sub-ps jitter stability. IC Role / Device Role / Timing Role: Calibration-grade VCXO with factory-trimmed 114.285 MHz crystal and programmable APR for closed-loop jitter measurement calibration. Use Value: 435.9 Hz frequency step size enables precise stimulus generation for jitter tolerance testing; I²C register readback supports automated self-test routines.

Wireless Base Station Radio Unit

Optical Transport Network (OTN) Line Card

Use Scenario: Providing frequency-agile reference clocks for massive MIMO RF transceivers requiring simultaneous 5G NR, LTE, and legacy 3G carrier synthesis.

IC Role / Device Role / Timing Role: Quad-frequency VCXO supplying synchronized 122.88 MHz, 307.2 MHz, 614.4 MHz, and 1228.8 MHz clocks to multiple DACs/ADCs and digital up/down converters.

Use Value: Eliminates need for multiple discrete oscillators; I²C reprogramming enables dynamic spectrum sharing across bands without hardware change.

Use Scenario: Generating precise 156.25 MHz and 312.5 MHz clocks for OTU2/OTU3/OTU4 framers and FEC engines in metro/core DWDM systems.

IC Role / Device Role / Timing Role: Primary timing source meeting ITU-T G.8262 EEC-2 wander and jitter limits; APR tuned via network management interface for PTP-assisted holdover.

Use Value: Sub-0.5 ps jitter ensures bit error rate <1e−15 under worst-case optical impairments; CD10 package withstands thermal cycling in sealed chassis.

Carrier-Grade Ethernet Switch Fabric

High-Performance Test Equipment

Use Scenario: Delivering low-jitter clocks to 400G/800G switch ASICs and SerDes PHYs operating at 53.125 Gbps PAM4 and 106.25 Gbps NRZ rates.

IC Role / Device Role / Timing Role: System-level clock generator with OE pin enabling per-port clock gating during link training or power-down sequences.

Use Value: 0.487 ps phase jitter prevents deterministic jitter accumulation across multi-stage retiming; LVPECL drive strength supports >15 cm FR4 trace lengths.

Use Scenario: Serving as programmable reference oscillator in high-resolution sampling oscilloscopes and arbitrary waveform generators requiring sub-ps jitter stability.

IC Role / Device Role / Timing Role: Calibration-grade VCXO with factory-trimmed 114.285 MHz crystal and programmable APR for closed-loop jitter measurement calibration.

Use Value: 435.9 Hz frequency step size enables precise stimulus generation for jitter tolerance testing; I²C register readback supports automated self-test routines.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si5338A-A-GM	Quad-output, I²C-programmable clock generator with integrated crystal; supports 0.16–350 MHz per output; no VCXO pull-range tuning.	Fixed-frequency synthesis only; lacks analog VC input for phase-locking to external references.	Choose for multi-output clock tree consolidation where VCXO functionality is unnecessary.
8A34001NLGI	Ultra-low-jitter (0.23 ps RMS) femtosecond clock generator; supports JESD204B/JESD204C; requires external crystal; no VCXO mode.	Designed for ADC/DAC sampling clocking in radar/AI accelerators; no APR or VC pin for network sync.	Choose when sub-0.3 ps jitter is mandatory and external reference locking is not required.

Compared with Si5338A-A-GM and 8A34001NLGI, the 8N3QV01FG-0055CDI uniquely combines quad-default frequency selection, analog VC input for phase-locking, and programmable APR - making it the only option among the three that satisfies IEEE 1588 boundary clock holdover and telecom-grade wander specifications.

Availability

8N3QV01FG-0055CDI is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport, and high-speed Ethernet switching applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant ceramic packaging.

Supply support for 8N3QV01FG-0055CDI 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 high-performance timing, microcontrollers, and analog/power solutions for industrial, automotive, and communications markets.

The 8N3QV01FG-0055CDI belongs to Renesas' FemtoClock® NG family - engineered specifically for ultra-low-jitter, programmable clock generation in 5G infrastructure, OTN, and high-speed data center interconnects where phase noise and frequency agility are critical.

FAQ

What is the factory-programmed default frequency set for 8N3QV01FG-0055CDI?

The 8N3QV01FG-0055CDI is factory-programmed with four default frequencies corresponding to order code "0055": 156.25 MHz, 312.5 MHz, 625 MHz, and 1250 MHz - selected via FSEL0/FSEL1 combinations and stored in P₀–P₃/MINT₀–MINT₃/N₀–N₃ registers. These values are confirmed in Renesas' FemtoClock NG Ceramic-Package XO and VCXO Ordering Product Information document.

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

Yes, the 8N3QV01FG-0055CDI supports either 2.5 V or 3.3 V supply voltage, and its LVPECL outputs (Q/nQ) are fully compliant with both standards: VOH = VCC − 0.8 V, VOL = VCC − 1.5 V, and VSWING = 0.55–1.0 V. Termination differs - 3.3 V mode requires 50 Ω to VCC − 2 V, while 2.5 V mode terminates to ground.

How is the Absolute Pull Range (APR) programmed on 8N3QV01FG-0055CDI?

The APR of the 8N3QV01FG-0055CDI is programmed via the APR[9:0] bits in the I²C configuration register, enabling selection from ±4.5 ppm to ±754.5 ppm in discrete steps. This setting directly configures the VCXO's tuning sensitivity (KV) and defines the usable control voltage range (0–VCC) for phase-lock applications.

What is the startup time and frequency settling time for 8N3QV01FG-0055CDI?

The 8N3QV01FG-0055CDI has a typical device startup time of 20 ms after power-up (tOSC), and an output frequency settling time of 470 µs after changing FSEL0/FSEL1 states (tSET). These values are measured under standard conditions (VCC = 3.3 V, TA = 25°C) and guarantee rapid clock availability in hot-swap and link-retrain scenarios.

Can unused SDATA and SCLK pins be left floating on 8N3QV01FG-0055CDI?

Yes, per Renesas' Application Information section, SDATA and SCLK pins may be left floating if I²C programming is not used. FSEL0/FSEL1 have internal pulldowns and OE has an internal pullup, so no external resistors are required - though a 1 kΩ resistor may be added for ESD protection in harsh environments.

8N3QV01FG-0055CDI Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: FemtoClock® NG

Package/Case:: 10-CLCC

Packaging:: Tray

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-0055CDI FAQ

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

Please submit a Request for Quotation (RFQ) for 8N3QV01FG-0055CDI 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-0055CDI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8N3QV01FG-0055CDI is usually 5 days.

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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-0055CDI?

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

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

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

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

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

Return procedure for 8N3QV01FG-0055CDI:

1.Submit a request within 90 days.

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

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