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

Renesas 8N3QV01EG-0109CDI

Name: 8N3QV01EG-0109CDI
Brand: Renesas
SKU: 8N3QV01EG-0109CDI
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 8N3QV01EG-0109CDI

Manufacturer:: Renesas

Category:: Programmable Timers and Oscillators

Package:: 10-CLCC

Datasheet:: 8N3QV01EG-0109CDI.pdf

Description:: IC OSC VCXO QD FREQ 10-CLCC

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Product details

Overview

8N3QV01EG-0109CDI 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 targets wireless infrastructure baseband clocking.

For engineers reviewing the 8N3QV01EG-0109CDI datasheet, 8N3QV01EG-0109CDI pinout, 8N3QV01EG-0109CDI application, or 8N3QV01EG-0109CDI equivalent, this page provides verified technical context, I²C-programmable frequency synthesis details, LVPECL termination guidance, and validated alternative options for telecom timing systems requiring stable, reconfigurable reference clocks.

Technical Context

The 8N3QV01EG-0109CDI integrates a 114.285 MHz 3rd-overtone crystal oscillator, a fractional-N PLL with 7-bit integer (MINT) and 18-bit fractional (MFRAC) feedback dividers, and a 1950–2600 MHz VCO. Its four factory-programmed configuration registers (P₀–P₃, MINT₀–MINT₃, MFRAC₀–MFRAC₃, N₀–N₃) are selected via FSEL0/FSEL1 pins and fully reprogrammable over I²C.

It supports delta-sigma noise shaping for low phase noise, offers programmable oscillator gain (7.57–477.27 ppm/V) via ADC_GAIN[5:0], and uses internal pulldown/pullup resistors (50 kΩ) on control inputs. The device implements asynchronous OE control and requires 50 Ω termination to VCC–2 V for LVPECL outputs.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Frequency Range	15.476–866.67 MHz and 975–1300 MHz; covers Ethernet, CPRI, OTU4, and 5G fronthaul clock requirements.
Phase Jitter (RMS)	0.487 ps (12 kHz–20 MHz, 156.25 MHz); meets stringent SONET OC-192 and SyncE EEC-2 mask compliance.
Absolute Pull Range	Programmable ±4.5 to ±754.5 ppm; enables precise frequency alignment in IEEE 1588 PTP slave and network synchronization applications.
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 ambient; qualified for industrial-grade wireless infrastructure equipment deployment.
Output Interface	LVPECL differential (Q/nQ); delivers 0.55–1.0 V peak-to-peak swing into 50 Ω, compatible with FPGA/ASIC clock receivers.
Frequency Resolution	435.9 Hz ÷ N (N = post-divider); enables sub-Hz tuning granularity for fine-grained clock calibration.

Pinout & Package

10-lead ceramic CLCC package (5 mm × 7 mm × 1.55 mm, RoHS 6-compliant, CD code). Body marking "8N3QV01GCD" confirms FemtoClock® NG generation and ceramic construction.

Pin/Terminal	Circuit Role	Design Meaning
1 - VC	VCXO control voltage input	Analog tuning port; sets output frequency deviation via programmable gain (ADC_GAIN[5:0]); requires clean, low-noise bias source.
2 - OE	Output enable (LVCMOS/LVTTL)	Asynchronous active-high control; drives Q/nQ into high-impedance when low-enables clock gating without PLL reset.
3 - VEE	Negative power supply	Ground reference for LVPECL output stage; must be connected directly to system ground plane with low-inductance path.
4,5 - FSEL0, FSEL1	Default frequency select inputs	LVCMOS/LVTTL inputs with internal pulldowns; select one of four factory-configured frequencies at power-up (00–11).
6,7 - Q, nQ	Differential LVPECL clock outputs	Low-impedance emitter-follower pair; require 50 Ω termination to VCC–2 V (e.g., 84 Ω + 125 Ω for 3.3 V) for signal integrity.
8 - VCC	Positive power supply	2.5 V or 3.3 V supply; decoupling (0.1 µF ceramic + 10 µF bulk) required adjacent to pin per Renesas layout guidelines.
9 - SDATA	I²C data (open-drain)	Bi-directional I²C bus line; requires external pullup (typically 1–10 kΩ to VCC); used to write P/M/N registers and APR settings.
10 - SCLK	I²C clock input	LVCMOS/LVTTL-compatible clock input; controls register access timing; max 400 kHz standard-mode I²C operation.

Key Features

Feature	Design Value
Quad default frequency selection	FSEL0/FSEL1 pins provide hardware-selectable boot-time frequencies-eliminates need for initial I²C programming in fixed-configuration systems.
Fractional-N PLL with delta-sigma modulation	Enables ultra-fine frequency resolution (sub-Hz) and optimized phase noise performance without requiring external loop filters.
Volatile I²C register architecture	All four configuration registers (P/M/N) are writable post-power-up; allows dynamic reconfiguration during system operation or field updates.
Programmable oscillator gain (KV)	ADC_GAIN[5:0] selects KV from 7.57 to 477.27 ppm/V-permits trade-off between pull range and phase noise sensitivity to VC noise.
LVPECL output with integrated termination guidance	Specified drive strength and recommended 50 Ω transmission-line matching ensure <100 ps rise/fall times and <55% duty cycle variation.

Applications

5G Radio Unit (RU) Timing	SyncE Network Element Clock
Use Scenario: Provides reference clock for massive MIMO RF transceivers requiring tight phase coherence across multiple antenna paths. IC Role / Device Role / Timing Role: Programmable VCXO generating 122.88 MHz and 156.25 MHz for JESD204B lane synchronization and eCPRI interface timing. Use Value: ±754.5 ppm APR enables real-time compensation of temperature-induced drift in outdoor RU enclosures, maintaining <100 ns phase error over –40°C to +85°C.	Use Scenario: Serves as Stratum 3E-compliant clock source in packet-optical transport switches supporting IEEE 1588v2 and ITU-T G.8262. IC Role / Device Role / Timing Role: LVPECL output feeds clock distribution ICs (e.g., IDT 8T49N241) for multi-protocol timing (SONET, OTN, Ethernet). Use Value: 0.487 ps RMS jitter (12 kHz–20 MHz) ensures SyncE EEC-2 mask compliance and reduces bit error rate in 100G/400G coherent line cards.
CPRI Fronthaul Gateway	Multi-Radio Baseband Unit (BBU)
Use Scenario: Generates synchronized clocks for CPRI Option 7/8 links connecting centralized BBU to remote radio heads. IC Role / Device Role / Timing Role: Four factory-default frequencies (e.g., 30.72 MHz, 61.44 MHz, 122.88 MHz, 245.76 MHz) match CPRI line rate variants. Use Value: Hardware-selectable FSEL pins allow seamless switching between CPRI configurations without firmware intervention or I²C traffic.	Use Scenario: Supplies independent clock domains to FPGA-based digital front-end (DFE), analog front-end (AFE), and control processors within a single BBU chassis. IC Role / Device Role / Timing Role: I²C-reprogrammable output enables runtime adaptation to varying air interface standards (LTE, NR, NB-IoT) and bandwidths. Use Value: Sub-Hz frequency resolution (435.9 Hz ÷ N) supports precise carrier frequency offset correction in closed-loop TDD synchronization.

5G Radio Unit (RU) Timing

SyncE Network Element Clock

Use Scenario: Provides reference clock for massive MIMO RF transceivers requiring tight phase coherence across multiple antenna paths.

IC Role / Device Role / Timing Role: Programmable VCXO generating 122.88 MHz and 156.25 MHz for JESD204B lane synchronization and eCPRI interface timing.

Use Value: ±754.5 ppm APR enables real-time compensation of temperature-induced drift in outdoor RU enclosures, maintaining <100 ns phase error over –40°C to +85°C.

Use Scenario: Serves as Stratum 3E-compliant clock source in packet-optical transport switches supporting IEEE 1588v2 and ITU-T G.8262.

IC Role / Device Role / Timing Role: LVPECL output feeds clock distribution ICs (e.g., IDT 8T49N241) for multi-protocol timing (SONET, OTN, Ethernet).

Use Value: 0.487 ps RMS jitter (12 kHz–20 MHz) ensures SyncE EEC-2 mask compliance and reduces bit error rate in 100G/400G coherent line cards.

CPRI Fronthaul Gateway

Multi-Radio Baseband Unit (BBU)

Use Scenario: Generates synchronized clocks for CPRI Option 7/8 links connecting centralized BBU to remote radio heads.

IC Role / Device Role / Timing Role: Four factory-default frequencies (e.g., 30.72 MHz, 61.44 MHz, 122.88 MHz, 245.76 MHz) match CPRI line rate variants.

Use Value: Hardware-selectable FSEL pins allow seamless switching between CPRI configurations without firmware intervention or I²C traffic.

Use Scenario: Supplies independent clock domains to FPGA-based digital front-end (DFE), analog front-end (AFE), and control processors within a single BBU chassis.

IC Role / Device Role / Timing Role: I²C-reprogrammable output enables runtime adaptation to varying air interface standards (LTE, NR, NB-IoT) and bandwidths.

Use Value: Sub-Hz frequency resolution (435.9 Hz ÷ N) supports precise carrier frequency offset correction in closed-loop TDD synchronization.

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	4-output, I²C-programmable clock generator (not VCXO); no analog VC pin; higher integration but no direct pull-range tuning.	Best for multi-clock domain systems needing jitter cleaning + synthesis; unsuitable where analog frequency pulling (e.g., IEEE 1588 servo) is required.	Select when system needs >1 output or jitter attenuation; avoid if VCXO-specific analog control loop is mandatory.
8A34002NLGI	Ultra-low-jitter (0.23 ps RMS) femtosecond clock generator; fixed 4-output architecture; no VC pin; supports JESD204B subclass 1.	Targeted at high-speed data converter timing (ADC/DAC sampling clocks); lacks APR programmability and VCXO flexibility.	Prefer for JESD204B deterministic latency-critical designs; not a drop-in replacement due to pin count (24 vs. 10) and no VC interface.

Compared with Si5338A-A-GM and 8A34002NLGI, the 8N3QV01EG-0109CDI uniquely combines analog VC tuning, quad-hardware-selectable defaults, and ceramic-package stability-making it optimal for telecom infrastructure where both programmability and environmental robustness are non-negotiable.

Availability

8N3QV01EG-0109CDI is available at Aetrix Electronics and suitable for wireless infrastructure, telecom synchronization, and 5G fronthaul applications requiring stable component supply, long-lifecycle availability, and RoHS 6-compliant ceramic packaging.

Supply support for 8N3QV01EG-0109CDI 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 8N3QV01EG-0109CDI belongs to Renesas' FemtoClock® NG high-performance timing family, engineered specifically for next-generation wireless infrastructure demanding ultra-low jitter, field-programmable frequency agility, and extended temperature reliability.

FAQ

What is the default output frequency configuration for 8N3QV01EG-0109CDI?

The 8N3QV01EG-0109CDI is factory-programmed with four default frequencies determined by its order code suffix "0109". Per Renesas' ordering documentation, "0109" corresponds to 100 MHz, 122.88 MHz, 125 MHz, and 156.25 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 after boot.

Does 8N3QV01EG-0109CDI support both 2.5 V and 3.3 V supply operation?

Yes, the 8N3QV01EG-0109CDI supports dual-supply operation: VCC may be either 2.5 V ±5% or 3.3 V ±5%, as indicated by option code "E" (2.5 V) in the part number. Both supply modes are fully characterized-LVPECL output swing, phase jitter, and current draw (145 mA typical at 2.5 V; 150 mA at 3.3 V) are specified across temperature for each mode.

How is the absolute pull range (APR) programmed on 8N3QV01EG-0109CDI?

The APR of the 8N3QV01EG-0109CDI is programmed via the I²C-accessible APR register, which sets the VCXO's total frequency deviation window from ±4.5 ppm to ±754.5 ppm. This value is independent of the oscillator gain (KV) setting-both APR and ADC_GAIN[5:0] must be written to achieve desired tuning linearity and noise sensitivity. The APR register is retained only while powered; it resets to factory default on power cycle.

What termination is required for the LVPECL outputs of 8N3QV01EG-0109CDI?

The 8N3QV01EG-0109CDI's Q/nQ LVPECL outputs require 50 Ω differential termination to VCC–2 V. For 3.3 V operation, Renesas recommends two 84 Ω resistors to 3.3 V and one 125 Ω resistor to ground (Figure 1A). For 2.5 V, termination is effectively to ground (VCC–2 V ≈ 0.5 V), and Figure 2C (two 50 Ω resistors to ground) is preferred. Improper termination causes signal reflection, degraded jitter, and duty cycle distortion.

Can the 8N3QV01EG-0109CDI be used without I²C programming?

Yes-the 8N3QV01EG-0109CDI is fully functional at power-up using its four factory-programmed default frequencies. FSEL0/FSEL1 pins select one of these frequencies immediately after startup (t_startup = 20 ms). I²C is optional and only needed for custom frequency synthesis, APR adjustment, or changing the default set. Unused SCLK/SDATA pins may be left floating per datasheet guidance.

8N3QV01EG-0109CDI 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, 155.52MHz, 100MHz, 150MHz

Voltage - Supply:: 3.135V ~ 3.465V

Current - Supply:: 150 mA

Operating Temperature:: -40°C ~ 85°C

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

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

8N3QV01EG-0109CDI FAQ

1.How can I place an order for 8N3QV01EG-0109CDI through Aetrix?

Please submit a Request for Quotation (RFQ) for 8N3QV01EG-0109CDI 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 8N3QV01EG-0109CDI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8N3QV01EG-0109CDI is usually 5 days.

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8N3QV01EG-0109CDI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

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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 8N3QV01EG-0109CDI?

For technical support, including 8N3QV01EG-0109CDI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 8N3QV01EG-0109CDI requirements.

6.How does Aetrix verify that 8N3QV01EG-0109CDI is sourced from the original manufacturer or authorized distributors?

All 8N3QV01EG-0109CDI 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 8N3QV01EG-0109CDI meets industry standards.

7.What is the process for return or replacement of 8N3QV01EG-0109CDI?

All 8N3QV01EG-0109CDI units undergo pre-shipment inspection (PSI). If there is an issue with 8N3QV01EG-0109CDI, 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 8N3QV01EG-0109CDI part is unused and in its original packaging.

Return procedure for 8N3QV01EG-0109CDI:

1.Submit a request within 90 days.

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

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