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

Renesas 8N4Q001FG-2059CDI8

Name: 8N4Q001FG-2059CDI8
Brand: Renesas
SKU: 8N4Q001FG-2059CDI8
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 8N4Q001FG-2059CDI8

Manufacturer:: Renesas

Category:: Programmable Timers and Oscillators

Package:: 10-CLCC

Datasheet:: 8N4Q001FG-2059CDI8.pdf

Description:: IC OSC CLOCK 10CLCC

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Product details

Overview

8N4Q001FG-2059CDI8 from Renesas (formerly IDT) is a quad-frequency programmable XO using fourth-generation FemtoClock® NG technology, delivering LVDS clock outputs from 15.476 MHz to 866.67 MHz and 975 MHz to 1,300 MHz with RMS phase jitter as low as 0.253 ps (12 kHz–20 MHz) at 156.25 MHz. It features I²C programmability, dual FSEL control inputs for four factory-default frequencies, and operates across –40°C to +85°C in a RoHS-compliant 10-lead ceramic 5 mm × 7 mm × 1.55 mm package.

For engineers reviewing the 8N4Q001FG-2059CDI8 datasheet, 8N4Q001FG-2059CDI8 pinout, 8N4Q001FG-2059CDI8 application, or 8N4Q001FG-2059CDI8 equivalent, this device supports high-precision frequency synthesis in wireless infrastructure base stations, telecom line cards, and high-speed networking switches where low-jitter, multi-frequency clock agility and industrial-temperature stability are critical.

Technical Context

The 8N4Q001FG-2059CDI8 integrates a 1950–2600 MHz VCO with fractional-N PLL architecture, using a 25-bit feedback divider (7-bit MINT + 18-bit MFRAC) and configurable pre-divider (P) and post-divider (N) to synthesize output frequencies with resolution down to 435.9 Hz ÷ N. Its internal 100 MHz or 114.285 MHz crystal reference enables wideband synthesis while minimizing multiplication-induced phase noise.

Four independent I²C-programmable register sets (P₀/MINT₀/MFRAC₀/N₀ through P₃/MINT₃/MFRAC₃/N₃) are selected via FSEL0/FSEL1 pins at power-up; all registers are volatile and reload on reset. The device supports both integer and fractional PLL feedback modes - integer mode delivers lower phase jitter (e.g., 0.253 ps RMS at 156.25 MHz), while fractional mode enables broader frequency coverage including sub-100 MHz outputs.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Frequency Range	15.476 MHz–866.67 MHz and 975 MHz–1,300 MHz - covers Ethernet, CPRI, OTU4, and SerDes reference clocks without external dividers.
RMS Phase Jitter (156.25 MHz)	0.253 ps (12 kHz–20 MHz, integer PLL) - meets stringent OC-192/SONET and 10G/25G Ethernet timing budgets.
Supply Voltage	2.5 V or 3.3 V ±5% - compatible with standard logic rails; no level-shifting required for control interface.
Output Interface	LVDS differential pair (Q/nQ) - provides robust noise immunity and <425 ps rise/fall time for high-speed signaling.
Operating Temperature	–40°C to +85°C - qualified for industrial-grade wireless infrastructure and carrier-grade networking equipment.
Frequency Resolution	435.9 Hz ÷ N (N = post-divider) - enables precise channel spacing for RF sampling and digital up/down-conversion.
Initial Accuracy	±10 ppm at 25°C - ensures reliable lock acquisition and minimal system-level calibration overhead.

Pinout & Package

Package: 10-lead ceramic, 5 mm × 7 mm × 1.55 mm, RoHS 6-compliant (CD package). Pin 1 marked with dot; top-view orientation per datasheet.

Pin/Terminal	Circuit Role	Design Meaning
DNU (Pin 1)	Do-not-use terminal	No internal connection; must be left unconnected or tied to GND per layout guidelines.
OE (Pin 2)	Output enable input	Asynchronous LVCMOS/LVTTL control: OE = 0 places Q/nQ in high-impedance state; OE = 1 enables LVDS output.
GND (Pin 3)	Power ground	Primary return path for VDD and LVDS output current; requires low-inductance connection to solid ground plane.
FSEL0 (Pin 4)	Frequency select input	LVCMOS/LVTTL input with internal pulldown; selects one of four factory-programmed PLL configurations at power-up.
FSEL1 (Pin 5)	Frequency select input	LVCMOS/LVTTL input with internal pulldown; used with FSEL0 to encode 2-bit selection (00–11) for default frequencies.
Q (Pin 6)	Differential clock output (+)	LVDS output with 247–454 mV differential swing and 1.0–1.375 V common-mode voltage; requires 100 Ω differential termination.
nQ (Pin 7)	Differential clock output (–)	Complementary LVDS output to Pin 6; matched routing essential to preserve skew and jitter performance.
VDD (Pin 8)	Power supply	Accepts 2.5 V or 3.3 V ±5%; requires local 0.1 µF ceramic + 10 µF bulk decoupling per datasheet layout guidance.
SDATA (Pin 9)	I²C data input	LVCMOS/LVTTL bidirectional I²C bus line with internal 50 kΩ pullup; supports standard/fast-mode I²C programming of PLL registers.
SCLK (Pin 10)	I²C clock input	LVCMOS/LVTTL input with internal 50 kΩ pullup; synchronizes register writes and reads during frequency reconfiguration.

Key Features

Feature	Design Value
Quad-frequency default selection	Four factory-programmed PLL configurations accessible via FSEL0/FSEL1 pins - eliminates need for external configuration EEPROM or boot-time I²C writes.
I²C programmability	Volatile register set allows runtime frequency changes without power cycle - enables dynamic clock scaling in adaptive radio systems.
FemtoClock® NG VCO core	1950–2600 MHz VCO with delta-sigma fractional-N synthesis - achieves <0.5 ps RMS jitter while supporting 1300 MHz outputs.
Industrial temperature range	–40°C to +85°C operation with ±20 ppm total stability (option K/L) - suitable for outdoor small cells and central office line cards.
LVDS output compliance	Meets ANSI TIA/EIA-644-A LVDS specifications with 247–454 mV differential swing and <425 ps edge rates - interoperable with FPGA transceivers and ASIC clock inputs.

Applications

Wireless Base Station Radio Unit	Optical Transport Network Line Card
Use Scenario: Generating synchronized 156.25 MHz, 122.88 MHz, and 100 MHz reference clocks for multiple FPGA-based digital front-end (DFE) and analog-to-digital converter (ADC) channels in massive MIMO radio units. IC Role / Device Role / Timing Role: Programmable XO providing low-jitter, multi-frequency clock source with fast (<470 µs) frequency switching between FSEL-configured profiles. Use Value: Eliminates need for multiple discrete oscillators or complex clock trees, reducing BOM count and PCB area while maintaining <0.3 ps RMS jitter across all bands.	Use Scenario: Supplying precise 10.3125 GHz (via 156.25 MHz × 66) and 12.5 GHz (×80) reference clocks to OTU4 and FlexE framer ICs in metro/core transport line cards. IC Role / Device Role / Timing Role: High-frequency XO serving as primary timing source for SERDES CDR circuits requiring ultra-low phase noise and tight initial accuracy. Use Value: Achieves –138.9 dBc/Hz @ 1 MHz offset at 156.25 MHz, meeting ITU-T G.8262 ePRTC Class D requirements without external jitter cleaners.
High-Speed Data Center Switch ASIC	5G NR Small Cell Baseband Unit
Use Scenario: Delivering 250 MHz, 312.5 MHz, and 500 MHz clocks to switch fabric controllers and packet buffer memory interfaces in 12.8 Tbps Ethernet switches. IC Role / Device Role / Timing Role: Quad-frequency XO enabling pin-compatible clock sourcing for multiple ASIC voltage domains and speed grades. Use Value: Supports simultaneous generation of PCIe Gen4/Gen5, DDR4/DDR5, and Ethernet reference clocks from a single device, simplifying timing architecture.	Use Scenario: Providing reconfigurable 30.72 MHz, 61.44 MHz, and 122.88 MHz sampling clocks to multi-band 5G NR baseband processors in indoor/outdoor small cells. IC Role / Device Role / Timing Role: Field-programmable XO allowing OEMs to adapt clock outputs to regional band plans and modulation schemes via I²C during manufacturing or field upgrade. Use Value: Enables single hardware SKU across global deployments, reducing inventory complexity and accelerating time-to-market for variant-specific firmware releases.

Wireless Base Station Radio Unit

Optical Transport Network Line Card

Use Scenario: Generating synchronized 156.25 MHz, 122.88 MHz, and 100 MHz reference clocks for multiple FPGA-based digital front-end (DFE) and analog-to-digital converter (ADC) channels in massive MIMO radio units.

IC Role / Device Role / Timing Role: Programmable XO providing low-jitter, multi-frequency clock source with fast (<470 µs) frequency switching between FSEL-configured profiles.

Use Value: Eliminates need for multiple discrete oscillators or complex clock trees, reducing BOM count and PCB area while maintaining <0.3 ps RMS jitter across all bands.

Use Scenario: Supplying precise 10.3125 GHz (via 156.25 MHz × 66) and 12.5 GHz (×80) reference clocks to OTU4 and FlexE framer ICs in metro/core transport line cards.

IC Role / Device Role / Timing Role: High-frequency XO serving as primary timing source for SERDES CDR circuits requiring ultra-low phase noise and tight initial accuracy.

Use Value: Achieves –138.9 dBc/Hz @ 1 MHz offset at 156.25 MHz, meeting ITU-T G.8262 ePRTC Class D requirements without external jitter cleaners.

High-Speed Data Center Switch ASIC

5G NR Small Cell Baseband Unit

Use Scenario: Delivering 250 MHz, 312.5 MHz, and 500 MHz clocks to switch fabric controllers and packet buffer memory interfaces in 12.8 Tbps Ethernet switches.

IC Role / Device Role / Timing Role: Quad-frequency XO enabling pin-compatible clock sourcing for multiple ASIC voltage domains and speed grades.

Use Value: Supports simultaneous generation of PCIe Gen4/Gen5, DDR4/DDR5, and Ethernet reference clocks from a single device, simplifying timing architecture.

Use Scenario: Providing reconfigurable 30.72 MHz, 61.44 MHz, and 122.88 MHz sampling clocks to multi-band 5G NR baseband processors in indoor/outdoor small cells.

IC Role / Device Role / Timing Role: Field-programmable XO allowing OEMs to adapt clock outputs to regional band plans and modulation schemes via I²C during manufacturing or field upgrade.

Use Value: Enables single hardware SKU across global deployments, reducing inventory complexity and accelerating time-to-market for variant-specific firmware releases.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si5338A-B-GM	4-output, I²C-programmable; wider frequency range (0.16–350 MHz per output); higher integration but no >900 MHz support.	Preferred for multi-clock domain SoC interfaces; unsuitable for >900 MHz SerDes references.	Select when needing ≥2 independent LVDS outputs or sub-100 MHz precision; avoid for 1+ GHz applications.
8A34001C-001NLGI	Quad-output, JESD204B-optimized; fixed 100/122.88/156.25/245.76 MHz defaults; no I²C reprogramming.	Built for deterministic latency in ADC/DAC synchronization; lacks runtime frequency agility.	Select for JESD204B-compliant data converters requiring guaranteed skew and deterministic delay; not for agile frequency hopping.

Compared with Si5338A-B-GM and 8A34001C-001NLGI, the 8N4Q001FG-2059CDI8 uniquely combines >1 GHz output capability, quad-frequency FSEL selection, and full I²C programmability in a single LVDS output - making it optimal for high-frequency, field-adaptable timing in wireless and optical infrastructure.

Availability

8N4Q001FG-2059CDI8 is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport networks, and high-speed data center switching requiring stable component supply, long-term lifecycle support, and industrial-temperature reliability.

Supply support for 8N4Q001FG-2059CDI8 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 (formerly IDT) is a global semiconductor leader specializing in timing, memory interface, and high-performance analog solutions for communications, computing, and industrial markets.

The 8N4Q001FG-2059CDI8 belongs to Renesas' FemtoClock® NG programmable oscillator family, engineered specifically for carrier-grade wireless infrastructure and optical networking equipment demanding ultra-low jitter, multi-frequency flexibility, and industrial environmental resilience.

FAQ

What is the maximum output frequency supported by the 8N4Q001FG-2059CDI8?

The 8N4Q001FG-2059CDI8 supports two distinct output frequency ranges: 15.476 MHz to 866.67 MHz and 975 MHz to 1,300 MHz. The upper limit of 1,300 MHz is achieved using the N = 2 post-divider setting and is validated per AC Electrical Characteristics Table 6. This makes the 8N4Q001FG-2059CDI8 suitable for generating reference clocks for 25G/50G/100G SerDes lanes and millimeter-wave radio synthesizers.

Does the 8N4Q001FG-2059CDI8 require an external crystal?

No, the 8N4Q001FG-2059CDI8 integrates a third-overtone quartz crystal (100 MHz or 114.285 MHz depending on order code) within its hermetically sealed ceramic package. The crystal is factory-tuned and does not require external loading capacitors or drive circuitry - simplifying board design and improving reliability over discrete crystal + oscillator solutions.

How many frequency configurations can be stored and selected on the 8N4Q001FG-2059CDI8?

The 8N4Q001FG-2059CDI8 stores four independent PLL configurations (P₀/MINT₀/MFRAC₀/N₀ through P₃/MINT₃/MFRAC₃/N₃) in volatile I²C-accessible registers. These are selected at power-up via the FSEL0 and FSEL1 pins. While only one configuration is active at a time, all four can be preloaded via I²C and switched between in under 470 µs without interrupting operation.

What is the phase jitter performance of the 8N4Q001FG-2059CDI8 at 156.25 MHz?

At 156.25 MHz output, the 8N4Q001FG-2059CDI8 delivers 0.253 ps RMS phase jitter (12 kHz–20 MHz integration bandwidth) in integer PLL feedback mode, and 0.263 ps RMS (1 kHz–40 MHz) per datasheet Table 7. This performance meets or exceeds the jitter requirements for OC-192 SONET, 10GBASE-R Ethernet, and CPRI Option 3 applications.

Is the 8N4Q001FG-2059CDI8 pin-compatible with other devices in the IDT8N4Q001 family?

Yes, all IDT8N4Q001 variants - including 8N4Q001FG-2059CDI8 - share identical 10-lead CD package dimensions, pinout, and electrical interface. Differences lie solely in factory-programmed default frequencies, crystal frequency (100 MHz vs. 114.285 MHz), and option codes (e.g., stability grade K/L). This enables drop-in replacement across variants during design-in or qualification.

8N4Q001FG-2059CDI8 Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: FemtoClock® NG

Package/Case:: 10-CLCC

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Clock Oscillator

Count:: -

Frequency:: -

Voltage - Supply:: 2.375V ~ 2.625V

Current - Supply:: 155 mA

Operating Temperature:: -40°C ~ 85°C

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

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

8N4Q001FG-2059CDI8 FAQ

1.How can I place an order for 8N4Q001FG-2059CDI8 through Aetrix?

Please submit a Request for Quotation (RFQ) for 8N4Q001FG-2059CDI8 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 8N4Q001FG-2059CDI8 reliable?

The price and inventory of 8N4Q001FG-2059CDI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8N4Q001FG-2059CDI8 is usually 5 days.

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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 8N4Q001FG-2059CDI8 transactions.

Note: Certain payment methods may incur a processing fee.

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8N4Q001FG-2059CDI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 8N4Q001FG-2059CDI8 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 8N4Q001FG-2059CDI8?

For technical support, including 8N4Q001FG-2059CDI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 8N4Q001FG-2059CDI8 requirements.

6.How does Aetrix verify that 8N4Q001FG-2059CDI8 is sourced from the original manufacturer or authorized distributors?

All 8N4Q001FG-2059CDI8 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 8N4Q001FG-2059CDI8 meets industry standards.

7.What is the process for return or replacement of 8N4Q001FG-2059CDI8?

All 8N4Q001FG-2059CDI8 units undergo pre-shipment inspection (PSI). If there is an issue with 8N4Q001FG-2059CDI8, 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 8N4Q001FG-2059CDI8 part is unused and in its original packaging.

Return procedure for 8N4Q001FG-2059CDI8:

1.Submit a request within 90 days.

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

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