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Renesas 8N3DV85AC-0068CDI8
- Part No.:
- 8N3DV85AC-0068CDI8
- Manufacturer:
- Renesas
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-CLCC
- Datasheet:
-
8N3DV85AC-0068CDI8.pdf
- Description:
- IC OSC VCXO DUAL FREQ 6-CLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,446
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Product details
Overview
8N3DV85AC-0068CDI8 from Renesas Electronics (formerly IDT) is a LVPECL dual-frequency programmable voltage-controlled crystal oscillator (VCXO) with factory-programmed frequencies in the 15.476–866.67 MHz and 975–1,300 MHz ranges, 218 Hz frequency resolution, ±12.5 to ±787.5 ppm pull range, and RMS phase jitter of 0.46 ps (12 kHz–20 MHz) at 622.08 MHz - used for frequency agility in wireless infrastructure baseband timing.
For engineers reviewing the 8N3DV85AC-0068CDI8 datasheet, 8N3DV85AC-0068CDI8 pinout, 8N3DV85AC-0068CDI8 application, or 8N3DV85AC-0068CDI8 equivalent, this page delivers verified electrical specs, FSEL-controlled dual-frequency switching behavior, LVPECL output termination guidance, VCXO control voltage linearity (±0.4% BSL), and industrial-grade (-40°C to +85°C) ceramic-packaged timing performance.
Technical Context
The 8N3DV85AC-0068CDI8 integrates a 114.285 MHz 3rd-overtone crystal with a fourth-generation FemtoClock® NG PLL featuring fractional-N synthesis (MINT + MFRAC), pre-divider (P), and post-divider (N) to generate two factory-programmed output frequencies. Frequency selection is controlled by the LVCMOS/LVTTL-compatible FSEL pin, enabling immediate switching between configurations stored in ROM.
It uses delta-sigma modulation for noise shaping, supports 2.5 V or 3.3 V supply, and delivers low-phase-noise LVPECL outputs (Q/nQ) with 50 Ω differential termination. The VC input accepts 0–VCC tuning voltage, with programmable oscillator gain (7.57–477.27 ppm/V) and 100 kHz modulation bandwidth.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | LVPECL differential clock output (Q/nQ), terminated to 50 Ω to VCC – 2 V |
| Frequency Range | 15.476–866.67 MHz and 975–1,300 MHz; two factory-programmed values |
| Frequency Resolution | 218 Hz or better - enables precise channel spacing in telecom PHY layers |
| RMS Phase Jitter | 0.46 ps (12 kHz–20 MHz integration, 622.08 MHz); meets SONET OC-48/OTU2 jitter masks |
| VCXO Pull Range | Programmable from ±12.5 ppm to ±787.5 ppm - supports loop bandwidth tuning in PLL-based systems |
| Supply Voltage | 2.5 V ±5% or 3.3 V ±5% - compatible with FPGA I/O banks and ASIC core rails |
| Operating Temp | -40°C to +85°C - qualified for outdoor small-cell and central office equipment |
Pinout & Package
6-lead ceramic VFQFN package, 5 mm × 7 mm × 1.55 mm, RoHS 6-compliant, with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VC | VCXO control voltage input | 0–VCC analog tuning port; impedance 500 kΩ; linearity ±0.4% BSL over 10–90% VCC |
| 2 - FSEL | Frequency select input | LVCMOS/LVTTL-compatible; pulldown resistor 50 kΩ; selects between two factory-programmed frequencies |
| 3 - VEE | Negative power supply | Ground reference for LVPECL outputs; must be connected to system GND |
| 4 - Q | Differential clock output (+) | LVPECL high-speed output; requires 50 Ω termination to VCC – 2 V |
| 5 - nQ | Differential clock output (–) | Complementary LVPECL output; matched delay and amplitude to Q pin |
| 6 - VCC | Positive power supply | 2.5 V or 3.3 V supply; decoupling required per AC characteristics (IEE = 120–160 mA) |
Key Features
| Feature | Design Value |
|---|---|
| Dual-frequency selection via FSEL | Enables runtime clock domain switching without reprogramming - critical for multi-standard radios (LTE/NR/FDD/TDD) |
| Fractional-N PLL with delta-sigma modulation | Delivers ultra-fine 218 Hz step resolution and low in-band phase noise for coherent sampling applications |
| Factory-programmable VC polarity & pull range | Eliminates external op-amp inversion or resistor networks - reduces BOM count and layout area |
| Low RMS phase jitter (0.46 ps) | Meets stringent jitter budgets for 10G/25G Ethernet SerDes and CPRI/eCPRI interfaces |
| Industrial temperature operation (-40°C to +85°C) | Validated for deployment in uncontrolled environments including remote radio units and metro aggregation nodes |
Applications
| Wireless Base Station Transceivers | Optical Transport Network (OTN) Timing |
|---|---|
Use Scenario: Dual-frequency switching between LTE and 5G NR carrier frequencies in active antenna systems. IC Role / Device Role / Timing Role: VCXO providing agile, low-jitter reference clocks to RF transceivers and digital front-end FPGAs. Use Value: Enables single-hardware platform support for multiple air interface standards without clock source replacement. | Use Scenario: Synchronizing OTU2/OTU3 framer ICs and SERDES in DWDM line cards. IC Role / Device Role / Timing Role: Primary timing source delivering <0.5 ps RMS jitter to meet ITU-T G.8251/G.8262 compliance. Use Value: Eliminates need for external jitter cleaners in high-speed optical modules, reducing power and latency. |
| Network Packet Processing Systems | Test & Measurement Equipment |
Use Scenario: Clocking multi-core network processors handling 10G/25G packet classification and deep packet inspection. IC Role / Device Role / Timing Role: Low-phase-noise LVPECL reference for high-speed DDR4 memory interfaces and PCIe Gen4 SerDes. Use Value: Maintains signal integrity across parallel data paths, preventing timing margin violations under thermal stress. | Use Scenario: Programmable clock source in high-resolution oscilloscopes and bit-error-rate testers requiring sub-picosecond jitter. IC Role / Device Role / Timing Role: Factory-configured dual-frequency VCXO serving as stable, switchable reference for calibration and stimulus generation. Use Value: Provides traceable, repeatable timing accuracy across instrument operating modes without manual recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VCXO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si53204-A01AGM | 4-output, I²C-programmable, wider frequency range (0.16–2.1 GHz), higher power (220 mA), no FSEL pin | Requires firmware control instead of hardware pin toggle; suited for multi-output sync distribution | Select when needing >2 outputs or dynamic reconfiguration; avoid if pin-strapped simplicity is required |
| 8A34002NLGI | PCIe Gen4-compliant jitter attenuator with integrated PLL; fixed 100/125 MHz dual outputs; no VCXO tuning | Designed for jitter cleaning, not frequency agility; lacks VC input and pull-range programmability | Select only for jitter attenuation use cases; not a functional substitute for VCXO-based frequency switching |
Compared with Si53204-A01AGM and 8A34002NLGI, the 8N3DV85AC-0068CDI8 uniquely combines hardware-based dual-frequency selection, factory-tuned VCXO flexibility, and ultra-low jitter in a compact 6-pin ceramic package - making it optimal for space-constrained, high-agility timing applications where deterministic switching and minimal software overhead are essential.
Availability
8N3DV85AC-0068CDI8 is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport, and high-speed networking applications requiring stable component supply, guaranteed long-term availability, and RoHS-compliant ceramic-packaged timing solutions.
Supply support for 8N3DV85AC-0068CDI8 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 delivering microcontrollers, analog, power, and timing solutions, formed through the acquisition of Integrated Device Technology (IDT) in 2019.
The 8N3DV85AC-0068CDI8 belongs to the FemtoClock® NG VCXO product line, engineered specifically for high-frequency, low-jitter, dual-mode timing in wireless infrastructure and high-speed serial communication systems.
FAQ
What is the factory-programmed frequency pair for 8N3DV85AC-0068CDI8?
The exact factory-programmed frequencies for 8N3DV85AC-0068CDI8 are encoded in the order code suffix "0068" per IDT's FemtoClock NG ordering documentation. This corresponds to two specific frequencies within the supported bands (15.476–866.67 MHz or 975–1,300 MHz), programmed at manufacture and non-modifiable in-field. Confirmation requires referencing the original order specification or contacting Renesas support with the full part number 8N3DV85AC-0068CDI8.
Can 8N3DV85AC-0068CDI8 operate with a 2.5 V supply and still deliver LVPECL-level outputs?
Yes, 8N3DV85AC-0068CDI8 supports both 2.5 V and 3.3 V supplies while maintaining LVPECL-compatible output levels. At 2.5 V, VOH is VCC – 0.9 V (1.6 V) and VOL is VCC – 2.0 V (0.5 V), yielding a 1.1 V peak-to-peak swing - compliant with LVPECL signaling standards when terminated to VCC – 2 V (≈0.5 V). The device's internal biasing ensures correct logic thresholds across both supply voltages.
What is the maximum allowable control voltage (VC) range for 8N3DV85AC-0068CDI8?
The VC input on 8N3DV85AC-0068CDI8 accepts 0 V to VCC, with nominal tuning voltage at VCC/2. Operation outside this range is not guaranteed and may cause frequency deviation or instability. For a 3.3 V supply, VC must remain between 0 V and 3.3 V; for 2.5 V, between 0 V and 2.5 V. Exceeding these limits risks violating absolute maximum ratings and degrading long-term reliability of the 8N3DV85AC-0068CDI8.
How does the FSEL pin behave during power-up of 8N3DV85AC-0068CDI8?
At power-up, the internal pulldown resistor (50 kΩ) on the FSEL pin defaults it to logic low, selecting Frequency 0. The device begins oscillating and stabilizes within 10 ms (tSTARTUP). Frequency switching occurs within 1 ms (tSET) after FSEL transitions; no reset or relock delay is required. This behavior ensures deterministic startup and rapid mode switching for the 8N3DV85AC-0068CDI8 without external initialization sequencing.
Is the 8N3DV85AC-0068CDI8 pin-compatible with other IDT8N3DV85 variants?
Yes, all IDT8N3DV85 family members - including 8N3DV85AC-0068CDI8 - share identical 6-pin CD package footprint, pinout, and electrical interface. Differences lie solely in factory-programmed parameters (frequencies, pull range, stability grade), not mechanical or signal mapping. PCB designs using any IDT8N3DV85 variant can accommodate 8N3DV85AC-0068CDI8 without layout changes, provided supply voltage and thermal constraints align.
8N3DV85AC-0068CDI8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- FemtoClock® NG
- Package/Case:
- 6-CLCC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- VCXO
- Count:
- -
- Frequency:
- 161.1328MHz, 161.1328MHz
- Voltage - Supply:
- 3.135V ~ 3.465V
- Current - Supply:
- 130 mA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 6-CLCC (7x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
8N3DV85AC-0068CDI8 FAQ
1.How can I place an order for 8N3DV85AC-0068CDI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 8N3DV85AC-0068CDI8 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 8N3DV85AC-0068CDI8 reliable?
The price and inventory of 8N3DV85AC-0068CDI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8N3DV85AC-0068CDI8 is usually 5 days.
3.What payment methods are accepted for 8N3DV85AC-0068CDI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 8N3DV85AC-0068CDI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 8N3DV85AC-0068CDI8?
8N3DV85AC-0068CDI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 8N3DV85AC-0068CDI8 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 8N3DV85AC-0068CDI8?
For technical support, including 8N3DV85AC-0068CDI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 8N3DV85AC-0068CDI8 requirements.
6.How does Aetrix verify that 8N3DV85AC-0068CDI8 is sourced from the original manufacturer or authorized distributors?
All 8N3DV85AC-0068CDI8 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 8N3DV85AC-0068CDI8 meets industry standards.
7.What is the process for return or replacement of 8N3DV85AC-0068CDI8?
All 8N3DV85AC-0068CDI8 units undergo pre-shipment inspection (PSI). If there is an issue with 8N3DV85AC-0068CDI8, 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 8N3DV85AC-0068CDI8 part is unused and in its original packaging.
Return procedure for 8N3DV85AC-0068CDI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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