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Renesas 8N3DV85FC-0101CDI
- Part No.:
- 8N3DV85FC-0101CDI
- Manufacturer:
- Renesas
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-CLCC
- Datasheet:
-
8N3DV85FC-0101CDI.pdf
- Description:
- IC OSC VCXO DUAL FREQ 6-CLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,653
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Product details
Overview
8N3DV85FC-0101CDI from Renesas (formerly IDT) is a LVPECL dual-frequency programmable voltage-controlled crystal oscillator (VCXO) used for high-precision clock generation in telecom and wireless infrastructure. It delivers two factory-programmed output frequencies between 15.476MHz–866.67MHz or 975MHz–1,300MHz, with 218Hz frequency resolution, ±12.5 to ±787.5ppm VCXO pull range, and RMS phase jitter of 0.46ps (12kHz–20MHz) at 622.08MHz.
For engineers reviewing the 8N3DV85FC-0101CDI datasheet, 8N3DV85FC-0101CDI pinout, 8N3DV85FC-0101CDI application, or 8N3DV85FC-0101CDI equivalent, this page provides verified technical context, package mapping, pin-level design meaning, real-world application deployment patterns, and validated alternative options for dual-frequency timing systems requiring low-jitter, industrial-temperature stability, and flexible VCXO tuning.
Technical Context
The 8N3DV85FC-0101CDI integrates a 114.285MHz third-overtone crystal with a fourth-generation FemtoClock® NG PLL featuring fractional-N feedback (MINT + MFRAC), pre-divider (P), and post-divider (N). Its architecture enables precise dual-frequency synthesis across two disjoint bands while maintaining sub-picosecond phase jitter performance.
Frequency selection is controlled via the LVCMOS/LVTTL-compatible FSEL pin, which switches between two factory-configured registers without glitching. The VC input accepts 0–VCC control voltage with programmable oscillator gain (7.57–477.27 ppm/V) and linearity within ±0.4% BSL, supporting closed-loop servo applications in synchronization and jitter attenuation systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | LVPECL differential pair (Q/nQ); requires 50Ω termination to VCC–2V for proper DC bias and signal integrity. |
| Frequency Range | Two disjoint bands: 15.476–866.67MHz and 975–1,300MHz; supports any two frequencies within these ranges at 218Hz resolution. |
| Phase Jitter (RMS) | 0.46ps typical (12kHz–20MHz integration) at 622.08MHz; enables compliance with SONET OC-48/STM-16 and SyncE jitter masks. |
| VCXO Pull Range | Factory-programmable from ±12.5ppm to ±787.5ppm; defines maximum frequency deviation under analog control voltage tuning. |
| Supply Voltage | 2.5V ±5% or 3.3V ±5%; supports mixed-voltage system integration without level-shifting on power rails. |
| Operating Temp | –40°C to +85°C (industrial grade); qualified for base station RF units, packet-optical transport, and carrier-grade switching equipment. |
| Package | RoHS-compliant 6-lead ceramic VFQFN (5mm × 7mm × 1.55mm); surface-mount compatible with standard reflow profiles. |
Pinout & Package
6-lead ceramic VFQFN package (5mm × 7mm × 1.55mm, CD variant), lead-free (RoHS 6), top-view pinout with Pin 1 index marker.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VC | VCXO control voltage input | Analog tuning port; 0–VCC range sets output frequency within programmed pull range; impedance 500kΩ, linearity ±0.4% BSL. |
| 2 - FSEL | Frequency select input | LVCMOS/LVTTL-compatible digital control; selects between two factory-programmed frequencies; internal 50kΩ pulldown ensures default state. |
| 3 - VEE | Negative supply rail | Ground reference for LVPECL outputs; must be connected to system ground (0V) for proper output common-mode level. |
| 4 - Q | Differential clock output (+) | LVPECL true output; 0.6–1.0V p-p swing into 50Ω load terminated to VCC–2V; rise/fall time 80–500ps. |
| 5 - nQ | Differential clock output (–) | LVPECL complement output; matched delay and amplitude to Q; enables noise rejection in balanced transmission lines. |
| 6 - VCC | Positive supply rail | 2.5V or 3.3V main power; supplies core logic and output drivers; decoupling required per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-frequency programmability | Two independent factory-set frequencies selected by single FSEL pin-enables rapid mode switching in multi-standard radios or protocol-agile network interfaces. |
| FemtoClock® NG PLL architecture | Fractional-N synthesis with delta-sigma noise shaping minimizes in-band phase noise; supports ultra-fine 218Hz frequency steps without spurs. |
| Configurable VCXO pull range & polarity | Pull range (±12.5 to ±787.5ppm) and control voltage polarity are factory-programmed-eliminates external resistor networks for loop filter design. |
| Low-jitter LVPECL outputs | 0.46ps RMS phase jitter (12kHz–20MHz) at 622.08MHz meets ITU-T G.823/G.8262 SyncE requirements for primary reference clocks. |
| Industrial temperature operation | Guaranteed performance from –40°C to +85°C with ±20ppm total stability (option K/L)-suitable for outdoor small cells and hardened metro routers. |
Applications
| Wireless Base Station Synch | Packet-Optical Transport |
|---|---|
Use Scenario: Synchronizing eNodeB and gNodeB radios to IEEE 1588v2 PTP grandmaster clocks in 4G/5G macro and small cell deployments. IC Role / Device Role / Timing Role: Primary VCXO providing dual-frequency reference for frequency translation and holdover during PTP link loss. Use Value: Sub-0.5ps phase jitter ensures <100ns time error accumulation over 1s, meeting 3GPP TS 38.104 sync accuracy requirements. |
Use Scenario: Clock recovery and regeneration in OTN framer/mapper ICs for 10G/100G coherent optical line cards. IC Role / Device Role / Timing Role: Low-noise VCXO supplying clean reference to CDR circuits and SerDes PLLs operating at 622.08MHz or 1.244Gbps. Use Value: Dual-frequency capability allows one device to support both OTU-2 (622.08MHz) and OTU-4 (1.244GHz) reference standards without board redesign. |
| Carrier-Grade Ethernet Switching | Test & Measurement Equipment |
Use Scenario: Providing traceable, low-jitter clock sources for SyncE-enabled Ethernet switches in mobile backhaul networks. IC Role / Device Role / Timing Role: Stratum 3E-compliant VCXO generating 156.25MHz or 125MHz Ethernet reference clocks with ±20ppm stability. Use Value: Factory-programmed ±20ppm option (K/L) eliminates need for external oven control or calibration, reducing BOM cost and footprint. |
Use Scenario: Reference clock generation in high-speed oscilloscopes, bit-error-rate testers, and arbitrary waveform generators. IC Role / Device Role / Timing Role: Programmable dual-output oscillator enabling fast switching between test stimulus frequencies (e.g., 100MHz for DDR3, 1.2GHz for PCIe Gen4). Use Value: 218Hz frequency resolution supports precise margin testing and jitter tolerance validation at sub-Hz offsets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-frequency VCXO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si5338A-B-GM | Quad-output, I²C-programmable clock generator; no built-in crystal; requires external 10MHz reference; higher integration but larger 4×4mm QFN. | Used where multiple synchronized clocks (up to 4) are needed; less suitable for pure VCXO holdover due to lack of integrated crystal and analog tuning. | Select when system requires >2 output frequencies or I²C-based dynamic reconfiguration; avoid if analog VCXO tuning or single-chip simplicity is critical. |
| AK210-01-100.000 | Fixed dual-frequency VCXO (100MHz/125MHz); no factory programming flexibility; ±50ppm stability; same 5×7mm ceramic package. | Targeted at cost-sensitive, volume OEM designs with static frequency needs; lacks programmable pull range or control voltage polarity. | Select for production runs with unchanging frequency pairs and tighter cost targets; avoid when field-tunable VCXO behavior or custom frequency combinations are required. |
Compared with Si5338A-B-GM and AK210-01-100.000, the 8N3DV85FC-0101CDI uniquely combines integrated crystal, analog VCXO tuning, dual-frequency selection via single pin, and industrial-grade jitter performance in a compact 5×7mm footprint-making it optimal for space-constrained, high-reliability telecom timing applications requiring factory-configured flexibility without software overhead.
Availability
8N3DV85FC-0101CDI is available at Aetrix Electronics and suitable for wireless infrastructure, packet-optical transport, and carrier-grade Ethernet switching requiring stable component supply, guaranteed long-term availability, and RoHS-compliant ceramic packaging.
Supply support for 8N3DV85FC-0101CDI 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, formed through the acquisition of IDT in 2019, is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and communications markets.
The 8N3DV85FC-0101CDI belongs to Renesas' FemtoClock® NG VCXO product line, designed specifically for high-frequency, low-jitter timing in next-generation wireless infrastructure, optical networking, and synchronization-critical embedded systems.
FAQ
What is the factory-programmed frequency pair for 8N3DV85FC-0101CDI?
The 8N3DV85FC-0101CDI is configured with two specific frequencies defined by its order code "0101": 100.000MHz and 125.000MHz. These values are permanently stored in on-chip ROM during manufacturing and cannot be altered in the field. The FSEL pin toggles between them, and both fall within the 15.476–866.67MHz band supported by the device.
Does 8N3DV85FC-0101CDI support 2.5V and 3.3V supply simultaneously?
No, the 8N3DV85FC-0101CDI operates on a single supply rail-either 2.5V ±5% or 3.3V ±5%, as indicated by its option code "F" (2.5V) or "A/E/K". The "FC" suffix confirms it is specified for 2.5V operation. Using 3.3V would exceed absolute maximum ratings and risk permanent damage to the 8N3DV85FC-0101CDI.
Can the VCXO pull range of 8N3DV85FC-0101CDI be modified after shipment?
No-the VCXO pull range, control voltage polarity, and both output frequencies are factory-programmed into non-volatile configuration registers and are immutable after shipment. The 8N3DV85FC-0101CDI does not support in-system reprogramming; any change requires ordering a new part number with updated configuration codes.
What termination is required for the LVPECL outputs of 8N3DV85FC-0101CDI?
For 2.5V operation, the 8N3DV85FC-0101CDI's Q/nQ outputs require termination to VCC – 2V ≈ 0.5V. Recommended configurations include dual 50Ω resistors to ground (Figure 2C) or Thevenin equivalents like 50Ω series + 18Ω shunt. Improper termination causes duty cycle distortion, increased jitter, and degraded 8N3DV85FC-0101CDI output integrity.
Is 8N3DV85FC-0101CDI compliant with ITU-T G.8262 for EEC Option 1?
Yes-when configured with ±20ppm total stability (option K/L), the 8N3DV85FC-0101CDI meets G.8262 EEC Option 1 requirements for enhanced primary reference clocks. Its 0.46ps RMS phase jitter at 622.08MHz and –127dBc/Hz @ 1MHz offset satisfy the noise floor and wander specifications mandated for SyncE applications.
8N3DV85FC-0101CDI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- FemtoClock® NG
- Package/Case:
- 6-CLCC
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- VCXO
- Count:
- -
- Frequency:
- 125MHz, 156.25MHz
- Voltage - Supply:
- 2.375V ~ 2.625V
- Current - Supply:
- 120 mA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 6-CLCC (7x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
8N3DV85FC-0101CDI FAQ
1.How can I place an order for 8N3DV85FC-0101CDI through Aetrix?
Please submit a Request for Quotation (RFQ) for 8N3DV85FC-0101CDI 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 8N3DV85FC-0101CDI reliable?
The price and inventory of 8N3DV85FC-0101CDI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8N3DV85FC-0101CDI is usually 5 days.
3.What payment methods are accepted for 8N3DV85FC-0101CDI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 8N3DV85FC-0101CDI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 8N3DV85FC-0101CDI?
8N3DV85FC-0101CDI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 8N3DV85FC-0101CDI 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 8N3DV85FC-0101CDI?
For technical support, including 8N3DV85FC-0101CDI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 8N3DV85FC-0101CDI requirements.
6.How does Aetrix verify that 8N3DV85FC-0101CDI is sourced from the original manufacturer or authorized distributors?
All 8N3DV85FC-0101CDI 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 8N3DV85FC-0101CDI meets industry standards.
7.What is the process for return or replacement of 8N3DV85FC-0101CDI?
All 8N3DV85FC-0101CDI units undergo pre-shipment inspection (PSI). If there is an issue with 8N3DV85FC-0101CDI, 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 8N3DV85FC-0101CDI part is unused and in its original packaging.
Return procedure for 8N3DV85FC-0101CDI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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