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Renesas 8N3DV85KC-0203CDI
- Part No.:
- 8N3DV85KC-0203CDI
- Manufacturer:
- Renesas
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-CLCC
- Datasheet:
-
8N3DV85KC-0203CDI.pdf
- Description:
- IC OSC VCXO DUAL FREQ 6-CLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,816
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Product details
Overview
8N3DV85KC-0203CDI 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 systems. It delivers two factory-programmed output frequencies between 15.476 MHz–866.67 MHz or 975 MHz–1,300 MHz, with 218 Hz frequency resolution, ±20 ppm total stability (Option K), and RMS phase jitter of 0.46 ps (12 kHz–20 MHz at 622.08 MHz).
For engineers reviewing the 8N3DV85KC-0203CDI datasheet, 8N3DV85KC-0203CDI pinout, 8N3DV85KC-0203CDI application, or 8N3DV85KC-0203CDI equivalent, key selection criteria include dual-frequency switching via FSEL, VCXO pull range programmability (±12.5 to ±787.5 ppm), LVPECL differential output compliance, industrial temperature operation (−40°C to +85°C), and RoHS-compliant 6-lead ceramic 5 mm × 7 mm package.
Technical Context
The 8N3DV85KC-0203CDI integrates a 114.285 MHz third-overtone crystal with a fourth-generation FemtoClock® NG PLL featuring fractional-N synthesis (MINT/MFRAC feedback dividers), pre-divider (P), and post-divider (N). Its architecture supports immediate frequency switching between two factory-configured outputs via the LVCMOS/LVTTL-compatible FSEL pin.
Phase noise performance is optimized by delta-sigma noise shaping and a high reference frequency, achieving −127 dBc/Hz at 1 MHz offset (622.08 MHz carrier). The device uses internal registers to store both frequency configurations and VCXO tuning parameters-including control voltage polarity and pull range-programmed at factory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | LVPECL differential pair (Q/nQ), terminated to VCC – 2 V, 50 Ω load compatible |
| Frequency Range | 15.476–866.67 MHz or 975–1,300 MHz; two factory-set frequencies selected by FSEL |
| Frequency Resolution | 218 Hz or better - enables precise alignment to SONET/SDH, OTU, CPRI, and Ethernet timing standards |
| RMS Phase Jitter | 0.46 ps (12 kHz–20 MHz integration, 622.08 MHz); meets OC-48/STM-16 and 10G Ethernet jitter budgets |
| VCXO Pull Range | Programmable from ±12.5 ppm to ±787.5 ppm - supports flexible loop bandwidth tuning in PLL-based systems |
| Supply Voltage | 2.5 V or 3.3 V ±5%; supports mixed-voltage board designs without level-shifting |
| Operating Temperature | −40°C to +85°C ambient - qualified for base station RF units and carrier-grade networking equipment |
| Package | RoHS-compliant 6-lead ceramic VFQFN, 5 mm × 7 mm × 1.55 mm - low-profile, thermally robust for dense PCB layouts |
Pinout & Package
6-lead ceramic VFQFN package (CD), 5 mm × 7 mm × 1.55 mm, 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; accepts 0–VCC range; gain programmable from 7.57–477.27 ppm/V (3.3 V) or 10–630 ppm/V (2.5 V) |
| 2 (FSEL) | Frequency select input | LVTTL/LVCMOS-compatible digital control; selects between two factory-programmed frequencies (0 = Freq₀, 1 = Freq₁) |
| 3 (VEE) | Negative power supply | Ground reference for LVPECL output stage; must be connected to system ground |
| 4 (Q) | Differential clock output (+) | LVPECL true output; requires 50 Ω termination to VCC – 2 V (3.3 V) or near-ground (2.5 V) |
| 5 (nQ) | Differential clock output (−) | LVPECL complement output; matched delay and amplitude to Q for low common-mode noise |
| 6 (VCC) | Positive power supply | Supplies core logic and output drivers; decoupling capacitor required per datasheet layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Dual-frequency programmability | Two independent factory-set frequencies within wide bands enable dynamic reconfiguration without external synthesizers |
| FemtoClock® NG PLL architecture | Fractional-N synthesis with MINT/MFRAC feedback delivers ultra-fine frequency resolution and low spurious content |
| Configurable VCXO tuning | Pull range and control voltage polarity programmed at factory - eliminates need for external DAC or polarity inversion |
| Low-jitter LVPECL output | 0.46 ps RMS phase jitter (12 kHz–20 MHz) ensures compliance with stringent SerDes and fronthaul timing requirements |
| Industrial temperature support | −40°C to +85°C operation validated across thermal cycling - suitable for outdoor small cells and remote radio heads |
| Small-footprint ceramic package | 5 mm × 7 mm VFQFN minimizes board area while maintaining thermal performance (θJA = 49.4°C/W, no airflow) |
Applications
| Wireless Base Station Transceivers | Optical Transport Network (OTN) Line Cards |
|---|---|
|
Use Scenario: Synchronizing multi-channel RF front-ends and digital up/down-converters in LTE/5G massive MIMO radios. IC Role / Device Role / Timing Role: Primary VCXO source for FPGA-based digital signal processing clocks and ADC/DAC sampling clocks. Use Value: Dual-frequency capability allows seamless handover between TDD/FDD modes or band-specific calibration sequences without clock interruption. |
Use Scenario: Providing synchronous clocking for OTU2/OTU3 framers and FEC engines in DWDM line systems. IC Role / Device Role / Timing Role: Low-jitter reference for SERDES PHYs and timing recovery circuits in optical line interface modules. Use Value: 0.46 ps RMS phase jitter meets ITU-T G.823/G.825 jitter transfer and generation limits for SDH/SONET transport layers. |
| High-Speed Data Center Interconnects | Carrier-Grade Ethernet Switch Fabric |
|
Use Scenario: Clocking 100G/400G coherent optical modules in spine-leaf architectures requiring tight inter-channel skew control. IC Role / Device Role / Timing Role: Differential LVPECL clock generator for DSP ASICs and gearbox ICs handling PAM4 modulation. Use Value: Programmable pull range (±12.5 to ±787.5 ppm) enables precise loop bandwidth tuning in CDR-based retimers. |
Use Scenario: Delivering synchronized timing to packet processors, traffic managers, and buffer memory in modular chassis switches. IC Role / Device Role / Timing Role: Dual-frequency VCXO supporting redundant clock domains and hitless switchover during failover events. Use Value: FSEL-driven instantaneous frequency change (<1 ms settling) maintains packet timestamp continuity during clock source transitions. |
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; wider frequency range (0.16–350 MHz); higher power consumption (120 mA typical) | Requires external configuration; lacks integrated VCXO tuning; suited for multi-clock domain systems rather than single-VCXO replacement | Choose when needing >2 outputs or I²C-based runtime reprogramming - not a drop-in substitute for 8N3DV85KC-0203CDI's FSEL-switched dual VCXO function |
| AK210-01D-0001 | Single-frequency LVPECL VCXO; fixed ±50 ppm pull range; no dual-frequency capability; same 5×7 mm ceramic package | Used where only one tunable frequency is needed; no FSEL pin or dual-register architecture | Choose only if dual-frequency switching is unnecessary - cannot replicate 8N3DV85KC-0203CDI's on-the-fly frequency selection or programmable pull range |
Compared with Si5338A-B-GM and AK210-01D-0001, the 8N3DV85KC-0203CDI uniquely combines factory-programmed dual-frequency operation, analog VCXO tuning, and sub-0.5 ps jitter in a minimal 6-pin footprint - making it optimal for space-constrained, high-stability RF and transport applications where deterministic frequency switching is critical.
Availability
8N3DV85KC-0203CDI is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport, and high-speed data center interconnects requiring stable component supply, long-lifecycle availability, and guaranteed factory programming of dual frequencies and VCXO pull range.
Supply support for 8N3DV85KC-0203CDI 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 acquired Integrated Device Technology (IDT) in 2019 and now develops and manufactures high-performance timing solutions including VCXOs, clock generators, and jitter cleaners.
The 8N3DV85KC-0203CDI belongs to the FemtoClock® NG VCXO product line, designed specifically for carrier-grade telecom and wireless infrastructure applications demanding ultra-low jitter, dual-frequency agility, and industrial temperature reliability.
FAQ
What is the factory-programmed frequency pair for 8N3DV85KC-0203CDI?
The exact dual-frequency pair for 8N3DV85KC-0203CDI is defined at order time and stored in internal ROM; standard configurations include combinations such as 156.25 MHz / 122.88 MHz or 622.08 MHz / 669.326 MHz. The specific frequencies are encoded in the order code suffix (e.g., "0203") and documented in the FemtoClock NG Ordering Product Information guide. 8N3DV85KC-0203CDI retains these values permanently after programming.
Can the 8N3DV85KC-0203CDI be reprogrammed after shipment?
No, the 8N3DV85KC-0203CDI is factory-programmed with immutable frequency and VCXO parameters stored in ROM. Unlike I²C-configurable clock generators, it does not support field reprogramming. All settings - including FSEL-selected frequencies, pull range, and control voltage polarity - are fixed during manufacturing and cannot be altered in-system. 8N3DV85KC-0203CDI is intended for applications where configuration stability is required.
What is the maximum allowable control voltage (VC) range for 8N3DV85KC-0203CDI?
The VC pin on the 8N3DV85KC-0203CDI accepts a DC control voltage from 0 V to VCC (2.5 V or 3.3 V), with nominal tuning point at VCC/2. The device guarantees linear tuning behavior across 10%–90% of VCC (i.e., 0.25–2.25 V at 2.5 V supply or 0.33–2.97 V at 3.3 V supply), with BSL linearity variation ≤ ±0.4%. Exceeding 0–VCC may damage the input circuitry. 8N3DV85KC-0203CDI's VC input impedance is 500 kΩ.
How does the FSEL pin switching affect output stability and jitter?
When the FSEL pin state changes, the 8N3DV85KC-0203CDI achieves full frequency settling in ≤1 ms with no phase discontinuity or cycle slip. Output jitter remains within specification (0.46 ps RMS) during and after transition because the PLL relocks using the same VCO and reference path - only divider values change. This behavior is verified across −40°C to +85°C and ensures deterministic timing in hitless switchover scenarios. 8N3DV85KC-0203CDI does not require external reset or recalibration.
Is the 8N3DV85KC-0203CDI compliant with RoHS and REACH regulations?
Yes, the 8N3DV85KC-0203CDI is RoHS 6/6 compliant (lead-free) and meets EU REACH SVHC requirements. Its 6-lead ceramic package uses nickel-palladium-gold (NiPdAu) terminal finish and contains no restricted substances above threshold limits. Certificate of Compliance and material declarations are available upon request from Aetrix Electronics. 8N3DV85KC-0203CDI is rated for industrial temperature and qualified per JEDEC JESD22-A108.
8N3DV85KC-0203CDI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- FemtoClock® NG
- Package/Case:
- 6-CLCC
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- VCXO
- Count:
- -
- Frequency:
- 698.812MHz, 706.1806MHz
- 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:
- -
8N3DV85KC-0203CDI FAQ
1.How can I place an order for 8N3DV85KC-0203CDI through Aetrix?
Please submit a Request for Quotation (RFQ) for 8N3DV85KC-0203CDI 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 8N3DV85KC-0203CDI reliable?
The price and inventory of 8N3DV85KC-0203CDI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8N3DV85KC-0203CDI is usually 5 days.
3.What payment methods are accepted for 8N3DV85KC-0203CDI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 8N3DV85KC-0203CDI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 8N3DV85KC-0203CDI?
8N3DV85KC-0203CDI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 8N3DV85KC-0203CDI 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 8N3DV85KC-0203CDI?
For technical support, including 8N3DV85KC-0203CDI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 8N3DV85KC-0203CDI requirements.
6.How does Aetrix verify that 8N3DV85KC-0203CDI is sourced from the original manufacturer or authorized distributors?
All 8N3DV85KC-0203CDI 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 8N3DV85KC-0203CDI meets industry standards.
7.What is the process for return or replacement of 8N3DV85KC-0203CDI?
All 8N3DV85KC-0203CDI units undergo pre-shipment inspection (PSI). If there is an issue with 8N3DV85KC-0203CDI, 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 8N3DV85KC-0203CDI part is unused and in its original packaging.
Return procedure for 8N3DV85KC-0203CDI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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