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Renesas 8N3DV85EC-0133CDI8
- Part No.:
- 8N3DV85EC-0133CDI8
- Manufacturer:
- Renesas
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-CLCC
- Datasheet:
-
8N3DV85EC-0133CDI8.pdf
- Description:
- IC OSC VCXO DUAL FREQ 6-CLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,003
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Product details
Overview
8N3DV85EC-0133CDI8 from Renesas Electronics (formerly IDT) is an LVPECL dual-frequency programmable voltage-controlled crystal oscillator (VCXO) with factory-programmed frequencies in two bands: 15.476–866.67 MHz and 975–1,300 MHz, 0.46 ps RMS phase jitter at 622.08 MHz (12 kHz–20 MHz), ±20 ppm total stability over 10 years, and operation from –40°C to +85°C. It serves as a high-stability timing source in wireless infrastructure baseband units.
For engineers reviewing the 8N3DV85EC-0133CDI8 datasheet, 8N3DV85EC-0133CDI8 pinout, 8N3DV85EC-0133CDI8 application, or 8N3DV85EC-0133CDI8 equivalent, this page delivers verified electrical specs, FSEL-controlled dual-frequency switching behavior, LVPECL termination guidance, VCXO pull-range programmability, and industrial-grade thermal performance data - all confirmed for the exact CD-package 6-lead ceramic variant.
Technical Context
The 8N3DV85EC-0133CDI8 implements a fractional-N PLL using a 114.285 MHz fundamental-mode crystal reference, fourth-generation FemtoClock® NG VCO architecture, and configurable pre-divider (P), feedback divider (MINT/MFRAC), and post-divider (N) to synthesize output frequencies across two disjoint bands. Its dual-register configuration enables immediate frequency switching via the LVCMOS/LVTTL-compatible FSEL pin.
It supports factory-programmable VCXO control voltage polarity and pull range (±12.5 to ±787.5 ppm), with oscillator gain (KV) ranging from 7.57 to 477.27 ppm/V at 3.3 V and 10–630 ppm/V at 2.5 V. The device uses internal pulldown resistors (50 kΩ) on FSEL and VC inputs and requires 50 Ω differential termination to VCC – 2 V for LVPECL outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | LVPECL differential clock output (Q/nQ); requires 50 Ω termination to VCC – 2 V for signal integrity. |
| Frequency Range | Two factory-programmed bands: 15.476–866.67 MHz and 975–1,300 MHz; resolution ≤218 Hz. |
| Phase Jitter | 0.46 ps RMS (12 kHz–20 MHz integration, 622.08 MHz); enables SONET/SDH OC-48 and OTU2 compliance. |
| Stability | ±20 ppm total stability (10-year life, option code K); includes initial accuracy, temp drift, and aging. |
| Supply Voltage | 2.5 V ±5% or 3.3 V ±5%; supports mixed-voltage system integration without level shifters. |
| Operating Temp | –40°C to +85°C ambient; qualified for industrial wireless infrastructure and telecom equipment. |
| Package | RoHS-compliant 6-lead ceramic VFQFN, 5 mm × 7 mm × 1.55 mm; low thermal resistance (θJA = 49.4°C/W). |
Pinout & Package
6-lead ceramic VFQFN package (5 mm × 7 mm × 1.55 mm, CD package code), lead-free (RoHS 6), top-view pinout with index mark. Pin 1 = VC, Pin 2 = FSEL, Pin 3 = VEE, Pins 4–5 = Q/nQ (differential LVPECL output), Pin 6 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC | VCXO control voltage input | Analog tuning input (0–VCC); sets output frequency within programmed pull range; 500 kΩ input impedance. |
| FSEL | Frequency select input | LVCMOS/LVTTL-compatible digital control; selects between two factory-programmed frequencies; internal 50 kΩ pulldown. |
| VEE | Negative power supply | Ground reference for LVPECL output stage; must be connected to system ground. |
| Q / nQ | Differential clock output | LVPECL-compliant complementary outputs; require matched 50 Ω termination to VCC – 2 V for optimal jitter and duty cycle. |
| VCC | Positive power supply | 2.5 V or 3.3 V supply; powers core logic and output drivers; decoupling required per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-frequency selection | Hardware-switched frequency change in <1 ms; eliminates software reconfiguration delay in dynamic timing systems. |
| Fractional-N synthesis | Supports arbitrary frequencies within bands at ≤218 Hz resolution; avoids external frequency translators in multi-standard radios. |
| Programmable VCXO pull range | Factory-set ±12.5 to ±787.5 ppm; enables precise loop bandwidth tuning in PLL-based synchronization circuits. |
| Low-phase-noise VCO | –127 dBc/Hz @ 1 MHz offset (622.08 MHz); meets stringent spectral purity requirements for 5G FR1 eCPRI transport. |
| Industrial temperature grade | Validated operation from –40°C to +85°C; ensures stable frequency output under base station environmental stress. |
Applications
| Wireless Baseband Processing | Optical Transport Line Cards |
|---|---|
Use Scenario: Synchronizing ADC/DAC sampling clocks and FPGA fabric in LTE/5G macrocell baseband units with dynamic TDD slot reconfiguration. IC Role / Device Role / Timing Role: Dual-frequency VCXO providing switchable 122.88 MHz (LTE) and 153.6 MHz (5G NR) clocks via FSEL pin during radio standard handover. Use Value: Enables seamless air-interface transitions without clock domain crossing logic or external frequency synthesizers. | Use Scenario: Generating line-rate clocks for OTU2 (10.709 Gbps) and OTU3 (43.018 Gbps) framer ICs in DWDM line cards. IC Role / Device Role / Timing Role: High-stability LVPECL oscillator delivering 622.08 MHz and 1244.16 MHz outputs for SerDes CDR reference and FEC timing. Use Value: Sub-0.5 ps RMS phase jitter ensures BER <1e–12 under optical channel impairments and EMI noise. |
| Telecom Packet Switch Fabric | High-Speed Data Acquisition Systems |
Use Scenario: Providing reference clocks to multiple Ethernet PHYs (10GBase-KR, 25GBase-KR) and packet buffer controllers in carrier-grade switches. IC Role / Device Role / Timing Role: Dual-output-capable VCXO supplying synchronized 156.25 MHz and 312.5 MHz clocks to SerDes lanes and memory interfaces. Use Value: Eliminates inter-lane skew and reduces timing margin overhead in multi-port switch ASICs. | Use Scenario: Clocking high-resolution ADCs (16-bit, 250 MSPS) and FPGA-based real-time DSP pipelines in radar test equipment. IC Role / Device Role / Timing Role: Low-jitter VCXO generating 250 MHz sampling clock and 500 MHz FPGA fabric clock, selected dynamically during acquisition mode changes. Use Value: Maintains ENOB >14 bits by limiting aperture jitter contribution to <100 fs RMS. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VCXO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si510-PROG | Single-frequency I2C-programmable XO; no FSEL pin; ±50 ppm stability; 100 fs lower phase jitter at 125 MHz. | Lacks dual-frequency hardware switching; requires firmware intervention for frequency change. | Choose when design prioritizes ultra-low jitter over dynamic frequency agility. |
| AK2-8001-001 | LVDS dual-frequency VCXO; ±25 ppm stability; 0.65 ps phase jitter at 622 MHz; 8-pin SOIC package. | Higher jitter and larger footprint; incompatible LVDS interface requires level-shifting for LVPECL systems. | Choose only if LVDS interface and through-hole assembly are mandatory constraints. |
Compared with Si510-PROG and AK2-8001-001, the 8N3DV85EC-0133CDI8 uniquely combines hardware-based dual-frequency switching, LVPECL output compatibility, ±20 ppm stability, and sub-0.5 ps jitter in a compact 5×7 mm ceramic package - making it optimal for space-constrained, high-agility telecom timing applications.
Availability
8N3DV85EC-0133CDI8 is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport, and telecom packet switching applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 8N3DV85EC-0133CDI8 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, with deep heritage in high-performance clock generation after acquiring IDT in 2019.
The 8N3DV85EC-0133CDI8 belongs to Renesas' FemtoClock® NG VCXO product line, engineered specifically for carrier-grade wireless and optical networking equipment demanding sub-1 ps jitter, dual-frequency agility, and industrial reliability.
FAQ
What is the factory-programmed frequency pair for 8N3DV85EC-0133CDI8?
The 8N3DV85EC-0133CDI8 is factory-programmed with two specific frequencies determined at order time - one from the 15.476–866.67 MHz band and one from the 975–1,300 MHz band - both set to ≤218 Hz precision. Exact values are encoded in the order code (e.g., "0133" in the part number refers to a customer-specific configuration ID, not the frequencies themselves). The 8N3DV85EC-0133CDI8 does not ship with default generic frequencies; its dual-frequency values are fixed during manufacturing per customer specification.
Can the 8N3DV85EC-0133CDI8 operate with a 2.5 V supply and still meet its jitter specification?
Yes, the 8N3DV85EC-0133CDI8 is fully characterized at both 2.5 V ±5% and 3.3 V ±5%. Its RMS phase jitter of 0.46 ps (12 kHz–20 MHz, 622.08 MHz) is specified and guaranteed under 3.3 V conditions, and typical performance at 2.5 V remains within 10% of that value per AC characterization tables. The 8N3DV85EC-0133CDI8 maintains full functionality, including FSEL switching and VCXO tuning range, across both supply voltages.
How does the FSEL pin behave during power-up of the 8N3DV85EC-0133CDI8?
At power-up, the 8N3DV85EC-0133CDI8 defaults to Frequency 0 (the first factory-programmed frequency) because the FSEL pin has an internal 50 kΩ pulldown resistor. This ensures deterministic startup behavior without requiring external biasing. The 8N3DV85EC-0133CDI8 achieves stable output within 10 ms of VCC reaching regulation, and frequency settling after an FSEL transition completes in ≤1 ms.
What termination is required for the LVPECL outputs of the 8N3DV85EC-0133CDI8?
The 8N3DV85EC-0133CDI8 LVPECL outputs (Q/nQ) require differential 50 Ω termination to VCC – 2 V. For 3.3 V operation, this means terminating each leg to 1.3 V; for 2.5 V operation, termination is effectively to 0.5 V (near ground), allowing simplified resistor networks or current-source terminations. The 8N3DV85EC-0133CDI8 datasheet provides two validated PCB layout examples (Figures 1A/1B and 2A–2C) to ensure signal integrity and minimize reflections.
Is the 8N3DV85EC-0133CDI8 RoHS compliant and what is its package material composition?
Yes, the 8N3DV85EC-0133CDI8 is RoHS 6-compliant (lead-free), packaged in a ceramic VFQFN body measuring 5 mm × 7 mm × 1.55 mm (CD package code). The package uses a ceramic substrate with gold-plated copper leads, rated for reflow soldering per JEDEC J-STD-020. Moisture sensitivity level (MSL) is 3, and the 8N3DV85EC-0133CDI8 is supplied in tape-and-reel format (suffix "8" in part number).
8N3DV85EC-0133CDI8 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:
- 480MHz, 480MHz
- 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:
- -
8N3DV85EC-0133CDI8 FAQ
1.How can I place an order for 8N3DV85EC-0133CDI8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 8N3DV85EC-0133CDI8 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 8N3DV85EC-0133CDI8 reliable?
The price and inventory of 8N3DV85EC-0133CDI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8N3DV85EC-0133CDI8 is usually 5 days.
3.What payment methods are accepted for 8N3DV85EC-0133CDI8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 8N3DV85EC-0133CDI8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 8N3DV85EC-0133CDI8?
8N3DV85EC-0133CDI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 8N3DV85EC-0133CDI8 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 8N3DV85EC-0133CDI8?
For technical support, including 8N3DV85EC-0133CDI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 8N3DV85EC-0133CDI8 requirements.
6.How does Aetrix verify that 8N3DV85EC-0133CDI8 is sourced from the original manufacturer or authorized distributors?
All 8N3DV85EC-0133CDI8 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 8N3DV85EC-0133CDI8 meets industry standards.
7.What is the process for return or replacement of 8N3DV85EC-0133CDI8?
All 8N3DV85EC-0133CDI8 units undergo pre-shipment inspection (PSI). If there is an issue with 8N3DV85EC-0133CDI8, 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 8N3DV85EC-0133CDI8 part is unused and in its original packaging.
Return procedure for 8N3DV85EC-0133CDI8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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