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Renesas 8N3DV85AC-0016CDI
- Part No.:
- 8N3DV85AC-0016CDI
- Manufacturer:
- Renesas
- Category:
- Programmable Timers and Oscillators
- Package:
- 6-CLCC
- Datasheet:
-
8N3DV85AC-0016CDI.pdf
- Description:
- IC OSC VCXO DUAL FREQ 6-CLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,864
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Product details
Overview
8N3DV85AC-0016CDI from Renesas (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 bands, 0.46 ps RMS phase jitter at 622.08 MHz (12 kHz–20 MHz), ±20 ppm total stability (Option K), and operation from -40°C to +85°C. It serves as a high-precision, switchable clock source in wireless infrastructure baseband units.
For engineers reviewing the 8N3DV85AC-0016CDI datasheet, 8N3DV85AC-0016CDI pinout, 8N3DV85AC-0016CDI application, or 8N3DV85AC-0016CDI equivalent, this page delivers verified electrical specs, FSEL-controlled dual-frequency switching behavior, LVPECL termination guidance, VCXO pull-range programmability, and industrial-temperature timing performance - all confirmed from the official IDT8N3DV85CCD Rev A datasheet.
Technical Context
The 8N3DV85AC-0016CDI implements a fractional-N PLL using a 114.285 MHz fundamental-mode crystal reference, fourth-generation FemtoClock® NG VCO architecture, and configurable P/M/N dividers to synthesize two discrete output frequencies. Its control loop includes a delta-sigma modulator for noise shaping and supports immediate frequency switching via the LVCMOS/LVTTL-compatible FSEL pin.
It features factory-programmable VCXO parameters including pull range (±12.5 to ±787.5 ppm), control voltage polarity, and oscillator gain (7.57–477.27 ppm/V depending on supply), with tuning linearity (BSL variation ±0.4%) and modulation bandwidth (100 kHz) specified across 2.5 V or 3.3 V operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | LVPECL differential pair (Q/nQ), terminated to VCC – 2 V, 0.4–1.0 V peak-to-peak swing |
| Frequency Range | Two factory-set frequencies: one in 15.476–866.67 MHz band, another in 975–1,300 MHz band |
| Phase Jitter (RMS) | 0.46 ps @ 622.08 MHz (12 kHz–20 MHz integration); 0.44 ps @ 500–1300 MHz band |
| Frequency Stability | ±20 ppm total stability over -40°C to +85°C (Option K), including aging, temp, and initial accuracy |
| Supply Voltage | 2.5 V ±5% or 3.3 V ±5%; draws 120–160 mA depending on voltage and load |
| FSEL Interface | LVCMOS/LVTTL-compatible input with internal 50 kΩ pulldown; selects between two pre-programmed frequencies |
| Package | RoHS-compliant 6-lead ceramic VFQFN, 5 mm × 7 mm × 1.55 mm, thermal resistance θJA = 49.4°C/W (no airflow) |
Pinout & Package
6-lead ceramic VFQFN package (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; sets output frequency within programmed pull range (e.g., ±20 ppm) |
| 2 - FSEL | Frequency select input | LVTTL/LVCMOS logic input with internal 50 kΩ pulldown; selects between two factory-programmed frequencies |
| 3 - VEE | Negative power supply | Ground reference for LVPECL outputs; must be connected to system ground |
| 4 - Q | Differential clock output (+) | LVPECL true output; requires 50 Ω termination to VCC – 2 V (≈0.5 V for 2.5 V supply, ≈1.3 V for 3.3 V) |
| 5 - nQ | Differential clock output (–) | LVPECL complement output; used with Q for low-noise, common-mode-rejecting clock distribution |
| 6 - VCC | Positive power supply | Supplies core and output drivers; accepts 2.5 V ±5% or 3.3 V ±5% |
Key Features
| Feature | Design Value |
|---|---|
| Dual-frequency selection | Hardware-switched between two factory-programmed frequencies via single FSEL pin - no I²C/SPI required |
| Ultra-low phase jitter | 0.44–0.77 ps RMS (frequency-dependent), enabling compliance with SONET OC-48/192, CPRI, and IEEE 1588 timing budgets |
| Programmable VCXO pull range | Factory-configurable from ±12.5 ppm to ±787.5 ppm - supports diverse loop bandwidth and stability requirements |
| Fractional-N synthesis | Uses MINT + MFRAC feedback divider (7-bit integer + 18-bit fractional) for 218 Hz frequency resolution |
| Flexible supply compatibility | Single device supports both 2.5 V and 3.3 V operation - simplifies BOM consolidation across mixed-voltage platforms |
Applications
| Wireless Baseband Processing | Optical Transport Networking |
|---|---|
Use Scenario: Synchronizing multi-channel ADC/DAC in LTE/5G massive MIMO radio units requiring sub-100 fs jitter. IC Role / Device Role / Timing Role: Dual-frequency VCXO providing switchable sampling clocks for RF front-end calibration and data conversion paths. Use Value: Enables dynamic reconfiguration between 122.88 MHz (CPRI) and 983.04 MHz (eCPRI) without changing hardware or layout. | Use Scenario: Clocking SERDES lanes in OTU3/OTU4 line cards where deterministic latency and low jitter are critical. IC Role / Device Role / Timing Role: Primary reference oscillator feeding CDR circuits in 40G/100G optical modules with dual-rate support. Use Value: Delivers 0.46 ps RMS jitter at 622.08 MHz and 0.44 ps at 1.25 GHz - meets ITU-T G.823/G.825 jitter transfer masks. |
| Telecom Packet Switching | Industrial Precision Test Equipment |
Use Scenario: Providing synchronized clock domains for packet buffer management and traffic shapers in carrier-grade routers. IC Role / Device Role / Timing Role: Low-phase-noise VCXO supplying reference to multiple PLLs generating 156.25 MHz (Ethernet) and 312.5 MHz (PCIe Gen3) clocks. Use Value: Factory-programmed ±20 ppm stability ensures holdover performance during GPS/GNSS signal loss per ITU-T G.8262. | Use Scenario: Serving as tunable reference in automated test systems requiring rapid switching between instrument calibration frequencies. IC Role / Device Role / Timing Role: Programmable VCXO acting as agile timing source for arbitrary waveform generators and spectrum analyzers. Use Value: FSEL-driven instantaneous frequency change (<1 ms settling) eliminates software-controlled relock delays in production test sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VCXO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si510-PROG | CMOS output only; no LVPECL; uses internal XO + digital PLL; higher typical phase jitter (0.8 ps) | Not suitable for high-speed differential signaling; limited to single-ended clock trees | Select only if LVPECL is unnecessary and board space constraints favor smaller 3.2 × 2.5 mm package |
| AK20E-010000 | Fixed dual-frequency (100/125 MHz); no VCXO tuning; ±50 ppm stability; 0.55 ps jitter @ 125 MHz | Lacks voltage-controlled pull range - unsuitable for PLL lock range extension or drift compensation | Choose when dual-frequency switching is needed but closed-loop tuning is not required |
Compared with Si510-PROG and AK20E-010000, the 8N3DV85AC-0016CDI uniquely combines LVPECL outputs, factory-programmable VCXO pull range, dual-band frequency coverage (up to 1.3 GHz), and ±20 ppm stability - making it the only option among the three qualified for telecom-grade holdover and jitter-critical SerDes applications.
Availability
8N3DV85AC-0016CDI is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport networking, and telecom packet switching requiring stable component supply across extended temperature and high-reliability timing use cases.
Supply support for 8N3DV85AC-0016CDI 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 analog, mixed-signal, and timing solutions, with deep expertise in high-performance clock generation and synchronization.
The 8N3DV85AC-0016CDI belongs to the FemtoClock® NG VCXO product line, engineered specifically for next-generation wireless, optical, and packet-based infrastructure demanding ultra-low jitter, dual-frequency agility, and industrial-temperature reliability.
FAQ
What is the factory-programmed frequency pair for 8N3DV85AC-0016CDI?
The 8N3DV85AC-0016CDI is configured with two specific frequencies defined by its order code "0016": one in the 15.476–866.67 MHz band and one in the 975–1,300 MHz band. Exact values are set at IDT's factory per customer specification and documented in the shipping certificate; standard default pairs include 122.88 MHz / 983.04 MHz for CPRI/eCPRI applications. The 8N3DV85AC-0016CDI does not support field reprogramming of these frequencies.
Does 8N3DV85AC-0016CDI support 2.5 V and 3.3 V simultaneously?
No - the 8N3DV85AC-0016CDI operates from either a 2.5 V ±5% or 3.3 V ±5% supply, selected at time of order (Option Code B/F vs. A/E/K/L). The 8N3DV85AC-0016CDI cannot dynamically switch between voltages; VCC must be stable at one nominal level during operation. Both supply options deliver identical functional performance, though current draw and oscillator gain (ppm/V) differ per datasheet Tables 4A–4B and 5B.
How is the VCXO pull range configured for 8N3DV85AC-0016CDI?
The VCXO pull range of the 8N3DV85AC-0016CDI is factory-programmed and fixed per order - selectable from ±12.5 ppm to ±787.5 ppm in discrete steps. This parameter is encoded in the order code suffix (e.g., "0016") and cannot be altered post-manufacture. The 8N3DV85AC-0016CDI uses internal register settings to configure KV (oscillator gain) and linearity; actual tuning range is determined by applying 0–VCC to the VC pin.
What is the maximum allowable load capacitance on the FSEL pin of 8N3DV85AC-0016CDI?
The FSEL pin of the 8N3DV85AC-0016CDI has a typical input capacitance of 5.5 pF and an internal 50 kΩ pulldown resistor. It is designed for direct connection to LVCMOS/LVTTL logic drivers with minimal trace length; no external capacitive loading beyond PCB parasitics (<2 pF) is recommended. Exceeding 10 pF may degrade edge rate and increase setup/hold timing uncertainty, potentially causing unreliable frequency selection during power-up or mode transitions.
Can 8N3DV85AC-0016CDI drive unterminated 50 Ω transmission lines?
No - the 8N3DV85AC-0016CDI LVPECL outputs (Q/nQ) require proper DC termination to VCC – 2 V to establish correct common-mode voltage and output swing. Driving unterminated lines causes reflections, degraded jitter, and potential signal integrity failure. For 3.3 V supply, use dual 84 Ω resistors to ground and 125 Ω to VCC; for 2.5 V, use 50 Ω to ground (Figure 2C). The 8N3DV85AC-0016CDI datasheet specifies termination in Figures 1A–1B and 2A–2C.
8N3DV85AC-0016CDI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- FemtoClock® NG
- Package/Case:
- 6-CLCC
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- VCXO
- Count:
- -
- Frequency:
- 100MHz, 125MHz
- 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-0016CDI FAQ
1.How can I place an order for 8N3DV85AC-0016CDI through Aetrix?
Please submit a Request for Quotation (RFQ) for 8N3DV85AC-0016CDI 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-0016CDI reliable?
The price and inventory of 8N3DV85AC-0016CDI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 8N3DV85AC-0016CDI is usually 5 days.
3.What payment methods are accepted for 8N3DV85AC-0016CDI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 8N3DV85AC-0016CDI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 8N3DV85AC-0016CDI?
8N3DV85AC-0016CDI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 8N3DV85AC-0016CDI 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-0016CDI?
For technical support, including 8N3DV85AC-0016CDI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 8N3DV85AC-0016CDI requirements.
6.How does Aetrix verify that 8N3DV85AC-0016CDI is sourced from the original manufacturer or authorized distributors?
All 8N3DV85AC-0016CDI 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-0016CDI meets industry standards.
7.What is the process for return or replacement of 8N3DV85AC-0016CDI?
All 8N3DV85AC-0016CDI units undergo pre-shipment inspection (PSI). If there is an issue with 8N3DV85AC-0016CDI, 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-0016CDI part is unused and in its original packaging.
Return procedure for 8N3DV85AC-0016CDI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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