Renesas 8N3QV01EG-0109CDI8

Overview

8N3QV01EG-0109CDI8 from Renesas Electronics is a quad-frequency programmable VCXO using fourth-generation FemtoClock® NG technology, delivering LVPECL differential output (15.476–866.67 MHz and 975–1300 MHz), ±4.5 to ±754.5 ppm absolute pull range, and 0.487 ps RMS phase jitter (12 kHz–20 MHz) at 156.25 MHz. It operates from 2.5 V or 3.3 V supply across –40°C to +85°C and serves as a precision clock source in wireless infrastructure baseband units.

For engineers reviewing the 8N3QV01EG-0109CDI8 datasheet, 8N3QV01EG-0109CDI8 pinout, 8N3QV01EG-0109CDI8 application, or 8N3QV01EG-0109CDI8 equivalent, this device supports I²C-programmable frequency synthesis with fractional-N PLL, four factory-default power-up frequencies selected via FSEL0/FSEL1, and high-resolution tuning (435.9 Hz ÷ N) for telecom timing compliance.

Technical Context

The 8N3QV01EG-0109CDI8 integrates a 114.285 MHz 3rd-overtone crystal oscillator driving a fractional-N PLL with pre-divider (P), 25-bit feedback divider (MINT + MFRAC), and post-divider (N). Its FemtoClock® NG VCO operates at 1950–2600 MHz, enabling wideband output synthesis while minimizing multiplication-induced phase noise.

Four independent register sets (P₀–P₃, MINT₀–MINT₃, MFRAC₀–MFRAC₃, N₀–N₃) store default configurations mapped to FSEL[1:0] states; all registers are volatile and reload on power-up. The VC input accepts 0–VCC control voltage with programmable oscillator gain (7.57–477.27 ppm/V) and ±0.1% linearity (BSL), supporting closed-loop PLL applications.

Key Specifications

Pinout & Package

Package: 10-lead ceramic CLCC (CD package), 5 mm × 7 mm × 1.55 mm, RoHS 6-compliant, surface-mount.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar VCXO applications.

Compared with Si5332A-D-GM and 8A34001C-000LF, the 8N3QV01EG-0109CDI8 uniquely combines analog VCXO control, quad-hardware-selectable defaults, and ultra-low jitter in a single LVPECL output-making it optimal for telecom infrastructure where loop stability, startup predictability, and phase noise are non-negotiable.

Availability

8N3QV01EG-0109CDI8 is available at Aetrix Electronics and suitable for 5G baseband units, OTN transport switches, CPRI radio equipment, and high-density network packet processors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 8N3QV01EG-0109CDI8 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 specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and communications markets.

The 8N3QV01EG-0109CDI8 belongs to Renesas' FemtoClock® NG high-performance clock family, engineered specifically for wireless infrastructure, telecom, and networking equipment demanding ultra-low jitter, programmable VCXO functionality, and industrial-temperature reliability.

FAQ

What is the factory-programmed default frequency set for 8N3QV01EG-0109CDI8?

The 8N3QV01EG-0109CDI8 is factory-programmed with four default frequencies corresponding to order code "0109": 100 MHz, 122.88 MHz, 125 MHz, and 156.25 MHz. These are stored in P₀–P₃, MINT₀–MINT₃, MFRAC₀–MFRAC₃, and N₀–N₃ registers and selected at power-up via FSEL0/FSEL1 logic states per Table 4 in the datasheet. The 8N3QV01EG-0109CDI8 retains these values until overwritten via I²C.

Does 8N3QV01EG-0109CDI8 support both 2.5 V and 3.3 V supply voltages simultaneously?

No, the 8N3QV01EG-0109CDI8 operates exclusively at either 2.5 V ±5% or 3.3 V ±5%, as defined by its option code "E" (2.5 V, ±20 ppm stability). It does not support dual-supply operation. VCC must be connected to a single regulated rail; mixing supplies risks latch-up or parametric failure. The 8N3QV01EG-0109CDI8's internal regulators and LVPECL drivers are optimized for one nominal voltage per device variant.

How is the absolute pull range (APR) programmed on 8N3QV01EG-0109CDI8?

The APR of the 8N3QV01EG-0109CDI8 is programmed via the APR[9:0] bits in the I²C configuration register, enabling discrete settings from ±4.5 ppm to ±754.5 ppm in 1.5 ppm steps. This value defines the total frequency deviation achievable across the full VC input range (0–VCC). The 8N3QV01EG-0109CDI8 uses this setting to scale the internal DAC gain applied to the VC pin, directly determining oscillator sensitivity.

Can 8N3QV01EG-0109CDI8 generate frequencies outside the 15.476–866.67 MHz and 975–1300 MHz bands?

No, the 8N3QV01EG-0109CDI8 is architecturally limited to those two disjoint bands due to PLL VCO operating range (1950–2600 MHz) and integer/fractional divider constraints. Frequencies below 15.476 MHz or between 866.67–975 MHz are unsupported and will not lock. The 8N3QV01EG-0109CDI8's datasheet explicitly prohibits operation outside these ranges to guarantee phase noise, jitter, and stability specifications.

What is the recommended termination for the LVPECL outputs of 8N3QV01EG-0109CDI8 at 2.5 V supply?

For 2.5 V operation, the 8N3QV01EG-0109CDI8 LVPECL outputs require termination to VCC – 2 V ≈ 0.5 V. Figure 2C in the datasheet shows the preferred scheme: 50 Ω series resistors on both Q and nQ lines, with no additional pull-downs. This matches the 50 Ω differential impedance, maintains <1% duty cycle error, and achieves the specified 100–425 ps rise/fall times. The 8N3QV01EG-0109CDI8 datasheet validates this topology for jitter performance.