Renesas 8N3Q001EG-1073CDI8

Overview

8N3Q001EG-1073CDI8 from Integrated Device Technology is a quad-frequency programmable crystal oscillator (XO) using fourth-generation FemtoClock® NG PLL technology. It delivers one LVPECL differential clock output, supports 2.5V or 3.3V supply, operates from −40°C to +85°C, and provides factory-default frequencies selectable via FSEL0/FSEL1 pins - used in wireless infrastructure baseband timing and telecom line card synchronization.

For engineers reviewing the 8N3Q001EG-1073CDI8 datasheet, 8N3Q001EG-1073CDI8 pinout, 8N3Q001EG-1073CDI8 application, or 8N3Q001EG-1073CDI8 equivalent, this page details its I²C-programmable frequency synthesis (15.476 MHz–866.67 MHz and 975 MHz–1.3 GHz), fractional-N PLL architecture, RMS phase jitter of 0.244 ps @ 156.25 MHz (12 kHz–20 MHz), and ceramic 10-lead 5 mm × 7 mm package with internal pulldown/pullup terminations.

Technical Context

The 8N3Q001EG-1073CDI8 integrates a 100 MHz fundamental-mode crystal oscillator driving a fractional-N PLL with 25-bit feedback divider (7-bit integer MINT + 18-bit fractional MFRAC), 2-bit pre-divider (P), and 7-bit post-divider (N). Its VCO operates at 1950–2600 MHz, enabling high-resolution synthesis with step size of 435.9 Hz ÷ N.

Four independent register sets (P₀/MINT₀/MFRAC₀/N₀ through P₃/MINT₃/MFRAC₃/N₃) store factory-default configurations selected by FSEL[1:0]; all registers are volatile and reload on power-up. I²C interface (SCLK/SDATA) allows runtime reprogramming of any register set, while OE enables asynchronous output disable.

Key Specifications

Pinout & Package

10-lead ceramic surface-mount package (CD) measuring 5 mm × 7 mm × 1.55 mm, lead-free per RoHS 6, with exposed thermal pad not connected internally. Pin 1 (DNU) is unused and must be left unconnected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si5338A-A-GM and 8A34001C-001NLGI8, the 8N3Q001EG-1073CDI8 offers the lowest BOM cost for single-output, crystal-integrated, I²C-programmable XO applications requiring ±50 ppm stability and proven field reliability in telecom infrastructure.

Availability

8N3Q001EG-1073CDI8 is available at Aetrix Electronics and suitable for wireless infrastructure, optical networking, and enterprise switching applications requiring stable component supply, long-lifecycle availability, and RoHS-compliant ceramic packaging.

Supply support for 8N3Q001EG-1073CDI8 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

Integrated Device Technology (IDT), now part of Renesas Electronics, designs high-performance timing, memory interface, and RF solutions for communications, computing, and industrial markets.

The IDT8N3Q001 product line delivers programmable XOs optimized for telecom and wireless infrastructure, combining internal crystal resonators with FemtoClock® NG PLLs to meet stringent phase noise and stability requirements.

FAQ

What is the factory-default frequency configuration for 8N3Q001EG-1073CDI8?

The 8N3Q001EG-1073CDI8 is factory-programmed with four default frequencies corresponding to order code "1073", which maps to 100 MHz, 122.88 MHz, 125 MHz, and 156.25 MHz - all derived from the internal 100 MHz crystal and integer PLL mode for lowest phase jitter. These are loaded at power-up based on FSEL[1:0] states and can be overwritten via I²C.

Does 8N3Q001EG-1073CDI8 support both 2.5V and 3.3V supply voltages simultaneously?

No - the 8N3Q001EG-1073CDI8 operates exclusively at either 2.5 V ±5% or 3.3 V ±5%, as defined by its Option Code "E" (3.3 V, ±50 ppm). Supply voltage is fixed per device variant; dual-voltage operation is not supported. VCC must be stable within tolerance during all operating modes including I²C programming.

Can the 8N3Q001EG-1073CDI8 generate frequencies below 15.476 MHz?

No - the 8N3Q001EG-1073CDI8's specified output frequency range is strictly 15.476 MHz–866.67 MHz and 975 MHz–1300 MHz. Frequencies outside these bands are not guaranteed or characterized. The lower bound arises from PLL loop filter and VCO tuning constraints; no configuration yields stable operation below 15.476 MHz.

How is output enable (OE) functionality implemented on 8N3Q001EG-1073CDI8?

The OE pin (Pin 2) is an asynchronous, LVCMOS/LVTTL-compatible input with internal pullup. When driven low, Q and nQ enter high-impedance state immediately; when high (default), outputs are active. No hold time or setup timing is required relative to clock edges, making it suitable for hot-swap and power-gating control in 8N3Q001EG-1073CDI8-based systems.

What termination is required for the LVPECL outputs of 8N3Q001EG-1073CDI8?

Per datasheet Figure 1A, the 8N3Q001EG-1073CDI8 LVPECL outputs require 50 Ω termination to VCC − 2 V on both Q and nQ lines. For 3.3 V supply, this equals 1.3 V; for 2.5 V supply, it approximates ground. AC-coupled or Thevenin-terminated alternatives are not recommended - only DC-coupled 50 Ω to VCC − 2 V ensures specified jitter and swing performance.