Renesas 8N3Q001EG-1049CDI

Overview

8N3Q001EG-1049CDI 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 with programmable frequencies from 15.476 MHz to 866.67 MHz and 975 MHz to 1,300 MHz, RMS phase jitter as low as 0.244 ps (156.25 MHz, 12 kHz–20 MHz), and operates across –40°C to +85°C. It serves as a high-stability timing source in wireless infrastructure baseband units requiring multi-frequency reconfiguration.

For engineers reviewing the 8N3Q001EG-1049CDI datasheet, 8N3Q001EG-1049CDI pinout, 8N3Q001EG-1049CDI application, or 8N3Q001EG-1049CDI equivalent, this page provides verified technical context, I²C-programmable frequency architecture details, package-validated pin functions, real-world use cases in telecom systems, and two confirmed alternative XO options with documented functional trade-offs.

Technical Context

The 8N3Q001EG-1049CDI integrates a 1950–2600 MHz VCO with fractional-N PLL feedback (7-bit MINT + 18-bit MFRAC), pre-divider (P), and post-divider (N), enabling ultra-fine frequency resolution down to 435.9 Hz ÷ N. Its internal 100 MHz crystal reference supports integer-mode operation for optimized phase noise performance.

Four factory-programmed P/M/N register sets are mapped to FSEL0/FSEL1 control inputs, allowing immediate power-up frequency selection. All registers are volatile and reprogrammable via I²C (SCLK/SDATA), supporting field updates without hardware change - critical for multi-standard radio platforms requiring dynamic clock reconfiguration.

Key Specifications

Pinout & Package

8N3Q001EG-1049CDI uses the CD package: 10-lead ceramic surface-mount housing (5 mm × 7 mm × 1.55 mm), lead-free (RoHS 6), with exposed pad not connected internally.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si5338A-B-GM and 8A34001C-000LF, the 8N3Q001EG-1049CDI uniquely combines internal crystal, quad factory defaults, and FSEL-selectable boot frequencies - reducing firmware dependency and startup latency in time-sensitive wireless systems.

Availability

8N3Q001EG-1049CDI is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport, and high-speed test equipment requiring stable component supply, long-lifecycle availability, and guaranteed RoHS 6 compliance.

Supply support for 8N3Q001EG-1049CDI 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 and computing markets.

The 8N3Q001EG-1049CDI belongs to IDT's FemtoClock® NG programmable XO family, engineered specifically for wireless infrastructure and networking equipment demanding low phase noise, multi-frequency flexibility, and industrial temperature resilience.

FAQ

What is the default output frequency of the 8N3Q001EG-1049CDI at power-up?

The 8N3Q001EG-1049CDI does not have a fixed universal default frequency - it boots to one of four factory-programmed frequencies based on the logic states of FSEL0 and FSEL1 pins. For order code -1049, the default frequencies are 100 MHz, 122.88 MHz, 125 MHz, and 156.25 MHz. The specific frequency loaded at startup depends entirely on the voltage applied to those two pins during power-on.

Does the 8N3Q001EG-1049CDI require an external crystal?

No, the 8N3Q001EG-1049CDI integrates a monolithic 100 MHz fundamental-mode crystal and oscillator circuit within the 5 mm × 7 mm ceramic package. No external crystal, load capacitors, or tuning components are needed - simplifying layout and improving reliability over discrete crystal + oscillator solutions.

Can the 8N3Q001EG-1049CDI generate frequencies below 15.476 MHz or above 1300 MHz?

No. Per the official datasheet, the validated and guaranteed output frequency range for the 8N3Q001EG-1049CDI is strictly 15.476–866.67 MHz and 975–1300 MHz. Frequencies outside these bands are not supported by the PLL architecture or characterized for phase noise, jitter, or stability - attempting them may result in lock failure or out-of-spec performance.

How is the 8N3Q001EG-1049CDI's phase noise performance affected by supply voltage choice?

The 8N3Q001EG-1049CDI's RMS phase jitter (e.g., 0.244 ps @ 156.25 MHz) is specified and tested under both 2.5 V and 3.3 V supply conditions. No degradation is documented between voltages; however, 3.3 V operation provides higher output swing (0.55–1.0 Vpp) and improved noise margin, while 2.5 V reduces power consumption by ~3% and eases thermal design in dense layouts.

Is the 8N3Q001EG-1049CDI pin-compatible with other IDT 10-lead XO devices like the 8N3QV01FG series?

Yes - the 8N3Q001EG-1049CDI shares identical pin assignment, package dimensions (CD), and footprint with all IDT 10-lead ceramic XO/VCXO devices including the 8N3QV01FG series. Pin functions (VCC, VEE, Q, nQ, OE, FSEL0/1, SCLK, SDATA, DNU) are electrically and physically identical, enabling drop-in replacement where frequency and stability requirements align.