Renesas 8N3Q001EG-1033CDI8

Overview

8N3Q001EG-1033CDI8 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 (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.

For engineers reviewing the 8N3Q001EG-1033CDI8 datasheet, 8N3Q001EG-1033CDI8 pinout, 8N3Q001EG-1033CDI8 application, or 8N3Q001EG-1033CDI8 equivalent, this page provides verified functional identity, validated pin roles, confirmed frequency programming resolution (435.9 Hz ÷ N), I²C register architecture, and real-world jitter performance under integer PLL mode at 156.25 MHz.

Technical Context

The 8N3Q001EG-1033CDI8 integrates a 100 MHz fundamental-mode crystal oscillator driving a fractional-N PLL with 25-bit feedback divider (7-bit MINT + 18-bit MFRAC), 2-bit pre-divider (P), and 7-bit post-divider (N). Its VCO operates at 1950–2600 MHz, enabling wide-range synthesis while maintaining sub-0.3 ps RMS phase jitter at 156.25 MHz in integer PLL configuration.

Four factory-programmed frequency configurations are selected via FSEL0/FSEL1 pins and stored in volatile I²C registers; all can be reprogrammed post-power-up via I²C interface (SCLK/SDATA). The device supports both 2.5 V and 3.3 V supply modes, with LVCMOS/LVTTL-compatible control inputs and LVPECL differential outputs terminated to 50 Ω.

Key Specifications

Pinout & Package

8N3Q001EG-1033CDI8 is housed in a 10-lead ceramic surface-mount package (5 mm × 7 mm × 1.55 mm, CD package), with exposed pad not electrically connected. Pin assignments follow standard top-view layout per IDT8N3Q001 REV G datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si5338A-A-GM and 8A34001E-001CDI8, the 8N3Q001EG-1033CDI8 offers unique value in fast-boot scenarios requiring immediate clock availability via FSEL pins-without I²C initialization-while delivering industry-leading jitter at 156.25 MHz for high-speed serial links.

Availability

8N3Q001EG-1033CDI8 is available at Aetrix Electronics and suitable for wireless infrastructure, optical networking, and enterprise switching applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant ceramic packaging.

Supply support for 8N3Q001EG-1033CDI8 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, is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions for communications and computing markets.

The 8N3Q001EG-1033CDI8 belongs to IDT's FemtoClock® NG programmable XO family, designed specifically for high-frequency, low-jitter clock generation in wireless infrastructure, telecom, and high-speed datacom equipment.

FAQ

What is the default output frequency of the 8N3Q001EG-1033CDI8 at power-up?

The 8N3Q001EG-1033CDI8 has four factory-programmed default frequencies selected by FSEL0/FSEL1 pin states; the exact values depend on the order code "1033" - which corresponds to a 100 MHz crystal reference and integer PLL configuration. Per IDT's ordering documentation, 1033 maps to default frequencies of 100 MHz, 122.88 MHz, 125 MHz, and 156.25 MHz. These are loaded automatically at power-up before any I²C programming.

Does the 8N3Q001EG-1033CDI8 support both 2.5 V and 3.3 V supply voltages simultaneously?

No - the 8N3Q001EG-1033CDI8 operates on a single supply rail: either 2.5 V ±5% or 3.3 V ±5%, selected at manufacturing via option code "E" (3.3 V, ±20 ppm) in the part number. The device does not support dual-supply operation; VCC must be connected to one stable rail, and VEE is grounded. Mixing supplies will violate absolute maximum ratings.

Can the 8N3Q001EG-1033CDI8 generate frequencies below 15.476 MHz or between 866.67 MHz and 975 MHz?

No - the 8N3Q001EG-1033CDI8's specified output frequency ranges are strictly 15.476–866.67 MHz and 975–1300 MHz. Frequencies below 15.476 MHz or in the 866.67–975 MHz gap are not supported by the PLL architecture or validated in characterization. Attempting to program such values may result in unstable lock or out-of-spec jitter and is outside the guaranteed operating range.

How is RMS phase jitter measured for the 8N3Q001EG-1033CDI8, and why does it differ between integer and fractional PLL modes?

RMS phase jitter for the 8N3Q001EG-1033CDI8 is measured over 12 kHz–20 MHz (0.244 ps typical @ 156.25 MHz) using integer PLL feedback, where the delta-sigma modulator is disabled. Fractional mode introduces quantization noise that raises jitter to ~0.44 ps; integer mode trades frequency flexibility for superior spectral purity - critical for SerDes and RF sampling applications.

Is the I²C configuration of the 8N3Q001EG-1033CDI8 retained after power cycling?

No - the I²C registers in the 8N3Q001EG-1033CDI8 are volatile. Upon power-up, the device reloads the four factory-programmed P/M/N configurations stored in ROM, and defaults to the set selected by FSEL0/FSEL1. Any custom I²C writes must be re-executed after each power cycle unless an external controller handles initialization during boot.