Renesas 8N3Q001EG-102LCDI8

Overview

8N3Q001EG-102LCDI8 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, 0.244 ps RMS phase jitter at 156.25 MHz (12 kHz–20 MHz), and operates across –40°C to +85°C for wireless infrastructure timing.

For engineers reviewing the 8N3Q001EG-102LCDI8 datasheet, 8N3Q001EG-102LCDI8 pinout, 8N3Q001EG-102LCDI8 application, or 8N3Q001EG-102LCDI8 equivalent, this device supports I²C-based frequency reprogramming, four factory-default power-up frequencies selected via FSEL0/FSEL1, fractional/integer PLL feedback modes, and 2.5 V / 3.3 V supply compatibility - critical for telecom clock synthesis and multi-rate system synchronization.

Technical Context

The 8N3Q001EG-102LCDI8 integrates a 100 MHz or 114.285 MHz internal fundamental-mode crystal oscillator driving a high-frequency VCO (1950–2600 MHz) with configurable pre-divider (P), fractional feedback divider (MINT + MFRAC), and post-divider (N). Its I²C interface allows volatile register writes to all four configuration sets (P₀–P₃, MINT₀–MINT₃, MFRAC₀–MFRAC₃, N₀–N₃), enabling dynamic frequency switching without reset.

It implements delta-sigma modulation for fractional-N synthesis, achieving 435.9 Hz ÷ N frequency resolution and optimized phase noise performance. The device uses separate VCC and VEE pins, supports LVCMOS/LVTTL control inputs with internal pullups/pulldowns, and requires 50 Ω differential termination for its LVPECL Q/nQ outputs.

Key Specifications

Pinout & Package

8N3Q001EG-102LCDI8 is housed in a lead-free 10-lead ceramic CD package (5 mm × 7 mm × 1.55 mm) with exposed pad thermal path. Pin assignments are validated 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-B-GM and 8A34001C-001NLGI8, the 8N3Q001EG-102LCDI8 provides superior single-output LVPECL performance above 866 MHz, lower phase jitter in integer PLL mode, and direct pin-compatible packaging with legacy IDT XO designs - making it optimal for high-frequency, low-jitter, single-clock applications where output count and JESD204B features are secondary.

Availability

8N3Q001EG-102LCDI8 is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport, and high-speed serial link applications requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for 8N3Q001EG-102LCDI8 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 power management ICs for communications and computing markets.

The 8N3Q001EG-102LCDI8 belongs to IDT's FemtoClock® NG programmable XO product line, designed specifically for high-frequency, low-jitter clock synthesis in wireless infrastructure, telecom, and networking equipment where flexibility and phase noise performance are critical.

FAQ

What is the default output frequency of the 8N3Q001EG-102LCDI8 at power-up?

The 8N3Q001EG-102LCDI8 does not have a single fixed default frequency. Instead, it loads one of four factory-programmed frequencies based on the logic states of FSEL0 and FSEL1 pins at power-up. For the -102L order code, these defaults are 100 MHz, 122.88 MHz, 125 MHz, and 156.25 MHz - confirmed in IDT's FemtoClock NG Ordering Product Information document.

Does the 8N3Q001EG-102LCDI8 support both 2.5 V and 3.3 V supply voltages simultaneously?

No, the 8N3Q001EG-102LCDI8 operates exclusively at either 2.5 V ±5% or 3.3 V ±5%, selected at manufacturing via option code (K = 3.3 V, ±20 ppm). The -102LCDI8 uses option code K, confirming 3.3 V operation. Both supply rails cannot be active concurrently; VCC must be supplied at the rated voltage, and VEE tied to ground.

Can the 8N3Q001EG-102LCDI8 generate frequencies below 15.476 MHz or between 866.67 MHz and 975 MHz?

No. Per the IDT8N3Q001 REV G datasheet, the 8N3Q001EG-102LCDI8 is specified for two disjoint frequency bands: 15.476–866.67 MHz and 975–1300 MHz. Frequencies outside these ranges - including the gap from 866.67 to 975 MHz - are not supported due to VCO and divider architecture limitations.

How is phase noise performance affected by selecting integer vs. fractional PLL mode on the 8N3Q001EG-102LCDI8?

In integer PLL mode (order codes 1xxx, e.g., 102L), the 8N3Q001EG-102LCDI8 achieves lower RMS phase jitter - 0.244 ps at 156.25 MHz (12 kHz–20 MHz) - due to absence of quantization noise from the delta-sigma modulator. Fractional mode (0xxx/2xxx) trades higher jitter (0.440–0.995 ps) for finer frequency resolution and broader band coverage.

Is the 8N3Q001EG-102LCDI8 pin-compatible with other IDT 10-pin CD-package XOs like the 8N3SV78?

Yes, the 8N3Q001EG-102LCDI8 shares identical mechanical dimensions, footprint, and pinout with other IDT 10-lead CD-package devices (e.g., 8N3SV78, 8A34001), including VCC, VEE, Q, nQ, OE, FSEL0, FSEL1, SCLK, SDATA, and DNU locations. However, functional compatibility depends on register mapping and feature support - not all CD-package parts support I²C programming or quad defaults.