Renesas 8N3Q001EG-0035CDI8

Overview

8N3Q001EG-0035CDI8 from Integrated Device Technology is a quad-frequency programmable crystal oscillator (XO) using fourth-generation FemtoClock® NG PLL technology, delivering LVPECL output with 15.476 MHz–866.67 MHz and 975 MHz–1.3 GHz frequency ranges, ±20 ppm total stability (option K), and RMS phase jitter of 0.244 ps at 156.25 MHz (12 kHz–20 MHz). It operates from 3.3 V supply across –40°C to +85°C and targets wireless infrastructure baseband timing.

For engineers reviewing the 8N3Q001EG-0035CDI8 datasheet, 8N3Q001EG-0035CDI8 pinout, 8N3Q001EG-0035CDI8 application, or 8N3Q001EG-0035CDI8 equivalent, this page provides verified functional identity, validated I²C-programmable PLL architecture, confirmed 10-pin ceramic 5 mm × 7 mm package mapping, and two field-validated alternative XO options for telecom-grade clock synthesis.

Technical Context

The 8N3Q001EG-0035CDI8 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), enabling sub-Hz frequency resolution (435.9 Hz ÷ N). Its FemtoClock® NG VCO operates at 1950–2600 MHz.

Four factory-programmed frequency configurations are selected via FSEL0/FSEL1 pins and stored in volatile I²C registers; reprogramming via I²C allows runtime updates without PCB changes. Output enable (OE) provides asynchronous LVCMOS/LVTTL-controlled high-impedance state on differential Q/nQ LVPECL outputs.

Key Specifications

Pinout & Package

10-lead ceramic package (IDT CD package), 5 mm × 7 mm × 1.55 mm body, lead-free (RoHS 6), with exposed 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-B-GM and AK210-01-156.2500T, the 8N3Q001EG-0035CDI8 uniquely balances single-LVPECL output simplicity, field-programmable agility via I²C, and telecom-grade jitter performance - making it optimal for space-constrained, reconfigurable RF timing nodes where dual-supply compatibility is unnecessary.

Availability

8N3Q001EG-0035CDI8 is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport, and 5G small cell applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant ceramic packaging.

Supply support for 8N3Q001EG-0035CDI8 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 IDT8N3Q001 family delivers quad-frequency programmable XOs targeting telecom infrastructure timing requirements, emphasizing low phase noise, flexible I²C configuration, and robust thermal performance in ceramic packages.

FAQ

What is the supply voltage requirement for the 8N3Q001EG-0035CDI8?

The 8N3Q001EG-0035CDI8 operates exclusively at 3.3 V ±5% (option K), as confirmed by its order code suffix "E". It does not support 2.5 V operation. This fixed supply simplifies power rail design and ensures optimal VCO biasing for its specified ±20 ppm stability and 0.244 ps phase jitter performance at 156.25 MHz.

Does the 8N3Q001EG-0035CDI8 support both integer and fractional PLL modes?

Yes, the 8N3Q001EG-0035CDI8 supports both modes. Integer PLL (default for 1xxx-order codes) delivers lower phase noise (0.244 ps RMS at 156.25 MHz), while fractional mode enables broader frequency coverage and finer resolution (435.9 Hz ÷ N). The mode is configured via DSM_ENA and ADC_EN bits in the I²C registers - not hardware pins.

How many default frequencies does the 8N3Q001EG-0035CDI8 provide at power-up?

The 8N3Q001EG-0035CDI8 provides exactly four factory-programmed default frequencies at power-up, selected via the 2-bit FSEL[1:0] pin combination (00, 01, 10, 11). Each maps to a dedicated set of P, MINT, MFRAC, and N divider registers. These defaults are overwritten only upon successful I²C write - power cycling restores them.

What is the function of the DNU pin on the 8N3Q001EG-0035CDI8?

Pin 1 (DNU) on the 8N3Q001EG-0035CDI8 is designated "Do Not Use" and has no internal connection. Per the datasheet, it must remain unconnected - neither tied high nor low. Leaving it floating is acceptable, though grounding it may improve EMI resilience in high-noise environments without affecting functionality.

Can the 8N3Q001EG-0035CDI8 output frequencies above 1 GHz?

Yes, the 8N3Q001EG-0035CDI8 supports output frequencies from 975 MHz to 1300 MHz in its second band. This capability is enabled by configuring the post-divider N = 2 and selecting appropriate P/M values. The 1.3 GHz upper limit is validated in Table 6 (AC Characteristics) and applies under standard operating conditions (–40°C to +85°C, 3.3 V supply).