The 8V97051L is a high performance wideband RF synthesizer / PLL optimized for use as the local oscillator (LO) in multi-carrier, multi-mode FDD & TDD base station radio card. It is offered in a compact 5 × 5 mm 32-VFQFN package.

The 8V97051L wideband RF synthesizer / PLL offers a default fractional mode with the option to use it with an Integer mode. It requires an external loop filter.

The 8V97051L with integrated voltage controlled oscillator (VCO) supports output frequencies from 34.375MHz to 4400MHz and maintains superior phase noise and spurious performance.

RF_OUT[A:B] output drivers have independently programmable output power ranging from –4dBm to +7dBm. The RF_OUT outputs can be muted. The mute function is accessible via an SPI command or mute pin.

IDT’s RF Synthesizer family also includes the 8V97053L – Wideband RF Synthesizer / PLL with integrated VCO - that offers enhanced phase noise specifications geared to GSM and Band 42 radio cards applications.


  • Dual differential outputs
  • Output frequency range: 34.375MHz to 4400MHz (continuous range)
  • RF output divide by 1, 2, 4, 8, 16, 32, 64
  • Open drain outputs
  • Fractional-N synthesizer (also supports Integer-N mode)
  • 16-bit Integer and 12-bit fractional (16-bit fractional when using the extended registers)
  • 3- or 4-wire SPI Interface (compatible with 3.3V and 1.8V)
  • Single 3.3V supply
  • Logic compatibility: 1.8V
  • Integrated high performance low dropout regulators (LDOs) for excellent power supply noise rejection
  • Programmable output oower level: -4dBm to +7dBm
  • Mute function
  • Ultra low PN for 1.1GHz LO: -143dBc/Hz at 1MHz offset (typical)
  • Lock detect indicators
  • Input reference frequency: 5MHz to 310MHz
  • Power consumption: 380mW (typical) (RF_OUTB disabled)
  • 5 × 5 mm 32-VFQFN package
  • Automatic VCO band selection (Autocal feature)
  • -40° to +85°C ambient operating temperature
  • Supports case temperature ≤ 105°C Operations
  • Supported by IDT Timing Commander software tool

Product Options

Part Number Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Active VFQFPN 32 I Yes Tray
Active VFQFPN 32 I Yes Reel
Active VFQFPN 32 I Yes Reel

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
8V97051L Datasheet Datasheet PDF 1.10 MB
User Guides & Manuals
RF Product Selection Guide Guide PDF 3.64 MB
8V97051L, 8V97053L Product Postcard Guide PDF 1.29 MB
8V9705x Loop Bandwidth Calculator Guide XLSX 18 KB
Timing Commander Installation Guide Guide PDF 497 KB
Application Notes & White Papers
Integer Boundary Spurs in Fractional-Feedback Phase-Locked Loops (PLLs) White Paper PDF 666 KB
PCN# : A1904-01 Add Greatek, Taiwan as an Alternate Assembly Facility Product Change Notice PDF 983 KB
Timing Commander Installer (v1.16.4) Software ZIP 19.79 MB
8V9705x Timing Commander Personality File v2.2.0 Software ZIP 3.09 MB
8V97051 IBIS Model Model - IBIS IBS 1.45 MB
RF Timing Family Product Overview Overview PDF 331 KB
8V97051L, 8V97053L Low-Power, High-Performance Wideband RF Synthesizers Product Brief Product Brief PDF 460 KB
IDT Products for Wired Broadband Applications Application Briefs PDF 686 KB
8V97051 Low-Power Wideband RF Synthesizer / PLL 日本語 Product Brief PDF 368 KB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB

Boards & Kits

Part Number Title Type Company
8V97051L-EVK Evaluation Kit for 8V97051L Evaluation Renesas