LTC6908
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LTC6908

Resistor Set SOT-23 Oscillator with Spread Spectrum Modulation

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 28
1ku List Price Starting From $2.05
Features
  • LTC6908-1: Complementary Outputs (0°/180°)
  • LTC6908-2: Quadrature Outputs (0°/90°)
  • 50kHz to 10MHz Frequency Range
  • One External Resistor Sets the Frequency
  • Optional Spread Spectrum Frequency Modulation for Improved EMC Performance
  • ±10% Frequency Spreading
  • 400µA Supply Current Typical (V+ = 5V, 50kHz)
  • Frequency Error ≤1.5% Max (TA = 25°C, V+ = 3V)
  • ±40ppm/°C Temperature Stability
  • Fast Start-Up Time: 260µs Typical (1MHz)
  • Outputs Muted Until Stable
  • Operates from a Single 2.7V to 5.5V Supply
  • Available in Low Profile (1mm) ThinSOT and DFN (2mm × 3mm) Packages
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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The LTC6908 is an easy-to-use precision oscillator that provides 2-outputs, shifted by either 180° or 90°. The oscillator frequency is programmed by a single external resistor (RSET) and spread spectrum frequency modulation (SSFM) can be activated for improved electromagnetic compatibility (EMC) performance.

The LTC6908 operates with a single 2.7V to 5.5V supply and provides rail-to-rail, 50% duty cycle square wave outputs. A single resistor from 10k to 2M is used to select an oscillator frequency from 50kHz to 10MHz (5V supply). The oscillator can be easily programmed using the simple formula outlined below:

fOUT =10MHz • 10k/RSET

The LTC6908’s SSFM capability modulates the output frequency by a pseudorandom noise (PRN) signal to decrease the peak electromagnetic radiation level and improve EMC performance. The amount of frequency spreading is fixed at ±10% of the center frequency. When SSFM is enabled, the rate of modulation is selected by the user. The three possible modulation rates are fOUT/16, fOUT/32 and fOUT/64.

Applications

  • Switching Power Supply Clock Reference
  • Portable and Battery-Powered Equipment
  • Precision Programmable Oscillator
  • Charge Pump Driver
Part Models 28
1ku List Price Starting From $2.05

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Jun 30, 2020

- 20_0244

Notification of Wafer Fab Location Change for 0.6µm CMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

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Notification of Wafer Fab Location Change for 0.6µm CMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

LTC6908CDCB-1#TRMPBF

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

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DC2073B-J

LTC6908-1 Silicon Oscillator Demo Board

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DC2073B-J

LTC6908-1 Silicon Oscillator Demo Board

LTC6908-1 Silicon Oscillator Demo Board

Product Detail

DC2073B demo board features ADI's SOT23 packaged silicon oscillators. The DC2073B demo board is available in eleven different options; DC2073B-A through DC2073B-K. These eleven options provide for the evaluation of resistor-set oscillator ICs and fixed frequency ICs.

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DC2073B-K

LTC6908-2 Silicon Oscillator Demo Board

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DC2073B-K

LTC6908-2 Silicon Oscillator Demo Board

LTC6908-2 Silicon Oscillator Demo Board

Product Detail

DC2073B demo board features ADI's SOT23 packaged silicon oscillators. The DC2073B demo board is available in eleven different options: DC2073B-A through DC2073B-K. These eleven options provide for the evaluation of resistor-set oscillator ICs and fixed frequency ICs.

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