LTC6990
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LTC6990

TimerBlox: Voltage Controlled Silicon Oscillator

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Info: : PRODUCTION tooltip
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Part Details
Part Models 18
1ku List Price Starting From $1.97
Features
  • Fixed-Frequency or Voltage-Controlled Operation
    • Fixed: Single Resistor Programs Frequency with <1.5% Max Error
    • VCO: Two Resistors Set VCO Center Frequency and Tuning Range
  • Frequency Range: 488Hz to 2MHz
  • 2.25V to 5.5V Single Supply Operation
  • 72µA Supply Current at 100kHz
  • 500µs Start-Up Time
  • VCO Bandwidth >300kHz at 1MHz
  • CMOS Logic Output Sources/Sinks 20mA
  • 50% Duty Cycle Square Wave Output
  • Output Enable (Selectable Low or Hi-Z When Disabled)
  • 55°C to 125°C Operating Temperature Range
  • Available in Low Profile (1mm) SOT-23 (ThinSOT) and 2mm × 3mm DFN Package
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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The LTC6990 is a precision silicon oscillator with a programmable frequency range of 488Hz to 2MHz. It can be used as a fixed-frequency or voltage-controlled oscillator (VCO). The LTC6990 is part of the TimerBlox® family of versatile silicon timing devices.

A single resistor, RSET, programs the LTC6990’s internal master oscillator frequency. The output frequency is determined by this master oscillator and an internal frequency divider, NDIV, programmable to eight settings from 1 to 128.

Optionally, a second resistor at the SET input provides linear voltage control of the output frequency and can be used for frequency modulation. A narrow or wide VCO tuning range can be configured by the appropriate selection of the two resistors.

The LTC6990 includes an enable function that is synchronized with the master oscillator to ensure clean, glitch-free output pulses. The disabled output can be configured to be high impedance or forced low.

For easy configuration of the LTC6990, use the TimerBlox LTC6990: Voltage Controlled Oscillator Web-Based Design Tool.

Applications

  • Low Cost Precision Programmable Oscillator
  • Voltage-Controlled Oscillator
  • High Vibration, High Acceleration Environments
  • Replacement for Fixed Crystal and Ceramic Oscillators
  • Portable and Battery-Powered Equipment
Part Models 18
1ku List Price Starting From $1.97

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC6990CDCB#TRMPBF
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Product Lifecycle

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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)

LTC6990CDCB#TRMPBF

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

LTC6990CDCB#TRMPBF

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LTC6990CDCB#TRPBF

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LTC6990CS6#TRMPBF

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LTC6990CS6#TRPBF

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 3

reference details image

DC1562B-A

LTC6990 Demo Board | 1kHz to 10kHz VCO

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DC1562B-A

LTC6990 Demo Board | 1kHz to 10kHz VCO

LTC6990 Demo Board | 1kHz to 10kHz VCO

Product Detail

Demonstration circuit 1562B is an engineering tool to design and evaluate the LTC699X-X family of TimerBlox® circuits. The center section of the board contains a preconfigured TimerBlox function. DC1562B comes in twelve timing function variations as outlined in Table 1.

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DC2769A-B

LTC6990/LTC4124 Demo Board | 25mA Wireless Li-Ion Charger Demonstration Kit

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DC2769A-B

LTC6990/LTC4124 Demo Board | 25mA Wireless Li-Ion Charger Demonstration Kit

LTC6990/LTC4124 Demo Board | 25mA Wireless Li-Ion Charger Demonstration Kit

Product Detail

DC2769A-B-KIT is a kit of the DC2771A-B transmitter board, featuring LTC6990 and the DC2775A-B, featuring LTC4124. The DC2775A-B receiver can charge a single Li-Ion battery at up to 25mA with an air gap of 2mm to 5mm between the transmit and receive coils. 
reference details image

DC2769A-A

LTC6990/LTC4124 Demo Board | 10mA Wireless Li-Ion Charger Demonstration Kit

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DC2769A-A

LTC6990/LTC4124 Demo Board | 10mA Wireless Li-Ion Charger Demonstration Kit

LTC6990/LTC4124 Demo Board | 10mA Wireless Li-Ion Charger Demonstration Kit

Product Detail

DC2769A-A-KIT is a kit of the DC2771A-A transmitter board, featuring LTC6990, the DC2775A-A, featuring LTC4124, and the DC2774A application-sized receiver board featuring LTC4124. The DC2775A-A receiver can charge a single Li-Ion battery at up to 10mA with an air gap of 0.5mm between the transmit and receive coils. 
Tools & Simulations

Tools & Simulations 2

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

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