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LTC1799

Features: ` One External Resistor Sets the Frequency` 1kHz to 30MHz Frequency Range` SOT-23 Miniature Package`Frequency Error 1.5% 5kHz to 20MHz (TA = 25)` Frequency Error 2% 5kHz to 20MHz (TA = 0 to 70)` ±40ppm/ Temperature Stability` 0.05%/V Supply Stability` 50% ±1% Duty Cycle 1kHz to 2MHz` 50%...

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SeekIC No. : 004401906 Detail

LTC1799: Features: ` One External Resistor Sets the Frequency` 1kHz to 30MHz Frequency Range` SOT-23 Miniature Package`Frequency Error 1.5% 5kHz to 20MHz (TA = 25)` Frequency Error 2% 5kHz to 20MHz (TA = 0 t...

LTC1799 Data Sheet

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Part Number:
LTC1799
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

 ` One External Resistor Sets the Frequency
 ` 1kHz to 30MHz Frequency Range
 ` SOT-23 Miniature Package
 `Frequency Error 1.5% 5kHz to 20MHz (TA = 25)
 ` Frequency Error 2% 5kHz to 20MHz (TA = 0 to 70)
 ` ±40ppm/ Temperature Stability
 ` 0.05%/V Supply Stability
 ` 50% ±1% Duty Cycle 1kHz to 2MHz
 ` 50% ±5% Duty Cycle 2MHz to 20MHz
 ` 1mA Typical Supply Current
 ` 100W CMOS Output Driver
 ` Operates from a Single 2.7V to 5.5V Supply


Application

· Low Cost Precision Oscillator
· Charge Pump Driver
· Switching Power Supply Clock Reference
· Clocking Switched Capacitor Filters
· Fixed Crystal Oscillator Replacement
· Ceramic Oscillator Replacement
· Small Footprint Replacement for Econ Oscillators


Pinout

Connection Diagram


Specifications

Supply Voltage (V+) to GND ...........................0.3V to 6V
DIV to GND ...................................... 0.3V to (V+ + 0.3V)
SET to GND ...................................... 0.3V to (V+ + 0.3V)
OUT to GND ..................................... 0.3V to (V+ + 0.3V)
Operating Temperature Range
    LTC1799C ................................................... 0 to 70
    LTC1799I................................................. 40to 85
Storage Temperature Range ................... 65 to 150
Lead Temperature (Soldering, 10 sec)..................... 300


Description

The LTC®1799 is a precision oscillator that is easy to use and occupies very little PC board space. The oscillator frequency is programmed by a single external resistor (RSET). The LTC1799 has been designed for high accuracy operation (1.5% frequency error) without the need for external trim components.

The LTC1799 operates with a single 2.7V to 5.5V power supply and provides a rail-to-rail, 50% duty cycle square wave output. The CMOS output driver ensures fast rise/fall times and rail-to-rail switching. The frequency-setting resistor can vary from 3.32k to 1M to select a master oscillator frequency between 100kHz and 30MHz (5V supply). The three-state DIV input determines whether the master clock is divided by 1, 10 or 100 before driving the output, providing three frequency ranges spanning 1kHz to 30MHz (5V supply). The LTC1799 features a proprietary feedback loop that linearizes the relationship between RSET and frequency, eliminating the need for tables to calculate frequency. The oscillator can be easily programmed using the simple formula outlined below:




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