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LTC6900

Features: One External Resistor Sets the Frequency1kHz to 20MHz Frequency Range500mA Typical Supply Current, VS = 3V, 3MHzFrequency Error 1.5% Max, 5kHz to 10MHz (TA = 25°C)Frequency Error 2% Max, 5kHz to 10MHz (TA = 0°C to 70°C)±40ppm/°C Temperature Stability0.04%/V Supply Stability50% ±1% Duty C...

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SeekIC No. : 004402684 Detail

LTC6900: Features: One External Resistor Sets the Frequency1kHz to 20MHz Frequency Range500mA Typical Supply Current, VS = 3V, 3MHzFrequency Error 1.5% Max, 5kHz to 10MHz (TA = 25°C)Frequency Error 2% Max, 5...

LTC6900 Data Sheet

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Part Number:
LTC6900
Supply Ability:
5000

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  • 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 20MHz Frequency Range
 500mA Typical Supply Current, VS = 3V, 3MHz
 Frequency Error 1.5% Max, 5kHz to 10MHz (TA = 25°C)
 Frequency Error 2% Max, 5kHz to 10MHz (TA = 0°C to 70°C)
 ±40ppm/°C Temperature Stability
 0.04%/V Supply Stability
 50% ±1% Duty Cycle 1kHz to 2MHz
 50% ±5% Duty Cycle 2MHz to 10MHz
 Fast Start-Up Time: 50ms to 1.5ms
 100 CMOS Output Driver
 Operates from a Single 2.7V to 5.5V Supply
 Low Profile (1mm) ThinSOTTM Package


Application

 Portable and Battery-Powered Equipment
 PDAs
Cell Phones
 Low Cost Precision Oscillator
 Charge Pump Driver
 Switching Power Supply Clock Reference
 Clocking Switched Capacitor Filters
 Fixed Crystal Oscillator Replacement
 Ceramic Oscillator Replacement


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)
Operating Temperature Range (Note 8)
   LTC6900C .......................................... 40°C to 85°C
   LTC6900I............................................ 40°C to 85°C
Storage Temperature Range .............. 65°C to 150°C
Lead Temperature (Soldering, 10 sec)............... 300°C


Description

The LTC®6900 is a precision, low power 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 LTC6900 has been designed for high accuracy operation (£1.5% frequency error) without the need for external trim components.

The LTC6900 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 10kW to 2MW to select a master oscillator frequency between 100kHz and 20MHz (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 20MHz (5V supply). The LTC6900 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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