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MFG:LT Package Cooled:N/A D/C:04+
Part Number: LTC6905
MFG: LT
Package Cooled: N/A
D/C: 04+
Description: The LTC®6905 precision, programmable silicon oscillator is easy to use and occupies ver...
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LTC6905
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DataSheet
General Description
LTC6905 General Description
The LTC®6905 precision, programmable silicon oscillator is easy to use and occupies very little board space. It requires only a single resistor to set the output frequency from 17MHz to 170MHz with a typical frequency error of 0.5% or less.
The LTC6905 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. Operation is simple: A single resistor, RSET, between 10K to 25K is used to set the frequency, and an internal three-state divider (DIV input) allows for division of the master clock by 1, 2 or 4, providing three frequencies for each RSET value.
The LTC6905 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:
LTC6905 Maximum Ratings
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)
Output Short-Circuit Duration (Note 6) .......... Indefinite
Operating Temperature Range (Note 7)
LTC6905C, I ....................................... 40°C to 85°C
LTC6905H ........................................ 40°C to 125°C
Specified Temperature Range (Note 8)
LTC6905C .............................................. 0°C to 70°C
LTC6905I.............................................40°C to 85°C
LTC6905H .........................................40°C to 125°C
Storage Temperature Range .............. 65°C to 150°C
Lead Temperature (Soldering, 10 sec)............... 300°C
DIV to GND .................................... 0.3V to (V+ + 0.3V)
SET to GND ................................... 0.3V to (V+ + 0.3V)
Output Short-Circuit Duration (Note 6) .......... Indefinite
Operating Temperature Range (Note 7)
LTC6905C, I ....................................... 40°C to 85°C
LTC6905H ........................................ 40°C to 125°C
Specified Temperature Range (Note 8)
LTC6905C .............................................. 0°C to 70°C
LTC6905I.............................................40°C to 85°C
LTC6905H .........................................40°C to 125°C
Storage Temperature Range .............. 65°C to 150°C
Lead Temperature (Soldering, 10 sec)............... 300°C
LTC6905 Features
One External Resistor Sets the Frequency
Fast Start-Up Time: 100µs Typical
Frequency Range: 17MHz to 170MHz
Frequency Error ±0.5% Typ 17MHz to 170MHz (TA = 0°C to 70°C, Over All Settings)
±20ppm/°C Temperature Stability
Rise Time: 0.5ns, CL = 5pF
Timing Jitter: 50ps at 170MHz
50% ±2.5% Duty Cycle
6mA Typical Supply Current, fOSC = 100MHz
CMOS Output Drives 500Ω Load (VS = 3V)
Operates from a Single 2.7V to 5.5V Supply
Low Profile (1mm) ThinSOTTM Package
Fast Start-Up Time: 100µs Typical
Frequency Range: 17MHz to 170MHz
Frequency Error ±0.5% Typ 17MHz to 170MHz (TA = 0°C to 70°C, Over All Settings)
±20ppm/°C Temperature Stability
Rise Time: 0.5ns, CL = 5pF
Timing Jitter: 50ps at 170MHz
50% ±2.5% Duty Cycle
6mA Typical Supply Current, fOSC = 100MHz
CMOS Output Drives 500Ω Load (VS = 3V)
Operates from a Single 2.7V to 5.5V Supply
Low Profile (1mm) ThinSOTTM Package
LTC6905 Typical Application
High Frequency Precision Oscillator
High Speed Data Bus Clock
Fixed Crystal Oscillator Replacement
Ceramic Oscillator Replacement
High Speed Data Bus Clock
Fixed Crystal Oscillator Replacement
Ceramic Oscillator Replacement
LTC6905 Connection Diagram
LTC6905
PDF/DataSheet Download
- Datasheet: LTC6905
- File Size: 122247 KB
- Manufacturer: LINER [Linear Technology]
- Click here to Download
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