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LTC6900 Low Power, 1kHz to 20MHz Resistor Set SOT-23 Oscillator
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 10kΩ to 2MΩ 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)
Features:
One External Resistor Sets the Frequency
1kHz to 20MHz Frequency Range
500μA 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: 50μs to 1.5ms
100Ω CMOS Output Driver
Operates from a Single 2.7V to 5.5V Supply
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