Description

The LTC1799HS5#PBF 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). It has been designed for high accuracy operation (≤1.5% frequency error) without the need for external trim components.

Specifications and Features

• One External Resistor Sets the Frequency
• Fast Start-Up Time: <1ms
• 1kHz to 33MHz Frequency Range
• Frequency Error ≤1.5% 5kHz to 20MHz (TA = 25°C)
• Frequency Error ≤2% 5kHz to 20MHz (TA = 0°C to 70°C)
• ±40ppm/°C 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
• 100Ω CMOS Output Driver
• Operates from a Single 2.7V to 5.5V Supply
• Low Profile (1mm) SOT-23 (ThinSOT™ Package)

Application Scenarios

The LTC1799HS5#PBF is suitable for various applications, including:

• 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

Comparison

• Precision oscillation with high accuracy (≤1.5% frequency error)
• Easy to use and occupies very little PC board space
• No need for external trim components
• Wide frequency range of 1kHz to 33MHz
• Fast start-up time of <1ms
• Low profile design with a height of 1mm
• Operates from a single 2.7V to 5.5V supply

• Temperature stability of ±40ppm/°C
• Supply stability of 0.05%/V
• Not suitable for duty cycle requirements beyond 50% ±5% above 2MHz
• Requires a single external resistor to set the frequency
• Package type is SOT-23